Eurooptic vortex burris nightforce sale




teslong borescope digital camera barrel monitor


As an Amazon Associate, this site earns a commission from Amazon sales.









March 29th, 2024

The .220 Swift — Great, Classic Varmint Cartridge

Sierra Bullets 220 .220 Swift Cartridge powder loading Hodgdon

A History of the .220 Swift Cartridge

by Sierra Bullets Ballistic Technician Paul Box
Sierra Bullets 220 .220 Swift Cartridge powder loading HodgdonThis cartridge was introduced by Winchester in 1935 in their model 54 rifle. A year later, it was added as a standard cartridge in the model 70. What might not be common knowledge to some reloaders is that the prototype for the Swift was developed in 1934-35 by Grosvenor Wotkyns by necking down the 250 Savage case, but in the end, Winchester chose the 6mm Lee Navy case for the foundation for this cartridge.

This cartridge was far ahead of its time and for that reason it received a lot of bad press. We’ve all read the horror stories through the years. Many of those stories were just simply repeated from previous articles even the wording was just slightly different. So how bad was the Swift? Let’s take a deeper look.

Some of the early Swifts had soft barrel steel and some of the rare ones even had barrels that were .223 in bore size. This stemmed from the fact that the .22 Hornets prior to the end of World War II were .223 in bore size and some of these barrels were chambered in the Swift. It was rumored that the Swift peaked in pressure far too quick. I’ll bet they did with a turkey extra full choke barrel.

Burn rates of powders were limited at that time as well, so the Swift was limited in its true ability due to that. It was almost like building a funny car for drag racing when only kerosene was available.

One of the longest lasting black eyes was that it shot barrels out so fast. If you get the barrel branding iron hot and fail to clean it often this can happen. Common sense will go a long ways here. Keep the barrel as cool as you can and properly clean it every fifteen rounds or less will go a long way to improving accuracy life of a Swift.

Sierra Bullets 220 .220 Swift Cartridge powder loading Hodgdon

So what is the real truth about this cartridge? I’m glad you ask. I’ve been shooting the .220 Swift for over 43 years now. It is one of the best varmint cartridges I’ve ever owned. It is not hard to load for, it doesn’t suddenly peak in pressure and it isn’t the barrel burner that you’ve heard. Hodgdon powders once reported a Remington 40-X with over 3,000 rounds of full power loads averaged .344” for five, 5-shot groups. My findings have been the same. It isn’t as hard on barrels as it has been made out to be.

I’ve also read that down loading it slightly will help in barrel life. This is true, but if you buy a thoroughbred you want him to run. Barrels are threaded on the end for a reason. If you have enough fun to shoot out a Swift barrel, just rebarrel it.

The bottom line is enjoy the .220 Swift for what it was meant to be. The popularity of the Swift has slipped in the last twenty years and few factory rifles are now available in this caliber. There is no reason for this and I know the Swift will always have a strong and loyal following.

Sierra Bullets 220 Swift Cartridge Guide

Permalink Bullets, Brass, Ammo, Hunting/Varminting, Tech Tip No Comments »
March 28th, 2024

Handy Case Neck Sorting Tool for Non-Neck-Turned Brass

Sinclair Case Neck Sorting tool reloading benchrest neck-turning

Case Neck thickness sorting gauge Sinclair accurateshooter.comHe who dies with the most toys wins — right? Well Sinclair has another interesting gadget you can add to your reloading bench. The Sinclair Case Neck Sorting Tool lets you quickly sort brass by neck-wall thickness. For those who shoot “no-turn” brass, this can improve neck-tension consistency. Large variances in neck-wall thickness can cause inconsistent neck “grip” on the bullet. Generally, we’ve found that more consistent neck tension will lower ES and (usually) improve accuracy. We know some guys who shoot no-turn 6mmBR brass in competition with considerable success — but their secret is pre-sorting their brass by neck-wall thickness. Cases that are out-of-spec are set aside for sighters (or are later skim-turned).

Watch Case Neck Sorting Tool Operation in Video

How the Case Neck Sorting Tool Works
Here’s how the Sinclair tool works. Cases are rotated under an indicator tip while they are supported on a case-neck pilot and a support pin through the flash hole. The unit has a nice, wide base and low profile so it is stable in use. The tool works for .22 through .45 caliber cases and can be used on .17- and .20-caliber cases with the optional carbide alignment rod. The MIC-4 pin fits both .060 (PPC size) and .080 (standard size) flash holes. Sinclair’s Case Neck Sorting Tool can be ordered with or without a dial indicator. The basic unit without dial indicator (item item 749006612) is priced at $59.99. You can also buy the tool complete with dial indicator (item 749007129) for $89.99. IMPORTANT: This sorting tool requires caliber-specific Case Neck Pilots which must be ordered separately.

Editor’s Comment: The purpose of this Sinclair tool is rapid, high-quantity sorting of cartridge brass to ascertain significant case-neck-wall thickness variations. Consider this a rapid culling/sorting tool. If you are turning your necks, you will still need a quality ball micrometer tool to measure neck-wall thickness (to .0005) before and after neck-turning operations.

Permalink Bullets, Brass, Ammo, Gear Review, Reloading No Comments »
March 25th, 2024

BargainFinder 444: AccurateShooter’s Deals of the Week

AccurateShooter Deals of the Week Weekly Bargain Finder Sale Discount Savings

At the request of our readers, we provide select “Deals of the Week”. Every Sunday afternoon or Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.

NOTE: All listed products are for sale to persons 18 years of age or older. No products are intended for use by minors.

1. ZEISS — FREE $1799 Binoculars with ZEISS LRP S5 Scopes

Zeiss conquest LRP S5 combo sale
Get 15X Binocs worth $1799 Free with LRP S5 Scope

Here’s a great optics deal. Purchase a ZEISS LRP S5 riflescope and get the ZEISS Conquest HD 15×56 binoculars for FREE — a $1799.99 value. Choose either of the two LRP S5 scope versions: 3-18x50mm and 5-25x56mm. Both are FFP with premium Schott glass and 34mm main tubes. These optics boast an impressive 40.7 MRAD or 140 MOA of total elevation with two reticle options, a ZF-MRi or ZF-MOAi. The Conquest HD 15×56 binocular comes with a ZEISS tripod adaptor. American Rifleman says this is a great offer: “With the purchase of an LRP S5, new owners can receive a free Conquest HD 15x56mm binocular. The riflescope is an excellent choice for PRS and NRL competitions or long-range hunting.”

2. Savage Axis II XP with 4-12X Scope, $429.99

savage axis II xp rifle hunting bushnell scope
Nice hunting rifle complete with Bushnell scope

Need a hunting rifle? Here’s a great deal on a Savage Axis II bolt-action rifle, complete with mounted Bushnell 4-12x40mm scope. This has a nice tan/brown stock plus a user-adjustable AccuTrigger. Total price, with scope, is just $429.99. Choose one of six (6) available chamberings: .223 Rem, 22-250, .243 Win, 6.5 Creedmoor, .308 Win, 350 Legend.

3. Midsouth — Blem Bullets Sale, Save 20-33%

savage axis II xp rifle hunting bushnell scope
Major savings on big-name bullets in many calibers

Need bullets for your varmint, hunting, or tactical rifle? Right now Midsouth has major-brand bullets on sale at huge discounts. Get 100 bullets for as little at $13.99! These bullets may have a small blemish or visual defect or weight inconsistencies. Some are simply “factory seconds”. With all these items you can save 22-33% off the regular price. NOTE: Along with the six featured blem bullet types shown above, there are over 50 other bullet types on sale including pistol and large rifle calibers.

4. MidwayUSA — Lyman Ultimate Reloading Combo Set, $569.99

lyman turret press gen 6 combo tool set sale $100 off
Save $100 on Lyman Combo with Turret Press and Gen 6 Powder Dispenser

This is a great kit if you load many different cartridge types, as the Lyman turret press holds 8 dies. This Lyman Ultimate Reloading System Kit includes ALL the following: 8-Station Turret Press, Electronic Powder Dispenser, Pro 1200 Turbo Tumbler, E-ZEE Prime Hand Priming Tool, Universal Trimmer, Magnum Inertia Bullet Puller, Case Prep Multi Tool, Steel Calipers, Bench wrench, Loading Block, Case Lue, and Lyman Reloading Handbook. You get all that for $569.99 — $100 off the regular price. This is a great Combo Deal — you could pay $240+ for this turret press alone

5. CDNN Sports — Winchester .22 LR Wildcat, $199.99 w/ Rebate

winchester 22LR rimfire .22 LR wildcat reflex optic bargain sale discount CDNN sports
Fun rimfire rifle complete with optic — good owner reviews

Here’s a fun semi-auto .22 LR rifle at a crazy low price — $224.99 complete with a mounted Red Dot Reflex optic. Plus with the Winchester Warm-Up Rebate you get $25 back, lowering your net cost to just $199.99. Offer valid for purchases through March 26, 2024. CLICK HERE to submit Winchester Rebate Form.

The Winchester Wildcat takes Ruger 10/22 mags, and has some great features, such as field-removable lower receiver, ambidextrous controls, integral Picatinny rail, and rear barrel access. It has a good trigger and shoots well. In many respects the Wildcat beats the Ruger 10/22 while costing a lot less. If you don’t need the optic, you can get a basic Wildcat for $199.99 with Strata camo stock or $174.99 after rebate.

6. EuroOptic — Trijicon Close-Out Scope Sale

trijicon closeout scope sale save 57%
Huge discounts on high-quality Trijicon scopes

While supplies last, save up to 57% on these Trijicon Tenmile and Credo closeout riflescopes! User review of these optics have been very positive. Choose the 3-9x40mm Trijicon Huron BDC Hunter for $349.99, the 6-24x50mm Tenmile FFP for $849.99 (great PRS/NRL optics), or the innovative 1-8x28mm Trijicon Credo EX (good for ARs) for $999.99 (over $900 off!).

7. Midsouth — 2000 Rounds Aguila .22 LR ammo, $119.99

.22 LR 22lr ammo aguila sale $3
Good reliable ammo for just six cents a round with FREE shipping

Here is one of the best deals on rimfire ammunition that we’ve seen in years. Right now at Midsouth, you can get 2000 rounds of Aguila .22 LR Super Extra HV ammo for just $119.99 with FREE Shipping. That works out to just $3.00 per box (6 cents per round). This would work great for pistol and rifle plinking.

8. MidwayUSA — Electronic Muffs with Walkie-Talkie, $59.99

walker razor headphones
Dual-function electronic muffs — great for range communications

Electronic earmuffs protect your hearing while allowing you to hear range commands. With these Walkie-Talkie muffs you also get 2-way communication capabilities. The Walker Razor Slim Low Profile Electronic Earmuffs (NRR 23dB) with Walkie Talkie allows you to communicate with other FRS radios. That lets you give range commands or talk with friends without the need for a second radio. If you don’t need the two-way functionality, MidwayUSA also has the NRR 26 Walker’s Alpha Power Electronic Muffs for $34.99 — a 50% savings off the regular price.

9. Creedmoor Sports — Spring Rifle Cleaning Tools & Supplies

creedmoor sports cleaning patches brush rod sale
Save on cleaning tools, solvents, patches, brushes and more

With the shooting season getting started, it’s time for “spring cleaning”. Creedmoor Sports has a variety of good products for firearms cleaning, including specialty items for ARs. Show above are six of the items we liked, but there are dozens of other tools including brushes, cleaning mats, cleaning rods holder, solvents and more. These and other cleaning tools and supplies can be found on the Creedmoor Sports Cleaning & Maintenance webpage.

10. Midsouth — Lyman Stick-on Target Dots, $3.79/pack

lyman targ-dot adhesive target pack sale orange
Great price on handy Hi-Viz adhesive target dots

Targ-Dots Instant Targets from Lyman work great and come in three sizes. For the same $3.79 price you can get a 100-ct pack of 1″ diameter targets, a 45-ct pack of 2″ targets, or a 25-ct pack of 3″ targets. These stick-on Targ-Dot hi-viz target circles have an adhesive for easy placement on your target backer. User reviews have been very positive.

Permalink Bullets, Brass, Ammo, Handguns, Hot Deals, Optics No Comments »
March 23rd, 2024

Primer Problems? Check Your Primer Seating Tool

Priming Tool APS CCI magnum Primers Lee RCBS Priming

From time to time, we all encounter a primer that doesn’t go off. It’s normal to attribute the problem to a bad primer. But sometimes there are other explanations. George S., one of our Forum members, experienced a couple failures to fire, but he learned that the issue was his priming TOOL, not his primers. Here’s what George told us. There’s a lesson to be learned:

“I had issues with CCI 450s when I had my first 6BR barreled. I had probably three or four out of 20 rounds that failed to fire. the primers were dented but didn’t fire. I called CCI since I had bought a case of them. The tech was decent enough but had the audacity to tell me I was not seating the primers all the way in the pocket. I proceeded to let him know I had been reloading longer than he had been alive and I knew how to seat a primer.

Turns out that I did and I didn’t! I was using the RCBS primer tool I had used for years and the primers felt just fine to me. I finally decided to check the tool and since I had a new one I took the seating pins out and measured them. The seating pin on the tool I had been using for years was shorter by a few thousandths! I then used the pin from the new primer tool and darned if the primers that didn’t seat down to the bottom of the cup.

I switched to a K&M primer tool for seating the CCI primers and have not had a problem since. It was the combination of harder cup and lack of proper seating. I did call the CCI tech back and apologized for being an idiot.”

Another Forum member witnessed a problem cause by misuse of a priming tool: “I did … see a failure to fire on a Rem 9 1/2 primer only a week ago. That was in the new Rem muzzleloader that uses a primed case to ignite the pellets. After watching the muzzleloader’s owner seat his primers, I believe that it was operator error not the primer. He was seating the primer and then squeezing the priming tool so hard that his hands hurt after a few. We got that corrected.”

Permalink Bullets, Brass, Ammo, Gear Review, Tech Tip No Comments »
March 22nd, 2024

Access Great Applied Ballistics Tech Articles for FREE

Want to improve your understanding of Ballistics, Bullet Design, Bullet Pointing, and other shooting-related tech topics? Well here’s a treasure trove of gun expertise. Applied Ballistics offers dozens of FREE tech articles on its website. Curious about Coriolis? — You’ll find answers. Want to understand the difference between G1 and G7 BC? — There’s an article about that.

“Doc” Beech, technical support specialist at Applied Ballistics says these articles can help shooters working with ballistics programs: “One of the biggest issues I have seen is the misunderstanding… about a bullet’s ballistic coefficient (BC) and what it really means. Several papers on ballistic coefficient are available for shooters to review on the website.”

Litz applied ballistics PDF articles

Credit Shooting Sports USA Editor John Parker for finding this great resource. John writes: “Our friends at Applied Ballistics have a real gold mine of articles on the science of accurate shooting on their website. This is a fantastic source for precision shooting information[.] Topics presented are wide-ranging — from ballistic coefficients to bullet analysis.”

READ All 35 Applied Ballistics Articles HERE »

Here are six (6) of our favorite Applied Ballistics articles, available for FREE to read online. There are dozens more, all available on the Applied Ballistics Education Webpage. After Clicking link, select Plus (+) Symbol for “White Papers”, then find the article(s) you want in the list. For each selection, then click “Download” in the right column. This will send a PDF version to your device.

Permalink - Articles, Bullets, Brass, Ammo, News, Tech Tip No Comments »
March 21st, 2024

17 Mach 2 — 2050 FPS Rimfire More Affordable Than 17 HMR

17 mach 2 .17 hm2 17HMR volquartsen summit

The 17 Mach 2 (aka “17 HM2″) is making a come-back. We’re glad. This high-velocity round fits actions and magazines designed for the .22 LR, so it’s an easy barrel-swap upgrade for most rimfire bolt-guns (semi-autos are more complicated). The 17 Mach 2 cartridge doesn’t deliver the velocity of the 17 HMR, but it is still way faster than a .22 LR. Expect 2000-2100 fps with 17 Mach 2 compared to 1250 fps for “High-Velocity” .22 LR ammo. And, importantly, 17 Mach 2 ammo is much less expensive than 17 HMR. If you shop around, you can get 50 rounds of 17 Mach 2 for about $8.50. That’s 43% cheaper than a better-than-average* $14.99 price of 17 HMR — a significant savings at 17 cents/round vs. 30 cents/round!

17 Mach 2 Major Selling Points:

1. 60% more velocity than typical “High-Velocity” .22 LR ammo.
2. 40% less cost than average 17 HMR ammo.
3. 17 Mach 2 OAL is compatible with .22 LR receivers and magazines.

17 Mach 2 — Best High Velocity Rimfire Bang for the Buck?

If you are looking for a capable, squirrel-busting round or a fun plinking round, you should definitely consider the 17 Mach 2, especially since CCI has committed to production of the little cartridge. CCI recently rolled out its “Gen 2″ 17 Mach 2 VNT Ammo with polymer tip (see top of article).

Considering that 17 HMR ammo is typically $15 to $17 per box, the 17 Mach 2 is a good value by comparison. It is available from vendors for about $8.50 per 50ct box. That’s $0.17 per round. When you consider overall “bang for the buck”, for many shooters, it makes sense to use the 17 Mach 2 rather than a 17 HMR. You save money, barrel life is a little longer, and the 17 Mach 2 is still a much more potent cartridge than the .22 LR. Check out this comparison, and note how the 17 Mach 2 has a much flatter trajectory than the .22 LR. For varmint shooting, the 17 Mach 2 is clearly the better choice.

And you can easily adapt a .22 LR Rifle to shoot the 17 Mach 2 just by changing the barrel. The magazine and bolt operation should work as the cartridge length, cartridge body diameter, and rim size is the same as the .22 LR.

17 Mach 2 hm2 .22 LR comparison
Hornady’s 17 Mach 2 has a 2100 FPS muzzle velocity vs. 1255 FPS for “High-Velocity” .22 LR.

17 Mach 2 Rifle Reviews

Gun-makers have taken notice of the availability of 17 Mach 2 ammo, introducing new models chambered for this versatile little rimfire round. For a high-volume, small-species varminting, the 17 Mach 2 is much more effective than the .22 LR, and much less expensive than the larger 17 HMR.

New Savage A17 in 17 Mach 2

There are a number of reviews on new-generation 17 Mach 2 rifles. Recently Varminter.com reviewed the Savage A17 in 17 HM2. Editor Eric Mayer wrote: “This new addition to the A17 line comes at a time when the 17 Mach 2 round is experiencing a resurgence, with ammo now available from CCI and Hornady, including the lead-free NTX round from Hornady. This means … you don’t have to break the bank to buy a current, functioning, semi-auto 17 Mach 2 and you don’t have to … convert your 10/22.”

17 mach 2 .17 hm2 savage a17 17 HMR varmint rimfire summit

Eric shot four different types of 17 Mach 2 ammo, putting 1000+ rounds through the Savage. He was impressed: “I am very excited that Savage Arms has chambered their A17 rifle in the 17 Mach 2 / 17 HM2 round. After shooting the prototype, I can confidently say that this new A17 will become my go-to 17 Mach 2 rifle. This new rifle is a great option for varminters everywhere!”

Toggle Bolt Volquartsen Summit in 17 HM2

It’s rare for us to see a new rimfire that we’d really like to own, but the new Summit from Volquartsen fits the bill. This versatile rifle features a cool, straight-pull toggle bolt, similar to those on elite Biathlon rifles. You can see how this gun shoots in this informative 22 Plinkster video:

22 Plinkster Tests Volquartsen Summit Rifle in 17 Mach 2

The 17 Mach 2 (17 HM2) is making a comeback. Now leading manufacturers are offering this efficient little rimfire cartridge in some nice rifles. Both Anschutz and Volquartsen will offer new 17 Mach 2 rifles in 2019. The Volquartsen Summit features a lightweight, carbon fiber-wrapped barrel threaded 1/2-28 for brakes or suppressors. The Summit boasts a nice 1.75-lb trigger pull. The Summit’s CNC-machined receiver features a +20 MOA Rail. NOTE: The video shows a silhouette-style laminated wood stock. However, the Summit comes standard with a composite Magpul stock that actually works better for shooting from a bench.

17 mach 2 .17 hm2 volquartsen summit

*Note: The cheapest 17 HMR we found via nationwide search was $12.50/box, but MidwayUSA charges $19.99 for 50 rounds of most 17 HMR types. At most vendors you’ll pay $16-$18 per box for 17 HMR ammo.

Permalink Bullets, Brass, Ammo, Hunting/Varminting, Tech Tip 2 Comments »
March 20th, 2024

Spring 2024 Factory Rebates — Save on Guns, Ammo, and More

summer Factory rebate programs

We’ve found ten great discount/rebate programs. These specials can save you big bucks on pistols, shotguns, ammo, or bullets. Some of these rebates are worth $100 or more. For example you can Save $75 on a new S&W revolver, save $100 on a new Beretta pistol, or save $200 on a new Shotgun. Note: most of these promos are good through the end of May or June 2024, but some expire on March 31st — so check the dates.

fn pistol rebate beretta pistol rebate $100
winchester rifles rebate browning rifle rebate discount
beretta shotgun 12 gauge rebate winchester shotgun shell ammunition rebate
smith wesson wheelgun rebate walther pistol free gun safe rebate
hornady ammo rebate trail cam rebate
Permalink Bullets, Brass, Ammo, Handguns, Hot Deals No Comments »
March 19th, 2024

.22 Creedmoor LOAD DATA and INFO from Peterson Cartridge

Peterson Cartridge Company 22 .22 Creedmoor wildcat cartridge load data recipe powder

Peterson Cartridge Company (“Peterson”) has released a lengthy, authoritative guide to the 22 Creedmoor cartridge, a popular wildcat based on the 6.5 Creedmoor or 6mm Creedmoor necked down to .224 caliber. We think the .22 Creedmoor would be a great long-range varmint cartridge, similar to the .22-250 Rem, but with a more modern, efficient cartridge design. In addition, some PRS/NRL competitors may turn to the .22 Creedmoor because it has less recoil and is flatter-shooting than the 6mm Creedmoor. In addition, .224-caliber match bullets are typically less expensive than heavier 6mm and 6.5mm projectiles. Less recoil, and less cost — what’s not to like?*

DOWNLOAD Peterson .22 Creedmoor Load Data Article PDF »

Along with load data, this article has specific sections dedicated to: Primers, Rifling Twist Rates, and Reloading Supplies. If you are considering building a .22 Creedmoor, we recommend you download the full Peterson .22 Creedmoor article, which is available in PDF format.

Peterson Cartridge Company 22 .22 Creedmoor wildcat cartridge load data recipe powder

Peterson states, “Since its inception in 2007… the 6.5 Creedmoor has seen some pretty meteoric growth in popularity. That growth continues as of this writing, as the cartridge has now gone mainstream with hunters and shooters alike. As the popularity of the 6.5 Creedmoor has increased, so has the number of wildcat cartridges based off of it. Some of those popular wildcat cartridges are the 6mm Creedmoor, the .25 Creedmoor, and now the .22 Creedmoor. This data sheet will cover the .22 Creedmoor.

To help our customers, and anyone else who shoots .22 Creedmoor, we decided to create this Data Sheet and distribute it. [In this LOAD DATA Document] you will find four (4) common bullets, and four (4) common rifle powders used when handloading the .22 Creedmoor cartridge. We then took the different bullet and powder combinations and loaded them up to the SAAMI Maximum Average Pressure (MAP) for the 6.5 Creedmoor and 6mm Creedmoor cartridges, which is 62,000 PSI. [O]ur goal was to provide a wide spectrum of bullet weights and the powders used with them.

All of the following data was gathered by our ballistician in our indoor ballistics lab located in our factory in Pennsylvania. Although we were able to gather pressure and velocity data in our lab, we have NOT tested these loads for accuracy. Again, these loads are just designed to give shooters information regarding what velocity, a given bullet and powder charge combination, will produce the SAAMI Maximum Average Pressure (MAP) of 62,000 psi.”

Sample 22 Creedmoor LOAD DATA

Peterson Cartridge Company 22 .22 Creedmoor wildcat cartridge load data recipe powder

IMPORTANT — Pressures can vary significantly with different Cartridge Overall Lengths (COAL). In addition, ANY change to ANY load components — primers, bullets, brass, powder — can affect pressure. Always load conservatively. In addition, because of variances in bore dimensions, some barrels may show higher pressures than others. Again, always start with conservative loads, well below MAX pressures.


*Actually there IS a potential downside — reduced barrel life. We expect that a .22 Creedmoor running hot varmint loads would experience shorter useful barrel life compared to a 6.5 Creedmoor. This is based on what we’ve observed with .22-250 and .22-250 Ackley barrels compared to our 6.5 CM barrels.

Permalink - Articles, Bullets, Brass, Ammo, Gear Review, Reloading 1 Comment »
March 19th, 2024

Bullet Ballistics Measured with Doppler Radar by Barnes

Ballistics Barnes Bullets Doppler Radar G1 G7 curve model drop chart DOF 6 degree of freedom

As does Lapua and some other leading bullet-makers, Barnes now uses radar to determine bullet BC values and ballistic data for its match bullets and ammunition. Barnes employs advanced Doppler Radar to record bullet speeds at multiple distances out to 1500 yards.

The Doppler radar system gathers thousands of data points as a bullet flies downrange. This radar data is used to generate a bullet specific drag curve, and then fed into a modern 6 Degree of Freedom (DOF) [ballistics software program] to generate precise firing solutions.

Determining Bullet Ballistics with Doppler Radar Data

How do you build better (more precise) ammo drop tables? With radar, that’s how. Barnes Bullets is using Doppler Radar to develop the drop tables for its Precision Match line of factory ammunition. The Doppler radar allows Barnes to determine actual velocities at hundreds of points along a bullet’s flight path. This provides a more complete view of the ballistics “behavior” of the bullet, particularly at long range. Using Doppler radar, Barnes has learned that neither the G1 nor G7 BC models are perfect. Barnes essentially builds a custom drag curve for each bullet using Doppler radar findings.

Ballistics Barnes Bullets Doppler Radar G1 G7 curve model drop chart DOF 6 degree of freedom

Use of Doppler Radar to Generate Trajectory Solutions

by Barnes Bullets, LLC
Typical trajectory tables are generated by measuring only two values: muzzle velocity, and either time-of-flight to a downrange target, or a second downrange velocity. Depending on the test facility where this data is gathered, that downrange target or chronograph may only be 100 to 300 yards from the muzzle. These values are used to calculate the Ballistic Coefficient (BC value) of the bullet, and the BC value is then referenced to a standardized drag curve such as G1 or G7 to generate the trajectory table.

Ballistics Barnes Bullets Doppler Radar G1 G7 curve model drop chart DOF 6 degree of freedomThis approach works reasonably well for the distances encountered in most hunting and target shooting conditions, but breaks down rapidly for long range work. It’s really an archaic approach based on artillery firings conducted in the late 1800s and computational techniques developed before the advent of modern computers.

There is a better approach which has been utilized by modern militaries around the world for many years to generate very precise firing solutions. Due to the sizeable investment required, it has been slow to make its way into the commercial market. This modern approach is to use a Doppler radar system to gather thousands of data points as a bullet flies downrange. This radar data is used to generate a bullet specific drag curve, and then fed into a modern 6 Degree of Freedom (DOF) [ballistics software program] to generate precise firing solutions and greatly increase first-round hit probability. (The 6 DOF software accounts for x, y, and z position along with the bullet’s pitch, yaw, and roll rates.)

Bullet-Specific Drag Curves Derived from Radar Data
Barnes’ advanced Doppler radar system can track bullets out to 1500 meters, recording the velocity and time of flight of that bullet every few feet along the flight path. The noteworthy graph below shows a Doppler Radar-derived, bullet-specific drag curve alongside the more common G1 and G7 curves:

Ballistics Barnes Bullets Doppler Radar G1 G7 curve model drop chart DOF 6 degree of freedom

Neither of the standard curves is a particularly good match to our test bullet. In the legacy approach to generating a downrange trajectory table, the BC value is in effect a multiplier or a fudge factor that’s used to shift the drag curve of the test bullet to try and approximate one of the standard curves. This leads to heated arguments as to which of the standardized drag curves is a better fit, or if multiple BC values should be used to better approximate the standard curve (e.g., use one BC value when the velocity is between Mach 1 and Mach 2, and a different BC value when the velocity is between Mach 2 and Mach 3.) Barnes’ approach to creating trajectory tables is to generate bullet-specific drag curves, and use that data directly in a modern, state-of-the-art, 6 DOF ballistics program called Prodas to generate the firing solution.

Story tip from EdLongrange. We welcome reader submissions.
Permalink - Articles, Bullets, Brass, Ammo, Tech Tip No Comments »
March 18th, 2024

BargainFinder 443: AccurateShooter’s Deals of the Week

AccurateShooter Deals of the Week Weekly Bargain Finder Sale Discount Savings

At the request of our readers, we provide select “Deals of the Week”. Every Sunday afternoon or Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.

NOTE: All listed products are for sale to persons 18 years of age or older. No products are intended for use by minors.

1. Graf & Sons — Sightron Scope Sale — Save 20-22%

scope sale
Big savings on Sightron Scopes for competition and hunting

Graf’s is running a major Sightron Scope Sale this month with 20-22% savings on many excellent optics. Get a 10-50x60mm SIII for $1179.99 or the amazing 5-40×56 SVIII ED for $2579.99, a $649.00 savings! Hunters can get the rugged 4-12x40mm S1 AO Scope for just $249.99 (20% off), and AR shooters will like the compact 1-6x24mm STAC AR1 scope for $399.99 (20% off). Note: Grab these bargains soon as sale inventory is limited.

2. Natchez — Frankford Arsenal SALE, up to 27% Off

frankford arsenal sale
Great prices on reloading kits, powder dispensers, tumblers and more

Frankford Arsenal makes some very effective and affordable products. Right now Frankford Arsenal products are on sale up to 27% off at Natchez. We recommend the Frankford Arsenal Essentials Reloading Kit ($299.99, $110 off), which has the excellent F-1 press, manual powder dispenser, priming tool, compact scale and more. We also recommend the Intelli-Dropper Powder Dispenser ($169.99, $60 off), the Case Prep Center ($114.99), and the Platinum Rotary Tumbler System ($149.99).

3. Midsouth — Hornady L-N-L Classis Reloading Kit, $389.99

hornady class reloading kit midsouth sale
Major $170 savings plus free Sonic Cleaner and 500 free bulleta

Right now Midsouth is offering Hornady’s L-N-L Classic Single Stage Press Reloading Kit for $389.99, a $170.00 discount. This Kit includes a nice press, manual powder dispenser, electronic scale, priming tool, powder trickler, chamfer/debur tool, case lube, shell block and more. As a special promo, this week Midsouth is including a FREE Sonic Cleaner, a $159.99 value. Plus, as an added bonus Hornady will provide 500 FREE Bullets with Kit purchase.

4. Creedmoor Sports — Starline Rifle Brass IN STOCK on SALE

starline brass sale
Good American-made cartridge brass at attractive prices

Starline Brass is quality, American-made cartridge brass that offers good consistency and useful life at a much lower price than some other leading brands. If you shoot PRS/NRL matches or run a varmint rifle, Starline may meet your expectations. At Creedmoor Sports you can save on popular cartridge types such as 6mm Creedmoor — now $69.95 for 100 cases. You could pay $120 or more for other brands of brass.

5. Amazon — Pegboard Wall Organizer, $119.79

pegboard wall board sale
Very effective wall-mounted tool and parts storage solution

Here’s a great option for your reloading room or garage. There’s only so much space on the bench to store tools so why not take advantage of your wall space? The well-designed Ultrawall Pegboard Wall Organizer provides 48″ x 36″ of pegboard complete with buckets, hooks, and more ensuring that your tools and parts are organized, yet easy to access.

6. Amazon — RCBS Universal Priming Tool, $64.99

rcbs primer sale
Recommended tool that adapts to multiple case rim sizes

The RCBS Universal Hand Primer tool can handle both large rim and small rim cases without any parts change. Leverage is good and the primer feeding tray is very reliable. This is a recommended tool for both beginning handloaders and expert-level reloaders. Another good feature of this tool is a patented safety gate that isolates the primer seating operation from the primer supply, lowering risk of tray detonation.

7. Amazon — 54″ Bulldog Rifle Case, $92.45`

bulldog rifle case
Popular case for long-barreled F-Class, Palma, and Long Range rifles

Most rifle cases won’t fit long-barreled competition rifles. This oversize, 54″-long Bulldog 54″ Rifle Case does have the ability to hold long Palma, Benchrest, F-Class, and ELR rigs. This case has a tough 600 denier water-resistant outer shell with lockable zippers and handy large pockets for tools, ammo, and accessories (yes a Garmin GPS will fit in the outside pocket). Inside the case is a plush, heat-resistant quilted inner lining with adjustable Velcro tie downs.

8. Bullet Central — ThorroClean 20% OFF

Thorroclean sale
Tests show this new cleaning product is very effective

Bullet Central has the advanced, new ThorroClean Bore Cleaning System. This cutting-edge cleaning product, developed in partnership with Iosso, is designed to provide shooters with a quick and thorough cleaning solution for their rifle bores. ThorroClean is engineered to completely eliminate copper and carbon fouling with no wear to the bore. NOTE: For a limited time you can get 20% OFF all ThorroCLean products at Bullet Central with code CLEAN20.

9. Amazon — BOG Switcheroo Tripod, $109.54

scope bipod sale
Multi-purpose lightweight tripod for rifles and optics

This BOG Adrenaline Switcheroo Tripod is a great choice as a rifle shooting support AND an optics platform. It can support your PRS rifle, and then adapt to support binoculars or spotting scope. Engineered for portability, this tripod can be used in the sitting, kneeling, and standing positions. The head rotates 360 degrees and has a handy v-shaped support. There is also a plain black BOG Switcheroo tripod version with the same features for just $88.04 on Amazon.

10. Amazon — BESTNULE Punch Kit, $29.99

punch tool kit
Bargain price on very complete punch set for common pin sizes

All gun owners can use a quality set of precision punches for assembly and disassembly tasks. The impressive BESTNULE Punch Kit features 18 punches (both metal and plastic), plus hammer (with detachable head), bench block, and other components — all for just $29.99 at Amazon. The tools fit in a handy plastic carry case that holds hammer and pins securely.

Permalink Bullets, Brass, Ammo, Gear Review, Gunsmithing, Hot Deals, Optics No Comments »
March 16th, 2024

Applied Ballistics — Rimfire Video, Fill Ratios, and 25% Off Sale

bryand litz science accuracy applied ballistics video

The Applied Ballistics Facebook Page features great, interesting new content posted multiple times each week. This resource features videos, test results, accuracy tips, and samples from Bryan Litz’s excellent books on ballistics and the three volume series on Modern Advancements in Long Range Shooting. Here are some highlights from Applied Ballistics’ Facebook posts from the past two weeks. Plus there’s a discount code, READ2024, that can save you 25% on Applied Ballistics books purchased in the month of March.

.22 LR Super Slow Motion Video — Watch the Bullet!

Watch .22 LR Rimfire Projectile Exiting Rifle Muzzle
This video, filmed with an ultra-high-speed camera, shows the milliseconds in time as a .22-caliber bullet travels the first 11 inches after leaving a .22 LR rifle barrel. Applied Ballistics states: “Notice that the bullet is fully obturated to the internal bore dimension — the step/rebate that exists on the unfired bullet where it meets the case gets expanded (obturated) and doesn’t exist on the fired bullet.”

How Important is Case Fill Ratio — You May Be Surprised

Conventional reloading practice is to select a powder that gives you a good case fill, meaning 90%-100% fill ratio for the cartridge and bullet you’re using. But why?

bryand litz science accuracy applied ballistics videoSome say that a higher fill ratio is good because it prevents the powder from settling differently in the case (which could lead to inconsistent ignition and greater MV SD). This explanation sounds good, and went unchallenged for a long time. However, Applied Ballistics has done some interesting testing that sheds new light on the density issue.

Modern Advancements in Long Range Shooting – Vol. 2 contains the results of Applied Ballistics tests of five different cartridge types — .223 Rem to .338 Lapua — loaded with different powders to produce fill ratios of 80%, 90%, and 100%. The testers wanted to see if 100% fill ratios actually gave better results (lower MV SDs) than the lower fill ratios.

Results of testing 3 different loads in 5 different cartridges — The highest MV SD was in fact measured in an 80% fill ratio load. However, the lowest MV SD was also measured for a different 80% load! Seems like the more we learn, the more questions we have. An informative Applied Ballistics podcast covers the Fill Ratio test. Visit Thescienceofaccuracy.com to access this and interesting podcasts.

EDITOR’s NOTE: There were multiple comments from Facebook readers stating that fill ratios 90% and above worked more consistently for them. And the reloading manuals warn against very low fill ratios.

Get 25% Off Applied Ballistics Books in March 2024

Applied Ballistics, through its Science of Accuracy webstore, is currently offering big savings on its popular books — considered to be the best print resources about rifle accuracy/ballistics ever published. This month you can save 25% on all six Applied Ballistics book titles by respected expert (and past national champion) Bryan Litz. Use Code READ2024 to get 25% of one or more of these books.

applied ballistics bryan litz book sale discount code read2024

Get 25% OFF Applied Ballistics Books! Use code: READ2024 at checkout.

applied ballistics bryan litz book sale discount code read2024

Permalink - Articles, - Videos, Bullets, Brass, Ammo, Tech Tip No Comments »
March 14th, 2024

CMP Will Offer Surplus Ammo at Matches Nationwide

CMP Civilian marksmanship programs surplus military ammunition M2 Ball M1 Carbine .30 Caliber .22 LR

CMP Acquires Surplus Ammunition with Upcoming Sales at Matches
In early 2023, the Civilian Marksmanship Program (CMP) announced the acquisition of vast quantities of surplus ammunition. Over the past year, this surplus ammunition was available to CMP customers, and available to competitors during our matches.

The CMP intends on maintaining a surplus ammo inventory large enough to support CMP Matches for the next several years and to provide discounted surplus ammo to competitors attending CMP events. All sales will include set limits to remain in compliance with guidelines specified in the Memorandum of Agreement between the Department of the Army and the CMP. The CMP’s current ammunition available for purchase may be viewed on the CMP eStore.

“CMP continues to fulfill its vision to lead the nation in marksmanship excellence providing safe, high quality, and innovative programs with a focus on youth”, said Christie Sewell, CMP’s Chief Programs Officer. “CMP continues to set purchase limits and restrictions to ensure that our competitors will have access to the surplus ammunition.”

CMP Civilian marksmanship programs surplus military ammunition M2 Ball M1 Carbine .30 Caliber .22 LR


NOTE: This video shows an M1 Garand shooting modern CMP M2 Ball ammo NOT older surplus. The surplus M2 Ball ammo obtained by the CMP is older, but should have similar velocities with 150gr bullets.

CMP Civilian marksmanship programs surplus military ammunition M2 Ball M1 Carbine .30 Caliber .22 LR

Commercial and surplus ammunition sales are currently available on the CMP E-Store to qualified individuals. Register for an account or browse the CMP E-Store at https://shop.thecmp.org/browse/Ammo.

CMP Civilian marksmanship programs surplus military ammunition M2 Ball M1 Carbine .30 Caliber .22 LR

Permalink Bullets, Brass, Ammo, Hot Deals No Comments »