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May 1st, 2017
At the request of our readers, we provide select “Deals of the Week”. Every Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, 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.
1. Monmouth Reloading — Nosler RDF Bullets, $28-$29 per 100
Nosler’s line of RDF (Reduced Drag Factor) bullets have very high BCs for their weight. Precision shooters are reporting outstanding accuracy. Given their high performance and consistency, RDF bullets represent a superior value. At Monmouth Reloading you can get Nosler RDFs for under $29 per 100 for popular 6mm, 6.5 mm, and .30-Cal sizes. That’s up to $20 less per box than some premium brands. Based on user reports, we recommend you start with these pretty far out from the lands. One shooter using the 6.5 mm 140-grainer reports: “This bullet likes to jump. Berger Hybrids liked a jump of about 0.010″ – 0.020″. Once I seated the RDFs to jump 0.045″, my groups shrank to about 0.3 MOA. You cannot beat the price or performance of this bullet!”
2. Amazon.com — Rock Chucker Supreme Reloading Kit, $279.99
Everything you see above can be yours for just $229.99, after manufacturer’s rebate. Right now, Amazon is selling the Rock Chucker Supreme Master Reloading Kit for $279.99. That’s a great deal considering all the hardware you get. Heck, the Rock Chucker press alone is worth $150.00+. But here’s the real incentive — this Rock Chucker Supreme Kit qualifies for a Buck$ or Bullets Rebate — choose either $50 or 500 Speer bullets. If you take the fifty bucks ($50), that reduces your net cost to just $229.00 for the entire RCBS Reloading Kit. That’s a total steal. NOTE: Cabelas.com also sells this RCBS Kit for the same $279.99 (before rebate).
3. Amazon — Neiko Digital Calipers, $16.45
Even if you have a good set of calipers, you may want to get one of these Neiko 01407A Digital Calipers. The #1 best-selling digital caliper on Amazon.com, this Neiko tool features a large LCD Screen and measures up to 6.0 inches. With over 2700 customer reviews, this product has earned an overall rating of 4.4 out of 5 stars. It’s hard to go wrong for $16.45, even if you just use these as a spare set for measuring group sizes and case trim lengths. These are inexpensive but will do the job for basic tasks.
4. Natchez — Surplus SKB 5041 Transport Cases, $129.99
Natchez has obtained a supply of British MOD Surplus SKB 5041 rifle cases. These were ordered as mine detector cases, but were never issued. Natchez has removed the foam cut for the detectors and replaced it with new 2-piece convoluted foam. Interior dimension of the case is 50″x14.5″x5″ so this will hold long-barrel match rifles comfortably. These are extremely high-quality cases, very tough and rugged, waterproof with gaskets. These cases feature four SKB patented trigger latches, four reinforced padlock locations, and inline wheels. Though in excellent condition, some case may have minor exterior scuffs. You won’t find a better case at anywhere near the price. These normally retail for $299.99.
5. Amazon — Lyman Case Prep Xpress $103.99
The Lyman Case Prep Xpress lets you chamfer inside and out, brush your necks, clean/uniform primer pockets, and ream military crimps. On sale at Amazon.com with $103.99 Prime pricing, this is a good deal. Lyman’s Case Prep Xpress sells elsewhere for $130.00 or more. Here is a review from a Verified Purchaser: “The unit is quiet, sturdy, and the attachments do what they are supposed to do. It already has made a difference in my reloading speed, and most importantly, my comfort. I highly recommend this unit.” (Strafer, 4/7/14)
6. Midsouth — Norma Tac-22 .22 LR Ammo, $3.99/box
This Norma .22 LR ammo shoots WAY better than you’d expect given the low price — just $3.99 per 50ct box at Midsouth. These test targets come from Champion Shooters Supply. That vendor reports: “We have found this to run very well in Ruger rifles, handguns, and target pistols. These are 5-shot groups at 50 yards with an Anschutz 1913 rifle. This is an incredible value.” We suggest you grab some of this Tac-22 while you can at these rock-bottom prices.
7. Midsouth — Hornady LnL Auto Charge Scale/Dispenser, $158.99
The Hornady Lock N Load Auto Charge Electronic Scale/Dispenser is now on sale for just $158.99 at Midsouth Shooters Supply, discounted way down from the regular $226.24 price. That’s the lowest price we’ve seen on this product in a long time, making this a real bargain. If you are looking for an affordable combination digital scale and powder dispenser, this is very attractive pricing. By comparison, the new RCBS ChargeMaster Lite sells for around $250.00 and is back-ordered at most vendors. That means you can save at least $90.00 by buying RED instead of GREEN.
8. Amazon — Cotton Cleaning Patches, 800 for $9.99 – $17.99
Got patches? Here’s a great deal on 100% cotton flannel patches. There are many sizes available, starting at $9.99 for 800 one-inch “17 Cal” patches. For 6mm rifles, we actually like the 1.25″ round “22/223″ sized patches priced at $11.99 for 800. Choose either round patches or square patches in most sizes. We generally like round patches for use with spire-tip jags, but some shooters prefer to wrap their patches around a jag or brush and square patches work better for wrapping. The large, 2″-square .30 Cal patches cost $17.99 for 800. These prices include FREE Shipping for Prime Members.
May 1st, 2017
The Second Amendment Foundation, joined by several other groups and individuals, has filed a lawsuit in Federal District Court in California, challenging that state’s laws prohibiting the possession, use or acquisition of so-called “large capacity magazines,” calling the state’s bans on magazines “hopelessly vague and ambiguous.”
Joining SAF are the Calguns Foundation, Firearms Policy Coalition, Firearms Policy Foundation and six individuals including one retired California peace officer. The lawsuit was filed in U.S. District Court for the Eastern District of California.
The lawsuit raises a constitutional challenge to California Penal Code § 32310, as recently amended by Senate Bill 1446 and Proposition 63, and Penal Code § 32390 (the “Large-Capacity Magazine Ban”). Collectively those laws require Californians to relinquish, forfeit, or destroy lawfully-obtained full capacity magazines. The penalties for non-compliance are severe. The lawsuit alleges that if these measures are enforced as applied, they would “individually and collectively prohibit law-abiding citizens from continuing to possess, use, or acquire lawfully-owned firearms, in common use for lawful purposes such as self-defense (inside and outside the home), competition, sport, and hunting.”
“What we see in the enactment of such laws,” said SAF founder and Executive Vice President Alan M. Gottlieb, “is continued erosion by the state of its citizens’ Constitutional rights guaranteed under the Second Amendment. When the U.S. Supreme Court incorporated the Second Amendment to the states via the 14th Amendment under the 2010 McDonald ruling, it automatically should have stopped this kind of prohibition.
“As we state in our lawsuit,” he continued, “this magazine ban fails to provide fair or even adequate notice to law-abiding gun owners of what they may do with their personal property without being subject to criminal sanctions. In effect, this ban amounts to a backdoor form of confiscation, in part, of bearable arms that are protected by the Constitution.”
“Enforcement of this ban,” Gottlieb concluded, “would immediately place thousands of law-abiding California gun owners in jeopardy of criminal liability and subjects their personal property to forfeiture, seizure and permanent confiscation, which is government taking, without due process or compensation. We cannot allow that to go unchallenged.”
The Second Amendment Foundation (www.saf.org) is the nation’s oldest and largest tax-exempt education, research, publishing and legal action group focusing on the Constitutional right and heritage to privately own and possess firearms. Founded in 1974, The Foundation has grown to more than 650,000 members and supporters and conducts many programs designed to better inform the public about the consequences of gun control.
April 28th, 2017
Estimating Actual Cost per Round by Caliber
This article comes from the USAMU, which provide shooting and reloading tips on its Facebook Page. This week’s USAMU TECH TIP outlines a ballpark-estimate method of calculating the actual cost per round of different calibers. Some applications, and some shooters, by virtue of their high level of competition, require the very best ballistic performance available — “Darn the cost, full speed ahead!
If you are in serious contention to win a major competition, then losing even a single point to inferior ballistic performance could cost you a national title or record. However, this “horsepower” does come at a cost! Some calibers are barrel-burners, and some offer much longer barrel life. Look at this comparison chart:
Estimated Cost Per Round by Cartridge Type
Below are some estimated total expense per round (practice and competition) based on component costs, type used, expected barrel life and a standard, chambered barrel cost of $520.00 across calibers.
5.56x45mm: $0.46/round (barrel life 6,000 rounds)*
6mmBR: $0.81/round (barrel life 2800 rounds)
6XC: $0.97/round (barrel life 2200 rounds)
.308 Win: $0.80/round (barrel life 4500 rounds)
6.5-284: $1.24/round (barrel life 1100 rounds)
*Note the high round count estimate for 5.56x45mm. This is a bit deceptive, as it assumes a period of “lesser accuracy” use. The USAMU says: “Much of the difference you see here between 5.56 and .308 is due to using the 5.56 barrel for 100-200 yard training with less-expensive, 55gr Varmint bullets after its long-range utility is spent”. |
Moreover, while some applications require specialized, high-cost components, others do not. And, if the shooter is still relatively new to the sport and hasn’t refined his skill to within the top few percentile of marksmen, a more economical caliber choice can help stretch a limited budget. Translation: More skill per dollar!
In this post, the prices for all items mentioned here were taken from a major component supplier’s current advertisements, and all brass was of top quality, except in the case of 5.56mm. There, 200 top-quality, imported cases were reserved for 600-yard shooting, and the other brass used was once-fired Lake City surplus.
Cartridge cases were assumed to be loaded 10 times each. [Your mileage may vary…] Bullet prices assumed the use of less-expensive, but good-quality match bullets for the bulk of shooting as appropriate.
The cost of top-tier, highly-expensive match bullets was also calculated for a realistic percentage of the shots fired, based on ones’ application. Barrel life by caliber was taken from likely estimates based on experience and good barrel maintenance.
Brass Costs Based on 10 Loads Per Case
Often, handloaders may calculate ammunition cost per round by adding the individual costs of primers, powder charges and projectiles. Many don’t consider the cost of brass, as it is reloaded several times. Here, we’ll consider the cost of enough top-quality brass to wear out a barrel in our given caliber, at 10 loads per case, except as noted above.
Don’t Forget Amortized Barrel Costs
Few shooters factor in the full, true cost of barrel life. Depending on caliber, that can dramatically increase the cost per round. For example, consider a long-range rifle in 6.5/284 caliber. This cartridge performs amazingly well, but at a cost. Ballpark estimated barrel life [in a top-quality barrel] is 1100 rounds. Some wear out faster, some last longer, but this gives a rough idea of what to expect.
Accurate barrels are a joy to use, but they are an expendable resource!
A top-quality barrel plus installation was estimated at about $520.00. At 1100 rounds, barrel life adds $0.47 per round to our total cost. Thus, what had started out as an [components-only estimate, with brass cost] of $0.76/round now totals $1.24 per shot!
Cost Considerations When Choosing a Catridge Type
Some shooters might ask themselves if they could meet their present needs with a more economical caliber. If so, that equates to more practice and matches per available dollar, and more potential skill increase on the available budget.
Each shooter knows his skill level, practice needs, and shooting discipline’s requirements. Some might shoot NRA Service Rifle or Match Rifle using a 5.56mm with a long barrel life. Others might be Match Rifle shooters faced with choosing between, say, a 6mm BR vs. 6XC. A realistic assessment of ones needs, performance-wise, may help guide the shooter toward a caliber that’s most optimized to their needs at the moment.
Admittedly, the factors affecting cost for any individuals circumstances can vary significantly. However, hopefully this will provide one useful method of evaluating one’s training and competition choices, based on their skill, goals and needs.
April 27th, 2017
Got a big shooting shopping list? Then here’s a great opportunity. Now through April 30th at 11:59 PM you can get $9.00 flat-rate shipping from Midsouth Shooters Supply, with a $99.00 minimum order. That can translate to significant savings on big orders, or heavy items. Compare the true shipping costs from other vendors to see what a good deal this can be (some vendors charge $15 to ship a couple boxes of ammo). Note: Regular hazmat charges apply to powder, primers, and other hazmat items.
If you’re shopping at Midsouth, here are some of the very good values you might want to check out:
April 26th, 2017
Click Photo to read full test results in Target Shooter Magazine.
Mother of All LR Primer Tests
If you shoot a .308 Win, or any cartridge that uses a Large Rifle (LR) primer, you should read an important article by Laurie Holland in Target Shooter Magazine. Holland, a talented shooter from the UK, tested no less than sixteen (16) different large primer types using a custom F-TR target rifle shot from the bench. Laurie loaded .308 Win ammo* with 16 LR primer varieties and then tested for average velocity, ES/SD, and group size. This may be the most comprehensive and thorough LR primer test ever done. Here are the primer types tested:
1. CBC Magtech 9½
2. CCI 200 LR
3. CCI BR2 Match
4. CCI 250 Magnum
5. Federal 210
6. Federal 210M Match
7. Federal 215M Magnum Match
8. Fiocchi Large Rifle |
9. Kynoch Large Rifle
10. Murom KVB-7 (PMC LR)
11. Norma Superflash LR
12. PMC LR Magnum
13. Remington 9½ LR
14. Remington 9½ M Magnum
15. Sellier & Bellot LR
16. Winchester WLR |
Test Rig: Osprey Rifles-built F-TR rifle with Savage PTA action, 32″ Bartlein 1:12″-twist ‘Heavy Palma’ barrel, and Dolphin Gun Company modular stock with an F-Open/Benchrest fore-end.
Some of Laurie’s results may surprise you. For example, would you guess that Sellier & Bellot primers had the lowest ES, by a significant margin? And get this, among ALL the primers tested, Rem 9½M Magnum primers produced the lowest velocity, while Rem 9½ LR (non-magnum) primers yielded the highest velocity. (The total velocity spread for all primers was 35 fps). That’s counter-intuitive and it’s odd that Rems were at opposite ends of the speed spectrum among ALL primers tested.
“The rationale for doing side-by-side tests is to see what effect primer choice has on ballistics, i.e. average velocities and MV consistency. There are a great many views on the subject, a few based on tests (including primer flame photography) but most apparently hearsay.” — Laurie Holland
Every serious hand-loader should definitely read the full test results to understand Laurie’s methodology and get all the details. This is an important test, with significant findings. But if you can’t spare the time right now, here are some highlights below:
Primer with Lowest Velocity: Remington 9½ M Magnum (2780 fps)
Primer with Highest Velocity: Remington 9½ LR (2815 fps)
Primer with Lowest ES/SD: Sellier & Bellot LR (12/3.1 fps)
Primer with Highest ES/SD: Remington 9½ M Magnum (47/14.0 fps)
Primer with Smallest Group Size: Remington 9½ LR (0.43″ average, three 5-shot groups)
Primer with Biggest Group Size: CBC Magtech 9½ (0.7″ average, three 5-shot groups)
Editor’s Comment: Laurie shot three, 5-shot groups at 100 yards with each primer type. The average group size for the top six primers varied by only 0.10″ (0.43″ to 0.53″), so one can’t conclude that one type is much better than another. Total group size variance (from best to worst) was 0.27″.
“The biggest surprise to me … came from an elderly (at least 10 years) lot of Czech Sellier & Bellot standard caps with an ES of 12 and SD of 3.1 fps, way below those of the nearest competitor. By contrast to the Fiocchis, they were an almost slack fit in the cases and this may have contributed to their consistent performance.” — Laurie Holland
NOTE: Values in chart are based on 15-Shot strings. The ES/SD numbers will therefore be higher than is typical with five-shot strings.
All ES/SD Values from 15-Shot Strings
Testing 16 primer types was a huge task — we commend Laurie for his hard work and thoroughness. This extensive test is an important contribution to the “knowledge base” of precision shooting. Laurie’s findings will doubtless influence many hand-loaders who hope to produce more consistent ammunition, or achieve better accuracy. Credit should also be given to Target Shooter Magazine for publishing the results. Well done gentlemen…
*Reloading method for Test Ammo: “Test batches consisted of 16 or 17 rounds for each primer, charges thrown by an RCBS ChargeMaster and checked on lab-quality electronic scales, adjusted if necessary to within ± 0.04gn, so any charge weight variation would be under 0.1 grain which equates here to 5 fps.”
April 25th, 2017
 The shooting season is now in full swing. When you head to the range you’ll want to be prepared. That means collecting all the gear you’ll need at the range. It’s easy to forget small, critical items, so we’ve provided a checklist of the small “extras” you should pack before you head out to the range. In addition to rifle, rests, ammo, targets, and cleaning gear, here are a dozen essentials you should include in your range bag.
 • Shell-Holder — If you don’t have calipers, you can use a shell-holder to check for excessive case expansion from hot loads. If a fired case doesn’t slip into the shell-holder easily, your load is definitely TOO HOT.
• Extra Earplugs — Always use ear protection when shooting. We bring a 35mm film canister with extra sets of foam earplugs.
 • Hex Wrench or Screwdriver for action screws — Action screws can work loose with time. Always bring the appropriate hex wrench or screwdriver whenever you go to the range.
• Small Wrench for Scope Rings — Check the tension of your scope base and ring fasteners before you go. Bring along a small Torx wrench for the ring screws (or other tool that fits your fasteners).
• Normal and Under-sized Jags — It is often wise to use one-caliber undersize jags when applying solvent with cotton patches. You should have a couple sizes in your range kit.
 • Extra Batteries — Bring extra batteries for all your electronic gear — which can include chronograph, windmeter, digital camera, GPS etc.
• Small Notebook and Pen or Pencil — Use the notebook to record chron data, log group sizes, and make notes about wind and weather conditions.
• Adhesive dots — Bring a few sheets of adhesive dots (sold at office supply stores). Use small white or black dots as target pasters. Use larger red or orange dots as aiming points (target centers).
 • Folding Chair or Camp Stool — This comes in handy if you’re spotting for another shooter, or if you reload away from the firing line.
• Water Bottle — You can’t shoot well if you’re dehydrated. Bring at least two quarts of water with you and keep a bottle at the bench.
• Surveyors’ Tape and Wood Stakes — You can make inexpensive wind indicators using surveyors’ tape attached to the top of wood stakes.
 • Small Plastic Ruler — Use this to measure your group sizes. A transparent (see-through) ruler works best. Rulers are also useful for drawing lines on targets.
This list is not intended to be exclusive. There are many other items you may wish to include. Obviously bring safety glasses, and Sharpie-type pens are always handy to mark targets. We invite our readers to add other “essentials” to the list. The important thing is to plan ahead, packing your key items before you drive to the range.
April 24th, 2017
At the request of our readers, we provide select “Deals of the Week”. Every Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, 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.
1. Kentucky Gun Co. — Ruger Prec. Rifle 6.5 Creedmoor, $1168.01
Here’s a great deal if you’re looking for a GEN2 6.5 Creedmoor Ruger Precision Rifle for PRS events or other bolt-action tactical applications. The 6.5 Creedmoor is the hot ticket for this rifle, and RPRs with this chambering have been in short supply. You’ll find many sellers charging $1400.00+ for this rifle, if they have it at all.
This week you can get a GEN2 Ruger Precision Rifle in 6.5 Creedmoor for just $1168.01 from Kentucky Gun Company, with FREE Shipping to boot. The “Cash Price” price is even cheaper, $1133.99. And GunPrime.com also has the 6.5CM RPR for $1199.00 this week. Curious about the differences between the GEN2 Ruger Precision Rifle and the original Model? CLICK HERE for a complete spec comparison and a video (scroll down landing page).
2. Midsouth — Norma Tac-22 .22 LR Ammo, $3.99/box
This Norma .22 LR ammo shoots WAY better than you’d expect given the low price — just $3.99 per 50ct box at Midsouth. These test targets come from Champion Shooters Supply. That vendor reports: “We have found this to run very well in Ruger rifles, handguns, and target pistols. These are 5-shot groups at 50 yards with an Anschutz 1913 rifle. This is an incredible value.” We suggest you grab some of this Tac-22 while you can at these rock-bottom prices.
3. Natchez — Surplus SKB 5041 Transport Cases, $129.99
Natchez has obtained a supply of British MOD Surplus SKB 5041 rifle cases. These were ordered as mine detector cases, but were never issued. Natchez has removed the foam cut for the detectors and replaced it with new 2-piece convoluted foam. Interior dimension of the case is 50″x14.5″x5″ so this will hold long-barrel match rifles comfortably. These are extremely high-quality cases, very tough and rugged, waterproof with gaskets. These cases feature four SKB patented trigger latches, four reinforced padlock locations, and inline wheels. Though in excellent condition, some case may have minor exterior scuffs. You won’t find a better case at anywhere near the price. These normally retail for $299.99.
4. Sportsmans Outdoor — S&W M&P9 Shield, $239.99 after Rebate
Here’s an awesome deal on a popular Smith & Wesson 9mm carry pistol. The M&P9 Shield (with thumb safety) is priced at just $314.99 at Sportsmans Outdoor Superstore. But it gets better — Smith & Wesson is offering a $75.00 Rebate. That lowers your net cost to just $239.99. That’s half what you might pay for a similar 9mm Glock. Good reason to buy American, and S&W’s warranty is rock solid. NOTE: This same M&P9 pistol without thumb safety is offered by Brownells for $359.99, or $284.99 after mail-in rebate.
5. Midsouth — 20-60x60mm Vortex Spotting Scope, $399.99
This is a very good spotting scope for the price. Yes it gives up some low-light performance to a spotter with an 80mm objective, but otherwise it is a good performer, and we can’t think of much that will touch this Vortex Diamondback spotting scope for anywhere near the $399.99 sale price. Choose from angled or straight version for the same $399.99 price, which includes the 20-60X zoom eyepiece.
6. Amazon — Frankford Arsenal Master Tumbler Kit, $67.99
This Master Tumbler Kit contains everything you need to tumble rifle or pistol brass. Now on sale for $67.99 with free shipping, this Kit contains: Vibratory Tumbler, Rotary Media Separator, Plastic Bucket, 3 lbs. Cleaning Media, and 4 oz. Brass Polish.
7. Powder Valley — Reloder 16 Powder, 1-pound and 8-pound
Powder Valley now has Alliant Reloder 16 (RL16) in stock in both 1-lb ($23.95) and 8-lb ($178.95) containers. If you’re not familiar with this relatively new propellant, we can tell you that RL16 may be the best replacement yet for hard-to-find Hodgdon H4350. Burn rate is very similar to H4350, and RL16 is extremely temp-stable. Most importantly, our Forum members are reporting outstanding accuracy with Reloder 16. It is well suited for mid-sized cartridges such as 6XC, 6mm Creedmoor, 6.5 Creedmoor, 6.5×47 Lapua, and .260 Remington. If you like H4350, we recommend you try a pound of Alliant’s impressive Reloder 16.
8. Monmouth Reloading — 500 Lake City 5.56 Cases, $35.00
500 pieces of Lake City brass for just thirty-five bucks? Yep, that’s a great deal for anyone who needs .223/5.56 brass for varmint safaris and tactical comps. Monmouth Reloading is selling genuine, once-fired Lake City 5.56x45mm brass sourced direct from the U.S. Military. NOTE: CLICK HERE and then select 500-ct pack — the 1000-ct is out of stock. Monmouth reports: “Our current stock of Lake City 5.56 looks to be all newer year Lake City head stamp but may contain a small percentage of other NATO headstamps. Lake City is a popular, reliable brass, normally capable of many reloads.” Monmouth includes 1% overage to account for any damaged brass. NOTE: Brass has crimped primers, so the pockets will need to be reamed or swaged prior to reloading.
9. Amazon — Howard Leight Electronic Muffs, $31.11
Every shooter should own a pair of Electronic muffs, even if you prefer shooting with earplugs and/or standard muffs. Electronic muffs are great when you are doing spotting duties or are working near the firing line. They allow you to hear ordinary conversations while still providing vital hearing protection. Right now Amazon.com has the Howard Leight Impact Sport Electronic Muffs on sale for just $31.11, with free Prime Shipping. This is good deal — these NRR 22 muffs are currently Amazon’s #1 seller in the category.
April 20th, 2017
Photo from Champion Shooters Supply. Groups shot with Anschutz 1913 match rifle at 50 yards.
Check out that group. That’s impressive accuracy at 50 yards. You’d expect to pay $10.00 or more per box for rimfire ammo that can shoot this well. But get this — you can now get the Norma Tac-22 for just $3.99 per box. That’s right, this is some of the lowest-priced “Big Name” rimfire ammo you can buy, yet it offers top-tier accuracy. Low cost with high performance — that’s hard to beat.
The target photos above come from Champion Shooters Supply, which may have gotten an exceptional lot. This vendor tells us: “We have found this to run very well in Ruger rifles, handguns, and target pistols. These are 5-shot groups at 50 yards with an Anschutz 1913 rifle. This is an incredible value.”
We agree. We just ordered some Norma Tac-22 ourselves. Grab it while you can at these rock-bottom prices. The best deal we found on Norma Tac-22 ammo was $3.99 per box at Midsouth (Click below).
Other vendors with this Norma Tac-22 .22 LR rimfire ammo:
Bullets.com, $5.25/box | Champion Shooters Supply, $4.80/box | Grafs.com, $6.29/box
April 18th, 2017
Most of us assume that if we weigh our powder carefully (down to the tenth of a grain or less) we can achieve a uniform powder fill from case to case in our handloads. Weighing does ensure that the weight of the propellant in each case is the same, but is the column of powder the same by volume each time? “Not necessarily” is the answer. An interesting experiment by our friend Boyd Allen demonstrates that the manner in which you place kernels in the case can make a significant difference in the height of the powder column within the brass case.
Using a Gempro 250 scale, Boyd measured exactly 30.6 grains of Vihtavuori N-133 powder. He then inserted this powder in the same cartridge case multiple times. (The case has a fired primer in place.) But here is the key — Boyd used various filling techniques. He did a slow fill, and a fast fill, and he also experimented with tapping and drop tubes. What Boyd discovered was that you can start with the exact same weight of powder (in fact the very same set of kernels), yet end up with vary different fill heights, depending on how you drop the kernels into the case. Look at the photos. Despite variations in lighting, the photos show the same 30.6 grains of powder, placed in the same cartridge, with four different methods.
Using funnels with long drop tubes packs kernels more tightly, creating a shorter powder column. That allows you to get more propellant (by weight) into the case.
Boyd Explains the Procedure Used for his Experiment.
EDITOR’s NOTE: So there is no misunderstanding, Boyd started with a weighed 30.6 grain charge. This identical charge was used for ALL four fills. After a fill the powder was dumped from the case into a pan which was then used for the next fill technique to be tried. So, the powder weight was constant. Indeed the exact same kernels (of constant weight and number) were used for each fill.
Boyd writes: “I used the same powder for all fills, 30.6 gr. on a GemPro 250 checked more than once. All fills employed the same RCBS green transparent plastic funnel. The fast drop with the funnel only overflowed when it was removed from the case neck, and 15 granules of powder fell on the white paper that the case was sitting on. The fast-funnel-only drop with tapping, was done with the funnel in place and the case and funnel in one hand, while tapping the case body with the index finger hard, many times (about 20 fast double taps). My idea here was to “max out” the potential of this tapping technique.
The slow drop with the funnel and 10″-long .22 cal. Harrell’s Precision drop tube, was done by holding the scale pan over the funnel and tapping the spout of the pan repeatedly on the inside of the funnel about 1/3 down from the top, with the scale pan tilted just enough so that the powder will just flow. Many taps were involved, again, to max out the technique.
Again, to be clear, after each case filling, the powder was poured from the case back into the scale pan carefully. You may notice the similarity between the fast drop with the drop tube, and the funnel only with tapping. Although I did not photograph it, fast tube drop and tapping (combined) improved on tapping alone, but only to about half as far down the neck as the slow with drop tube. Due to the endless possible permutations, I picked four and left it at that.
I believe that I can make the rough judgment that the scale pan funnel and drop tube technique, which involved a longer drop period, and probably less velocity at the top of the tube, left more room in the top of the case neck than the slow drop from the measure with the same drop tube. You have both pictures, so you can make the comparison.” — Boyd
Does Powder Column Height Variance Make a Difference?
Boyd’s experiment proves pretty conclusively that the method of dropping a given weight of powder can affect the height of the powder column in the case and the degree of powder compression (when a bullet is seated). He showed this to be true even when the exact same set of kernels (of constant weight) was used in repetitive loadings. This raises some interesting questions:
1. Will subsequent cartridge transport and handling cause the powder to settle so the variances in powder column height are diminished?
2. If significant inconsistencies in powder column height remain at time of firing, will the difference in fill level hurt accuracy, or result in a higher extreme spread in velocity?
3. Is there any advantage (beyond increased effective case capacity) for a tight (low level) fill vs. a loose (high level) fill?
We don’t know the answer to these follow up questions. This Editor guesses that, if we tested low-fill-height rounds vs. high-fill-height rounds (all with same true fill quantity by weight), we might see meaningful differences in average velocity. I would also guess that if you fired 10 rounds that exhibited quite a difference in powder column heights, you might see a higher ES/SD than if you shot 10 rounds loaded with a very consistent powder column height (either high or low). But further testing is needed to determine if these predictions are true.
April 18th, 2017
Here are five Peterson .308 Win casings after 32 loading/firing cycles (31 at SAAMI max). The brass remained intact, with no cracks. The circles below the shoulders are markings from pressure testing.
This story comes from the Peterson Cartridge website.
Torture Testing Peterson .308 Win Brass — 32 Load Cycles
Recently Peterson’s ballistician had some extra time in his schedule, and asked what he should work on next. He was told, “Just for the heck of it, see how many times you can fire our .308s before you experience failure.” So that’s what he set out to do.
He took five casings out of inventory and loaded them at SAAMI max pressure, which is the pressure we use for all of our longevity testing. It is a hot load, and he did the firing out of Peterson’s Universal Receiver. This way he could measure pressures and velocities each shot. He shot all five, 20 times. (It takes a long time to do that. Load five casings. Shoot five times. Back into the lab to reload, back into the indoor range to shoot, back into the lab, and so forth.)
After 20 firings with no sign of case deterioration, Peterson’s tester asked if he should keep going. “Sure, let’s see how long these can go”, was the reply. So he shot them five more times. Same result. All casings still in good shape. We told him to keep going. He shot each of them six more times. At this point each of the five casings had been fired 31 times. After several days of this the casings were still in good shape but “ballistician fatigue” was setting in. Finally he said, “Let me take these cases to an outdoor range and see how they do for accuracy.” The Peterson team agreed.
Five Shots at 100 Yards after 32 Load Cycles:
For the 32nd firing, the cases were loaded with a somewhat lighter load, and then tested for accuracy. The test rifle was a Tikka T-3 bolt action, with a 20 inch, 1:11″-twist barrel. After 32 firings the primer pockets had opened about 0.002″ (two-thousandths) but were still tight enough for further use. There were no cracks or signs of head separation. The tester put five shots in three holes at 100 yards. The group was 1.5 inches for the five shots, on a somewhat windy day.
Story Tip by EdLongrange. We welcome reader submissions.
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