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March 7th, 2024

Reloading Powder Shape Properties — What You Need to Know

Vihtavuori loading propellant reloading powder N133 N150 N140 N550 ball flake stick extruded perforated powders

POWDER GRAIN SHAPES — What You Need to Know

The shape of powder grains has a profound effect on the performance of the powder charge, as it concerns both pressure and velocity. There are multiple powder shapes including flake, ball, and extruded or “stick” (both solid and perforated).

So how does powder grain shape affect pressure and muzzle velocity?
In general, it can be said that powder that burns progressively achieves a desired muzzle velocity at lower maximum pressure than a powder that burns neutrally, not to mention a degressive powder. As grain size increases, the maximum pressure moves towards the muzzle, also increasing muzzle blast. Muzzle velocity and pressure can be adjusted by means of the amount of powder or loading density, i.e. the relationship between the powder mass and the volume available to it. As the loading density increases, maximum pressure grows.

All Vihtavuori reloading powders are of the cylindrical, single-perforated extruded stick type. The differences in burning rate between the powders depend on the size of the grain, the wall thickness of the cylinder, the surface coating and the composition. Cylindrical extruded powders can also have multi-perforated grains. The most common types are the 7- and 19-perforated varieties. A multi-perforated powder grain is naturally of a much larger size than one with a single perforation, and is typically used for large caliber ammunition.

Other types of powder grain shapes include sphere or ball, and flake. The ball grains are typically used in automatic firearms but also in rifles and handguns. The ball grain is less costly to produce, as it is not pressed into shape like cylindrical grains. Flake shaped grains are typically used in shotgun loadings.

Vihtavuori loading propellant reloading powder N133 N150 N140 N550 ball flake stick extruded perforated powders

Web thickness in gunpowder terminology means the minimum distance that the combustion zones can travel within the powder grain without encountering each other. In spherical powders, this distance is the diameter of the “ball”; in flake powder it is the thickness of the flake; and in multi-perforated extruded powders it is the minimum distance (i.e. wall thickness) between the perforations.

The burning rate of powder composed of grains without any perforations or surface treatment is related to the surface area of the grain available for burning at any given pressure level. The change in the surface area that is burning during combustion is described by a so-called form function. If the surface area increases, the form function does likewise and its behavior is termed progressive. If the form function decreases, its behavior is said to be degressive. If the flame area remains constant throughout the combustion process, we describe it as “neutral” behavior.

The cylindrical, perforated powders are progressive; the burning rate increases as the surface area increases, and the pressure builds up slower, increasing until it reaches its peak and then collapses. Flake and ball grains are degressive; the total powder surface area and pressure are at their peak at ignition, decreasing as the combustion progresses.

Learn More with FREE Vihtavuori Reloading APP »

Vihtavuori loading propellant reloading powder N133 N150 N140 N550 ball flake stick extruded perforated powders


This article originally appeared on the Vihtavuori Website.

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March 6th, 2024

Save up to 15% with Spring 2024 Brownells Discount Codes

Brownells discount code savings bargain

If you’ve been thinking about a big purchase at Brownells, here are some money-saving codes. Brownells is currently offering 10% Off a $150+ purchase, 15% Off Bullet purchases, 15% Off Select Optics, and $10 Off a $100 purchase. It’s simple to get these discounts — there are no buyers’ clubs to join, no forms to fill out. Just use the appropriate Discount Code during online check-out.

Listed below are the Codes to use. Simply use the appropriate Code for your purchase at Brownells.com. NOTE: Most of these codes have no listed expiration date, so Brownells could terminate them at any time. Accordingly, we recommend you do your shopping soon. Also if the highest value code no longer works, try a lesser value CODE.

Brownells discount code savings bargain

Coupon Code: BULLET15 — 15% off Bullets
Expiration date: Unknown

Coupon Code: OPTICS15 — 15% off Select Optics
Expiration date: Unknown

Coupon Code: TA10 — 10% off $150+
Expiration date: Unknown

Coupon Code: TTB10 — 10% off $150+
Expiration date: Unknown

Coupon Code: WLS10 — 10% off $150+
Expiration date: Unknown

Coupon Code: TRIGGERED — 10% off $150+
Expiration date: Unknown

Coupon Code: GIFT10 — $10 OFF $100
Expiration date: Unknown

Coupon Code: SMSAVE — $10 OFF $100
Expiration date: Unknown

NOTE: None of the above codes include FREE or Discounted Shipping. But check when you purchase to see if free (or discounted) shipping is offered for your particular item(s). Depending on the weight/size of the item, this might be a better deal than saving $10-$20.

Brownells discount code savings bargain

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March 5th, 2024

6.5 Creedmoor Load Data from Sierra Bullets and Starline Brass

Sierra Load Data 6.5 Creedmoor

Sierra Bullets has released extensive load data for the popular 6.5 Creedmoor cartridge. This medium-sized cartridge has become one of the most popular chamberings for tactical and PRS shooters. The 6.5 Creedmoor combines excellent accuracy, good mag-feeding, good barrel life, moderate recoil, and reasonable component cost. That’s why this cartridge has caught on quickly, and is now one of the most popular chamberings in factory rifles.

Sierra Load Data 6.5 CreedmoorDeveloped in 2007 by Dennis DeMille and Dave Emary, the 6.5 Creedmoor is a shortened and improved 30 TC cartridge case that was inspired by the .308 Winchester design. This short action design was created to maximize case capacity and a wide range of loading lengths, while still fitting in standard short action magazines. With the correct twist barrel, the versatile 6.5 Creedmoor can take advantage of the wide range of bullet weights available in 6.5 mm (i.e. .264 caliber). Reloaders should keep in mind that the 6.5 Creedmoor works best with medium to medium-slow powders such as H4350, Varget, Win 760, and RE-17. The light recoil and adaptability of the efficient 6.5 Creedmoor cartridge has already proven itself in high power, precision rifle series and benchrest competitions. Couple that with respectable barrel life and its intrinsic accuracy potential and you have a recipe for success which should insure its legacy for decades to come.

Sierra 6.5 Creedmoor Load Data Manual reloading .264

Here are three tables from the Sierra Bullets Reloading Manual (5th Edition). IMPORTANT — This is just a sample!! Sierra has load data for many other 6.5mm bullet types, including FB, Spitzer, SBT, HPBT, and Tipped MK from 85 grains to 142 grains. To view ALL 6.5 Creedmoor DATA, CLICK HERE.

Sierra Bullets 6.5 Creedmoor Load Data MatchKing Tactical
INDICATES MAXIMUM LOAD – USE CAUTION
LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED.

Sierra Bullets 6.5 Creedmoor Load Data MatchKing Tactical
INDICATES MAXIMUM LOAD – USE CAUTION
LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED.

Sierra Bullets 6.5 Creedmoor Load Data MatchKing Tactical
INDICATES MAXIMUM LOAD – USE CAUTION
LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED.

Two More Great 6.5 Creedmoor Reloading Resources

Want More 6.5 Creedmoor Load Info? View Starline’s 6.5 Creedmoor Guide by Gavin Gear:

starline 6.5 creedmoor cartridge guide gavin gear
Download full 6.5 Creedmoor Guide at StarlineBrass.com.

PRB 6mm Creedmoor and 6.5 Creedmoor Load Survey
The Precision Rifle Blog compiled Load Data from PRS Competitors, for both 6mm Creedmoor and 6.5 Creedmoor. This is a good place to start. PRB surveyed the match loads for “173 of the top-ranked precision rifle shooters in the country”. CLICK HERE.

PRB precision rifle blog pet loads what pros use 6.5 Creedmoor 6mm CM

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March 3rd, 2024

Precision Reloading for Pistols — Key Tips from the USAMU

USAMU Service Pistol Handgun Tip Advice Reloading

USAMU Service Pistol Handgun Tip Advice Reloading

The U.S. Army Marksmanship Unit (USAMU) fields pistol teams as well as rifle and shotgun competition squads. Consequently the USAMU’s Reloading Shop loads tens of thousands of pistol rounds every year. In this article, the USAMU’s handgun experts talk about reloading for handguns — with smart tips on how to achieve superior accuracy with 100% reliability. This article, which offers important insights on COAL, primers, crimps and more.

Precision Pistol Reloading — Recommended Methods

Optimize the Taper Crimp
One often-overlooked aspect of handloading highly-accurate pistol ammunition is the amount of crimp and its effect on accuracy. Different amounts of taper crimp are used with various handloads to obtain best accuracy. The amount is based on bullet weight, powder burn rate and charge, plus other factors. It is not unusual for our Shop to vary a load’s crimp in degrees of 0.001″ and re-test for finest accuracy.

USAMU Service Pistol Handgun Tip Advice ReloadingUse Consistent Brass
Brass is also important to pistol accuracy. While accurate ammunition can be loaded using brass of mixed parentage, that is not conducive to finest results, particularly at 50 yards. It is important for the serious competitor/handloader to use brass of the same headstamp and ideally one lot number, to maximize uniformity. Given the volumes of ammunition consumed by active pistol competitors, using inexpensive, mixed surplus brass for practice, particularly at the “short line” (25 yards), is understandable. However, for the “long line” (50 yards), purchasing and segregating a lot of high-quality brass to be used strictly for slow-fire is a wise idea.

Importance of Uniform COAL
Uniformity of the Case Overall Length (COAL) as it comes from the factory is also important to achieving utmost accuracy. More uniform case lengths (best measured after sizing) contribute to greater consistency of crimp, neck tension, ignition/burn of powder charge, and so on. Cartridge case-length consistency varies from lot to lot, as well as by maker. Some manufacturers are more consistent in this dimension than others. [Editor’s note: It is easy to trim pistol brass to uniform length. Doing this will make your taper crimps much more consistent.]

Primers and Powders — Comparison Test for Accuracy
Pay attention to primer brands, powder types and charges. Evaluating accuracy with a Ransom or other machine rest at 50 yards can quickly reveal the effect of changes made to handload recipes.

This animation showing 1911 Pistol operation has over 30 million YouTube views:

Bullet Selection — FMJ vs. JHP
Bullets are another vital issue. First, there is the question of FMJ vs. JHP. A friend of this writer spent decades making and accuracy-testing rifle and pistol bullets during QC for a major bullet manufacturer. In his experience, making highly-accurate FMJ bullets is much more difficult than making highly-accurate JHPs, in large part due to the way the jackets are formed. Small die changes could affect accuracy of FMJ lots dramatically.

The CMP now allows “safe, jacketed ammunition” in Excellence-in-Competition (EIC) Service Pistol matches, although wadcutter ammunition is prohibited. Thus, the option to use very accurate JHP designs simplifies the life of CMP Service Pistol shooters in pursuit of the Distinguished Pistol Shot badge.

Hopefully, these tips will be helpful to any pistol shooters interested in accurate handloads, not just “Bullseye” shooters. Small tweaks to one’s normal routine can pay big dividends in improved accuracy and make practice and competition more rewarding.

Stay safe, and good shooting!

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March 1st, 2024

Get FREE 2023 & 2024 VihtaVuori Load Guides with Powder Buy

vihtavuori powder free reloading manual midsouth

Need high-quality reloading powder for your rifle or pistol? Now is a great time to order VihtaVuori powder from Midsouth Shooters Supply. If you purchase in-stock VihtaVuori powders, you will receive, at no charge, TWO VihtaVurori print reloading manuals. That’s right you get both VihtaVuori 2023 & 2024 Reloading Guides for FREE while supplies last. This deal is limited to one set of two VV manuals per order.

vihtavuori powder free reloading manual midsouthReceive both 2023 & 2024 Reloading Guides for FREE with purchase of any In-Stock VihtaVuori Powders! Offer is valid on qualifying purchases while supplies last! Start Date: 2/14/2024 End Date: 12/31/2024

Learn About VihtaVuori Powders with Informative Videos

This video shows how VihtaVuori powders are produced. The video covers the multiple production phases and the sophisticated testing procedures.

VihtaVuori marked its 100th Anniversary in 2022. Today, VihtaVuori Powders is stronger than ever and is respected by serious competitive shooters, accuracy enthusiasts, and hunters. In this video, Team VihtaVuori shooter Ian Klemm shows how he loads with VihtaVuori powder. One of the best F-TR shooters on the planet, Ian is a 4-time F-class National Champion.

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February 29th, 2024

Reloading Tool Video Reviews — RCBS, Hornady, and LEE

Lee precison die lock ring spline clamp O-ring

Our friend Gavin Gear of UltimateReloader.com often gets to test the latest and greatest reloading tools before they hit the market. He does a good job showing the features of new products with informative videos. Today we present three interesting products that Gavin has reviewed. First off is the impressive new RCBS Rebel reloading press. Next is the versatile three-head Case Prep Trio machine from Hornady. Third, Gavin reviews new Die Lock Rings and Breech Lock Die Bushings from Lee Precision.

RCBS Rebel Single-Stage Reloading Press

RCBS Rebel Press primer ejection reloading

Most hand-loaders have used an RCBS Rock Chucker press at one time or another. Recently RCBS unveiled its new Rebel single-stage press. Like the Rock Chucker, the Rebel has a Cast Iron frame, but with a bigger base and taller arch (for a larger opening). The most important change is that this new Rebel press ejects primers out the bottom of the ram. This a big deal — just put a bin under the press to collect spent primers. However — take note — the Rebel has no on-press priming. You need to prime your cases separately. That’s not really a major issue, as we know the majority of our readers prime separately using hand or bench priming tools.

In this video Gavin loads ammo on the new the Rebel single-stage press and explains its notable features, including the primer ejection through the ram.

Currently Midsouth Shooters Supply is running a major RCBS Products Sale, with significant savings. The RCBS Rebel Press is now on sale for $219.99 at Midsouth, $30 off the regular price — a good deal for a press that can last a lifetime.

Hornady Lock-N-Load Case Prep Trio

RCBS Rebel Press primer ejection reloading

Hornady’s compact Case Prep Trio machine (item 050160) packs a lot of functionality in a small package. This triple-threat tool has a small footprint, yet it can perform three tasks as well as much more expensive, tower-style case prep units.

Gavin Gear does a nice job explaining the features of the Case Prep trio. Watch this video to see how it can help you perform chamfering, deburring, and pimer pocket uniforming tasks more efficiently.

With three active stations, you can chamfer, deburr and clean primer pockets without having to change tools. The Case Prep Trio ships with inside chamfer, outside chamfer, and deburr tools. You can also use the machine with other optional 8/32 threaded accessories such as primer pocket reamers and case neck brushes. We’ve used this machine and it works well. The only negative is that you will get metal shavings on your bench (unlike some of the larger case prep centers). We’ve seen some guys put a small pan under the power head — then you can just dump the shavings out of the pan.

Lee Die Lock Rings and Spline Drive Breech Lock Bushings

Lee precison die lock ring spline clamp O-ring
New basic lock ring in left hand. Older non-splined ring in right hand.

Lee precison die lock ring spline clamp O-ringIn this video Gavin Gear reviews three types of die accessories from LEE. These work for virtually all standard dies, not just LEE-brand reloading dies. The new LEE basic silver-finish die lock rings now feature splines for enhanced grip and compatibility with LEE’s new die lock ring wrench (photo right). They still boast a rubber 0-Ring that helps “float” the die for improved cartridge concentricity.

LEE’s latest Ultimate Die Lock Rings have two major improvements — a colorful anodized finish, and a split-ring design with a tensioning screw, that allows these rings to be clamped securely to your dies. Available as a set, this package includes three ultimate die lock rings, and a plastic die lock ring wrench.

Gavin also reviews Lee’s Spline Drive Breech Lock Bushings for use with presses fitted with LEE’s Breech Lock system. These new Breech Lock bushings allow rapid change-out of dies without modifying the setting. The colorful new bushings feature splines on top that work with the new Lee Lock ring wrench shown above. In addition, the Breech Lock Bushings have a clamp to preserve die depth setting.

Lee precison die lock ring spline clamp O-ring

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February 28th, 2024

Tumbler on Fire — Watch Out for Reloading Room Fire Risks

Electrical Fire Tumbler ExtinguisherA fire in the home is always to be feared. And a fire in your reloading room can be disastrous. Near your reloading bench you probably have flammable solvents, and maybe gunpowder. What would happen if an electrical fire started in your reloading room? Would you be alerted? Do you have a proper fire extinguisher at hand?

Here’s a true story from Forum Member Joe O. (aka “Joecob”) that provides a valuable safety lesson. After Joe started up his old tumbler, an internal connector worked loose, causing an arc which started a fire in his basement reloading area. Luckily Joe had a functioning smoke detector, and a fire extinguisher.

Very few of us would worry about fire when we plug in a tumbler or other AC-powered reloading tool. But there is always the possibility of a malfunction and a fire. Quick thinking (and a handy extinguisher) prevented serious damage to Joe’s reloading room and house — but things could have been worse (much worse), had Joe not responded quickly.

Fire in the Reloading RoomReport by Joecob
The day before ‘Sandy’ hit I was cleaning brass the way I always have. I set the vibratory tumbler on the back of my reloading bench in the basement. I loaded the media hopper with 40 fired empty brass cases (and walnut media), plugged the cord in, turned the tumbler on and went back upstairs to watch TV. I could hear the tumbler running in the background.

About half an hour later I heard the basement smoke alarm go off. I ran downstairs. Flames were licking from the melting plastic of the tumbler.

ABC fire extinguisherI grabbed the nearby ABC cannister extinguisher and squirted out the fire and soaked the charred bench areas with water. Good thing I had the extinguisher! And I was glad I religiously store powder and primers properly — away from the bench (and everything else).

What caused the fire? It looks like an internal AC connector finally vibrated loose enough to arc and ignite the plastic. WHEH! I had been using that thing for 25 years the same way without mishap. Guess I should have known to periodically check the guts of a thing that plugs in and vibrates for a living?

Today I went out and bought a new even bigger ‘Pro’ ABC extinguisher, plus a dual-detector smoke alarm, and an ultrasonic cleaner. That experience was scarier than the storm. I hope this true account might help someone else to avoid a bad experience.

Electrical Fire Tumbler ExtinguisherIn his account, Joe refers to an “ABC” cannister fire extinguisher. The “ABC” refers to the fire classification rating: Class A (trash, wood, and paper), Class B (liquids and gases), and Class C (energized electrical equipment) fires. There are many brands of ABC-rated extinguishers.

The rechargeable Kidde Pro 210 Fire Extinguisher (SKU 21005779) contains four pounds of a multipurpose monoammonium phosphate dry chemical extinguishing agent. It has a discharge time of 13 to 15 seconds, a discharge range of 10 to 15 feet, and an operating pressure of 100 PSI. The seamless aluminum cylinder measures 4.5 inches in diameter and 15.7 inches tall. The Kidde 210 has a 6-year limited warranty. This is now $45.40 on Amazon, 29% off the regular price.

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February 25th, 2024

Big Presses for Jumbo-Sized Cartridges Used in the ELR Game

Ko2m king two miles ELR .416 Barrett cheytac .50 BMG Extreme long range press

In the ELR game, particularly the King of 2 Miles (KO2M), it’s “go big or go home”. The top shooters run large-capacity cartridges that push large-caliber, ultra-high BC bullets at very high velocities. Bullets launched by cartridges such as the .416 Barrett can sustain supersonic velocities at Extreme Long Ranges — and that’s what it takes to win. The .416 Barrett can launch a 550-grain solid bullet at 3000+ FPS.

.416 Barrett cartridge ELR .50 BMG RCBS press
Photo from ELR Competitor Corbin Shell.

2018 and 2019 Kings of 2 Miles Loaded on RCBS Presses
So how do you load jumbo cartridges such as the .416 Barrett? It takes a big, heavy, super-strong reloading press. We’ve learned that two recent King of 2 Miles champions, Paul Phillips (2019) and Robert Brantley (2018) both loaded their KO2M ammo on RCBS AmmoMaster .50 BMG presses. Phillips loaded .416 Barrett ammo, while Brantley loaded a similar .416 MCS cartridge.

In 2018, Robert Brantley topped the field using his custom .416 MCS cartridge. Then in 2019, Paul Phillips won the K02M competition shooting a .416 Barrett, with Brantley a close second. Both Phillips and Brantley use the RCBS AmmoMaster .50 BMG single stage press kit and RCBS .416 Barrett dies to hand-load for extreme long-range. “My ammo has been much more consistent after switching to the RCBS press and dies,” remarked Phillips, who runs the Global Precision Group. Brantley said he uses RCBS products for most of his reloading needs — from the dies and AmmoMaster, to the ChargeMaster and Brass Boss. His custom .416 MCS loads launch a 550-grain bullet more than 3,100 fps.

Ko2m king two miles ELR .416 Barrett cheytac .50 BMG Extreme long range press

Loading with RCBS AmmoMaster .50 BMG Press
This video shows reloading with the RCBS AmmoMaster .50 BMG press. While this video shows .50 BMG cases being loaded, the principles are the same for loading the .416 Barrett cartridge or other big rounds. Big cases need big presses!

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February 20th, 2024

How to Load Straighter Ammo with Reduced Cartridge Run-out

USAMU Reloading TIR run-out concentricity seating die stem

The U.S. Army Marksmanship Unit published a series of reloading “how-to” articles on the USAMU Facebook page. A while back the USAMU’s reloading gurus looked at the subject of cartridge run-out and what can be done to produce straighter ammo. Tasked with producing thousands of rounds of ammo for team members, the USAMU’s reloading staff has developed smart methods for improving concentricity, even with budget-priced dies. For other hand-loading tips, visit the USAMU Facebook page.

Minimizing Runout with Standard Seating Dies

This USAMU article explains how to set up standard bullet seating dies dies to minimize Total Indicated Run-out (TIR). The loading process is described using a single-stage press since most handloaders have one. A high-quality run-out gauge is essential for obtaining consistent, accurate results.

Having sized, primed, and charged our brass, the next step is bullet seating. Many approaches are possible; one that works well follows. When setting up a standard seating die, insert a sized, trimmed case into the shellholder and fully raise the press ram. Next, back the seating stem out and screw the die down until the internal crimping shoulder touches the case mouth.

USAMU Reloading TIR run-out concentricity seating die stem

Back the die out ¼ turn from this setting to prevent cartridge crimping. Next, lower the press ram and remove the case. Place a piece of flat steel (or window glass, which is quite flat) on the shellholder and carefully raise the ram.

Place tension on the die bottom with the flat steel on the shellholder. This helps center the die in the press threads. Check this by gently moving the die until it is well-centered. Keeping light tension on the die via the press ram, secure the die lock ring. If one were using a match style, micrometer-type seating die, the next step would be simple: run a charged case with bullet on top into the die and screw the seating stem down to obtain correct cartridge OAL.

However, with standard dies, an additional step can be helpful. When the die has a loosely-threaded seating stem, set the correct seating depth but don’t tighten the stem’s lock nut. Leave a loaded cartridge fully raised into the die to center the seating stem in the die. Then, secure the stem’s lock nut. Next, load sample cartridges and check them to verify good concentricity.

One can also experiment with variations such as letting the seating stem float slightly in the die to self-center, while keeping correct OAL. The run-out gauge will show any effects of changes upon concentricity. However, this method has produced excellent, practical results as evidenced by the experiment cited previously. These results (TIR Study 2) will reproduced below for the reader’s convenience.

First, however, let’s examine run-out figures of some factory-loaded match ammunition. This should give readers who are new to TIR gauges some perspective about the TIR ranges one might encounter.

TIR Study 1: 50 rounds Lake City M852 Match 7.62mm
(168 gr. Sierra MatchKings)
0.000” – 0.001” = 2%
0.001” – 0.002” = 30%
0.002” – 0.003” = 16%
0.003” – 0.004” = 22%
0.004” – 0.005” = 14%
0.005” – 0.006” = 14%
0.006” – 0.007” = 0%
0.007” – 0.008” = 2%

TIR Study 2: 50 rounds of .308 match ammo loaded using carefully-adjusted standard dies, vs. 50 using expensive “Match” dies from the same maker.

Standard dies, TIR:
0.000” — 0.001” = 52%;
0.001”– 0.002” = 40%;
0.002”– 0.003” = 8%.
None greater than 0.003”.

Lesser-quality “Match” dies, TIR:
0.000”– 0.001” = 46%;
0.001” — 0.002” = 30%;
0.002” — 0.003” = 20%;
0.003” — 0.004” = 4%.

Note: both samples were loaded using the O-Ring method, i.e. with a rubber O-Ring placed under the locking ring of the Full-length sizing die to allow that die to float.

USAMU Hump Day Reloading TIR run-out concentricity seating die stem

These tips are intended to help shooters obtain the best results from inexpensive, standard loading dies. Especially when using cases previously fired in a concentric chamber, as was done above, top-quality match dies and brass can easily yield ammo with virtually *no* runout, given careful handloading.

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February 20th, 2024

High-Quality Cartridge Diagrams — Download for FREE

Winchester centerfire rimfire pistol shotshell ammo ammunition cartridge diagram illustration

Winchester’s new “Introduction to Ammunition — Ammo 101” is a four-part series including custom illustrations and information for four major ammunition categories: rifle, pistol, rimfire, and shotshell. The Ammo 101 series provides a detailed overview of centerfire rifle, centerfire pistol, rimfire, and shotshell ammunition, showcasing ammunition construction, components, calibers, and common usage. The Ammo 101 resource is free to download from Winchesters.mediaassets.com. Or, simply click one or more diagrams below. Each image will launch a large PDF which you can print or download.

TIP: Click Each Image for Full-Screen Printable PDF

Shown below are the first four ammunition information sheets prepared by Winchester. These show all the key components of cartridges and shotshells, and explain the functions. These diagrams are useful for training, and for persons getting started in reloading.

Ammo 101 Centerfire Rifle Cartridge Diagram (click for PDF)

Winchester centerfire ammo ammunition cartridge diagram illustration

Ammo 101 Rimfire Cartridge Diagram (click for printable PDF)

Winchester centerfire ammo ammunition cartridge diagram illustration

Ammo 101 Pistol Cartridge Diagram (click for printable PDF)

Winchester centerfire ammo ammunition cartridge diagram illustration

Ammo101 Shotshell Diagram (click for printable PDF)

Winchester centerfire ammo ammunition cartridge diagram illustration


CLICK HERE for ALL FOUR Diagrams in SINGLE LARGE PDF »

About the Ammo 101 Series
The FREE Ammo 101 resources can help instructors nationwide who introduce new entrants to the shooting sports and hunting. Instructors can incorporate these resources into their training presentations, use them as handouts, or have them printed locally.

“The basics of ammunition… is what we want to deliver with the Ammo 101 series,” said Matt Campbell, Winchester V.P. of Sales & Marketing. “With millions of people across the United States starting their journey in the shooting sports as new firearm owners, providing easy-to-understand information on ammunition types is one way we can help educate our customers.”

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February 20th, 2024

How To Deal With Pesky Flyers During Load Development

Sierra Bullets Reloading Flier Flyer load development groups

by Sierra Bullets Ballistic Technician Gary Prisendorf
Occasionally someone will ask, “Why did I get a flyer that didn’t go in with the rest of my group?” If I had an answer that would stop flyers from happening, I would be rich.

There are many reasons why this can happen. Everything from gripping a forearm differently to variations in the brass casing, the list goes on and on. Most of the time the flyer is usually shooter induced and sometimes what you may think is a flyer, is just part of your group. There are a lot of shooters, that go out and test a load and they may shoot a 3/8” group at 100 yards and think that load is good. But I have seen far too many times that you can shoot another group, same load, same rifle and the next time you may get a 1 ¼” group.

Sierra bullets load development flyer group measurement target

The total opposite can also occur. You may shoot a 1 ¼” group and turn around and follow it with a 1/2″ group without changing anything. If you only shot the one group, you might decide that load wasn’t any good and move on to something else without really knowing what that load was capable of.

To really determine how a particular load is performing we need to shoot multiple groups and take an average of the group sizes to really see what that rifle/load combination is really capable of.

I suggest shooting a minimum of three 5-shot groups and averaging the group sizes before deciding if the load is acceptable or not. Obviously the more rounds you shoot for a group and the more groups that you shoot, you will get a much better representation of what that particular combination can do.

Now I’m not saying to go out and shoot 30 groups with 50 rounds in each group to determine how well your load is shooting. That would be a bit pointless, in some cases it would be time to re-barrel your rifle before your load development was finished.

In most cases, I feel that three to five, 5-shot groups will give you a pretty good representation of how a load will perform in that specific firearm.

Sierra Bullets reloading advice tips information

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February 19th, 2024

BargainFinder 439: 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. CDNN Sports — Ruger American Gen II with Scope, $649.99

ruger gen II generation 2 american rifle cdnn sports free bushnell scope
Great deal on popular product

Ruger has released a Ruger American Rifle “Generation II” edition, featuring a spiral-fluted barrel and muzzle brake. As sold by CDNN Sports for $649.99, this rifle comes complete with a 4-12x40mm Bushnell hunting scope, 20″ fluted barrel, and gray stock. Many chamberings are offered: .223 Rem, 6.5 Creedmoor, 7mm-08, and .308 Winchester. In addition, for the same $649.99 price, there are versions with FDE tan stock and 16.1″ barrel offered in .223 Rem, 7.62×39, and 300 Blackout. All these Ruger American Gen II rifles come with 4-12x40mm Bushnell scope and rings, adjustable trigger, and Cerakote metal finish.

2. Natchez — Frankford Arsenal Sale, Up to 42% Off

frankford arsenal reloading essentials kit savings
Great Reloading Kit and save $20-$50 on Frankford Arsenal products

Natchez is running a major Frankford Arsenal Sale right now. If you’re getting started in reloading, the Frankford Arsenal Essential Reloading Kit is a great package for $349.99 ($60 off). This includes the outstanding F-1 Single Stage Press, along with Perfect Seat Hand Primer, Bench Top Powder Measure, Aluminum Powder Funnel Kit, Electronic Calipers, DS-750 Powder Scale, Powder Trickler, and Universal Reloading Tray. This very same Kit is $419.99 at MidwayUSA, $70 more! NOTE: You can also get the very good F-1 Reloading Press by itself for $114.99 at Natchez.

frankford arsenal natches sale

Other excellent Frankford Arsenal products on sale include: the Intellidropper Powder Dispenser ($50 Off), Quick-N-EZ Case Tumbler Kit ($20 off), and the Case Prep Center ($20 off).

3. Smith & Wesson, Wheelgun Wonderland Rebate, $50 or $75

smith wesson revolver wheelgun wonderland rebate J-frame k-frame l-frame n-frame S&W
Significant rebate on high-quality revolvers

We think every gun fan should have a Smith & Wesson revolver. Right now you can get a significant S&W Rebate on both compact carry revolvers and full-size wheelguns. For the smaller J-Frame (with $50 rebate), we like the Model 638 with alloy frame and shielded hammer. You can also get a big $75 rebate on the bigger K-, L-, or N-frame revolvers. In .357 Magnum, we like the modern L-Frame Model 686.

4. Powder Valley — Popular Alliant Powders IN STOCK

powder valley alliant reloader reloder 15 16 19 15.5 22 sale in stock
Grab these great Alliant powders before they sell out

Many of the most popular powders from Alliant and Hodgdon have been very hard to find over the last couple of seasons. Thankfully a huge new shipment of Alliant Powders has been received by Powder Valley. Order your favorite Alliant powders now. Among the many Alliant powders in stock now are: AR-Comp, Power Pro 2000-MR, Reloder 10X, Reloder 15, Reloder 16, Reloder 22, Power pistol and many more. Reloder 15 is a great choice for 6mmBR and 6BRA. With burn rate very similar to H4350, temp-stable Reloder 16 works well in the 6mm Creedmoor, 6XC, and 6GT cartridges while Power Pro 2000-MR works well in .308 Win rifles.

5. Palmetto SA — Rock Island Armory TM22 Rifle, $199.99

tm 22 rock island rimfire rifle .22 LR
Slick, AR-style rimfire rifle with new features

Looking to get started in NRL22 competition, or want a rimfire varmint rifle with familiar AR look and feel? Then check out the Rock Island Armory TM22. This handsome semi-auto .22 LR rimfire rig weighs 6.5 lbs. with its 18″ barrel. Now just $199.99 on sale, the TM22 sports an AR-type grip, commercial buffer tube adapter, top rail, and M-LOK fore-end. The rifle is set up with right-handed controls, but the TM22 can easily be modified for left-handed operation. The TM22 ships with two 10-rd aluminum magazines with aftermarket 15- and 25-round magazines available.

6. Sportsman’s Guide — CMMG AR Conversion Kit, $169.99

.22 LR 22LR rimfire AR AR15 AR-15 conversion kit bolt magazine savings ammo ammunition
Save money with rimfire ammo for AR cross-training

The CMMG Bravo .22 LR Conversion Kit provides a replacement bolt/bolt carrier along with three 25-round magazines with special .22 LR-fitted followers and ammo slots. This allows you to shoot rimfire ammo from any AR-15 chambered for the .223 Rem (5.56×45). The CMMG Bravo has an integrated extension that fits into your current chamber. The rimfire bullet passes through this extension and then enters the barrel. This conversion kit is now on sale for $169.99. To use, simply replace the rifle’s .223 Rem bolt and carrier with the Bravo .22 LR conversion unit and load up the included magazine(s) with rimfire ammo.

7. 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. That lets you talk to folks in the pits or at a different section of your shooting club. 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 $69.99, and the slimmer NRR 21 Razor Slim XTRM Muffs for $49.99, $20 off.

8. Natchez — .22 LR Ammo Five to Six Cents Per Round

natchez rimfire .22 LR ammunition ammo sale Aguila CCI Federal armscor blazer sale discount
Big savings on .22 LR ammo from Federal, CCI, Aguila and more

Right now, at Natchez, you can save big on .22 LR rimfire ammunition. Choose among many leading brands including Federal, CCI, SK, Winchester, Remington, and Aguila, with prices starting at just 5.5 cents per round ($27.49 for 500 rd box).

9. Amazon — ShootingTargets7 AR500 Steel Targets

target steel sale
Good selection of AR500 steel targets with durable zinc coating

Steel targets are great for fun shooting and tactical training. Right now Amazon offers a line of USA-made Zinc-plated, laser-cut AR500 Steel Targets (#ad) starting at just $7.97 for 3″ diameter gong. Choose from a variety of sizes ranging from 3″ to 16″ diameter and thicknesses 1/4″, 3/8″, or 1/2″. There’s also a 12″x23″ torso target. The Zinc plating on the steel helps prevent rust. The maker says the zinc “is far more durable than paint or powder coat.”

10. Amazon — Dual-Diameter Scope-Mounted Bubble Level

Scope Optic bubble level 30mm 1
Essential leveling accessory for 1″ and 30mm scopes — real bargain

Avoid bad rifle canting by using a bubble level fitted to rail or scope. One very affordable option is the Jialitte Scope Bubble Level (#ad). This features a 30mm diameter ring, plus an inner insert ring so it will also fit 1″-diameter main tubes. The Jialitte unit, just $10.99 on Amazon, is nicely radiused with a low profile. User reviews have been very positive. You could easily pay $35.00 or more for a 30mm scope level.

BONUS: FREE Shipping $99+ Orders with Creedmoor Sports

creedmoor sports free shipping sale sightron

Here’s a nice President’s Day special from Creedmoor Sports. Now through 12:00 pm CST on February 20, 2024 you can get FREE Ground Shipping on most products with an order over $99.00. Use Code PRES24. Creedmoor Sports is also running a big sale right now on Sightron Scopes.

As an Amazon affiliate, this site can earn revenues through sales commissions.

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