We are often asked “Can I get more velocity by switching primer types?” The answer is “maybe”. The important thing to know is that changing primer types can alter your load’s performance in many ways — velocity average, velocity variance (ES/SD), accuracy, and pressure. Because there are so many variables involved you can’t really predict whether one primer type is going to be better or worse than another. This will depend on your cartridge, your powder, your barrel, and even the mechanics of your firing pin system.
Interestingly, however, a shooter on another forum did a test with his .308 Win semi-auto. Using Hodgdon Varget powder and Sierra 155gr Palma MatchKing (item 2156) bullets, he found that Wolf Large Rifle primers gave slightly higher velocities than did CCI-BR2s. Interestingly, the amount of extra speed (provided by the Wolfs) increased as charge weight went up, though the middle value had the largest speed variance. The shooter observed: “The Wolf primers seemed to be obviously hotter and they had about the same or possibly better ES average.” See table:
Varget .308 load
45.5 grains
46.0 grains
46.5 grains
CCI BR2 Primers
2751 fps
2761 fps
2783 fps
Wolf LR Primers
2757 fps
2780 fps
2798 fps
Speed Delta
6 fps
19 fps
15 fps
You can’t extrapolate too much from the table above. This describes just one gun, one powder, and one bullet. Your Mileage May Vary (YMMV) as they say. However, this illustration does show that by substituting one component you may see significant changes. Provided it can be repeated in multiple chrono runs, an increase of 19 fps (with the 46.0 grain powder load) is meaningful. An extra 20 fps or so may yield a more optimal accuracy node or “sweet spot” that produces better groups. (Though faster is certainly NOT always better for accuracy — you have to test to find out.)
WARNING: When switching primers, you should exercise caution. More speed may be attractive, but you have to consider that the “speedier” primer choice may also produce more pressure. Therefore, you must carefully monitor pressure signs whenever changing ANY component in a load. Glen Zediker recommends decreasing your load ONE FULL GRAIN when changing to a different primer type, one that you haven’t used before.
Western Powders has released its NEW Handloading Guide, Edition 7.0. This $2.99 print resource contains the latest load data for Western’s propellants including Accurate, Ramshot, and Blackhorn powders. Edition 7.0 features the most current data available for Ramshot and Accurate powders, including popular LT30 and LT32, and new Accurate TCM, Accurate 11FS and Ramshot LRT propellants. This latest load guide also has load data for the new 224 Valkyrie, 300 Norma, and 30 Nosler cartridges. Along with reloading recipes, this resource features helpful articles on handloading methods and rifle maintenance/cleaning with X-Treme products.
In the new Handloading Guide 7.0 , you’ll find load data for over 100 rifle cartridges. The cartridge listings are up to date — you’ll find the popular new mid-sized competition cartridges, such as the 6.5 Creedmoor and 6.5×47 Lapua, along with many popular wildcat varmint cartridges, such as the 20 Vartarg, 20 Tactical, and 20 BR. Benchresters will also find recipes for the new LT 30 and LT 32 powders which have proven very accurate in the 30BR and 6PPC respectively.
Download FREE Version 6.0 Guide:
If you can live without the very latest info, you can still get Version 6.0 of Western’s Reloading Guide for FREE. That’s right Version 6.0 is a FREE downloadable PDF. This FREE Reloading & Load Data Guide (Edition 6.0) contains thousands of recipes for handgun and rifle cartridges (plus shotshell and muzzle-loading info).
Here’s a simple modification that makes your classic beam balance more user-friendly. For a few dollars you can enhance your balance scale system to improve work-flow and reduce eye strain. This clever modification makes it easier to see the balance’s zero-mark center-line when weighing charges.
When he chooses to measure his loads or sort bullets by weight, Forum Member Boyd Allen likes his trusty RCBS 10-10 scale. He finds that it works predictably, time after time, and it doesn’t suffer from the drift and calibration issues that plague some of the less-expensive electronic scales on the market.
To make it easier to see the balance point, Boyd has adapted a magnifying glass with a mirror. This makes the end of his balance beam easier to view from his normal position on the bench. Boyd explains: “This set-up uses a cheap magnifier with positioning arms that was probably designed to hold and magnify small objects while soldering them. I think that it came from Harbor Freight many years ago. The mirror lets you look at the scale as if is was at eye level, and of course the magnifier makes the image easier to see.”
Do You Like H4350? Then You Should Try Reloder 16 — It Is Accurate and Temp Stable
Alliant Reloder 16 is used now by many top shooters for cartridges that work well with Hodgdon H4350. In fact, we’d say that Reloder 16 is the best substitute for H4350 on the market. Alliant’s RL 16 is very temp stable, offers good velocity, and the accuracy is top tier. Some guys report slightly better accuracy than H4350 in the .284 Win, .260 Rem, 6.5 Creedmoor, 6mm Creedmoor, and 6XC cartridges. If you currently use H4350, you should definitely give Alliant Reloder 16 a try. The powder also boasts excellent lot-to-lot consistency and contains a proprietary de-coppering additive.
This is NOT just a slower version of Alliant’s double-based Reloder 15 (which words great in the 6mmBR and Dasher cartridges). Reloder 16 is a completely new formulation, produced in Sweden by Bofors for Alliant. Reloder 16 utilizes TZ technology, which manipulates the response of the propellant and resists the natural tendency to generate more pressure at higher temperatures and less pressure at lower temperatures. As a result, Alliant’s Reloder 16 offers truly outstanding temperature stability.
Match and Hunting Cartridge Applications:
Alliant tells us that Reloder 16 “is ideal for traditional hunting cartridges, such as .30-06 Springfield and .270 Winchester, as well as 6.5mm target loads and tactical applications wherein temperature stability is required.” We also think the powder will work well in these popular match cartridges: 6XC, 6mm Creedmoor, .243 Win, 6.5×47 Lapua, 6.5 Creedmoor, .260 Rem, .284 Win, and .300 WSM. For example, Alliant’s Reloder 16 Load Data Page shows a 2932 FPS load with Berger 130 grain Hybrid bullet in the 6.5 Creedmoor.
Alliant Reloder 16 Load DATA for 6.5 Creedmoor:
Alliant Reloder 16 Load DATA for .243 Winchester:
NOTE: This is a partial .243 Win Data set. More loads available HERE.
Do you need to pull bullets that have been seated in a case? You can use lever-actuated, collet-type pullers, or inertial hammer-style pullers, but there is a faster solution. The Grip-N-Pull bullet puller is a precision-machined hand clamp that works for multiple calibers. A single Grip-N-Pull can replace several other tools, while being faster to use. With larger-diameter bullets loaded with light-to-moderate neck tension, it works well. The bullets come out pretty easily, with no scuff marks or dents. For smaller-diameter, .204 to .243 caliber bullets, it may be hard to grip the bullet easily, or you may end up with some jacket damage. And we wouldn’t use this for factory-crimped cartridges.
Introduction to Grip-N-Pull — How It Works:
How to Use the Grip-N-Pull
Put your loaded case in the shell-holder on a reloading press. Raise the ram so the bullet is exposed at the top of the press. Then select the correct, caliber-specific slot in the Grip-N–Pull, clasp the bullet firmly, then lower the ram. The bullet withdraws from the case-neck, retained in the tool. Fast and simple. If there isn’t much neck tension (or a crimp), the bullet should come out undamaged.
Not So Great for Small-Diameter Bullets
Watch this video — the tester says the Grip-N-Pull works well with larger-diameter bullets, but there can be slippage with smaller-diameter projectiles, or those with short bearing surfaces. NOTE: When there is a lot of neck tension, you have to grip extremely hard which can cause your hand to hurt after a while. And the bullets can get marred.
This video explains some of the shortcomings of the Grip-N-Pull.
Four Grip-N-Pull Models Available Grip-N-Pull bullet pullers can be used for multiple calibers. For example, the Standard Rifle Grip-N-Pull pulls bullets for these calibers: .17, .20, .22, .24, .25, .26, .27, .28, and .30. The Large Rifle model works with 8mm, .338, .375, .416 and .458. There is a third model for pistol cartridges, and a fourth “Mil-Spec” unit that does 5.56, 7.62, .338 and .50 BMG. Grip-N-Pull bullet pullers are made of 1/4″ heavy-duty #30 stainless steel and are backed by a lifetime warranty.
Speed and Efficiency of Grip-N-Pull
The Grip-N-Pull’s creators claim this hand clamp cuts bullet pulling time in half. For a speed comparison between Grip-N-Pull and a hammer-style (inertial) bullet puller, watch this Extreme Outer Limits video. Bob and Chris Beck do a head-to-head comparison between the Grip-N-Pull and an inertia puller. It’s no contest — the Grip-N-Pull is way faster, and the powder stays in the case.
Pull Comparison — Grip-N-Pull Vs. Hammer-Style Inertial Puller
When your cases become hard to extract, or you feel a stiff bolt lift when removing a cartridge, it’s probably time to full-length size your cases, and “bump” the shoulder back. With a hunting load, shoulder bumping may only be required every 4-5 loading cycles. Short-range benchrest shooters, running higher pressures, typically full-length size every load cycle, bumping the shoulder .001-.002″. High Power shooters with gas guns generally full-length size every time, and may need to bump the shoulders .003″ or more to ensure reliable feeding and extraction.
Use Shims for Precise Control of Shoulder Bump
Some shooters like to set the “default” position for their full-length die to have an “ample” .003″ or .004″ shoulder bump. When they need less bump, a simple way to reduce the amount of shoulder movement is to use precision shims in .001″ (one-thousandth) increments.
Here are reports from Forum members who use the shims:
“Great product. I have my die lock ring(s) adjusted for the shortest headspace length on my multiple chambers 6BRs and 6PPCs. When needing a longer headspace, I just refer to my notes and add the appropriate shim under the lock ring. Keep it simple.” — F.D. Shuster
Mats Johansson writes: “I’ve been using [shims] since Skip Otto (of BR fame) came out with them. I set up my dies with the .006″ shim, giving me the option of bumping the shoulder a bit more when the brass gets old and hardens while still having room to adjust up for zero headspace, should I have missed the original setup by a thou or two. Hunting rounds can easily be bumped an extra .002-.003″ for positive, no-crush feeding. Being a safety-oriented cheapskate, I couldn’t live without them — they let me reload my cases a gazillion times without dangerous web-stretching. Shims are a must-have, as simple as that.” — Mats Johansson
Sinclair Int’l offers a seven-piece set of Sizing Die Shims that let you adjust the height of your die (and thereby the amount of bump and sizing) in precise .001″ increments. Sinclair explains: “Some handloaders will set their die up to achieve maximum sizing and then progressively use Sinclair Die Shims between the lock ring and the press head to move the die away from the shellholder. Doing this allows you to leave the lock ring in the same position. These shims are usually available in increments of .001″ and work very well.”
Seven Shims from .003″ to .010″
Sinclair’s Die Shim Kit (item 22400) includes seven shims in thicknesses of .003, .004, .005, .006, .007, .008, and .010. For ease of use, shim thickness is indicated by the number of notches cut in the outer edge of each shim. Even without looking you can “count” the notches by feel. Normally priced at $11.99, this shim kit is on sale now for $10.99.
Posting on Facebook, Michael W. said: “Maybe it’s just me but I LOVE coming home to packages from the UPS driver sitting on my deck! Now I can get serious about creating some Match Grade ammunition!” Michael showed off some very impressive reloading hardware, including a 21st Century Shooting “Mini-Lathe” Neck-Turning system, 21st Century Concentricity Gauge, Shars Tube Micrometer, and the A&D FZ-120i Precision Balance. Cool Tools indeed!
21st Century Neck-Turning Lathe — A Gem
The 21st Century Neck-Turning Lathe works great — this is what we use to turn necks. It floats at both ends, so it runs very smoothly. You can use it manually or with power. It gives you very precise, clean cuts with a minimum of case lube. The cutting tool is hard and sharp so you can do large quantities of brass without having to adjust the cutter position for wear. We’ve used a half-dozen neck turners and this 21st Century Unit is our favorite.
21st Century Concentricity Gauge — Smart, Efficient Design
The beautifully-crafted 21st Century Concentricity Gauge is fast and easy to use yet very precise. The twin, roller-equipped case supports slide back and forth on rails so you can measure any size case, from a 17 Fireball up to a 50 BMG. The horizontal dial indicator also slides on parallel rails so you can easily measure any spot on a case or loaded round — from bullet tip (or case mouth on empty case) down to the mid-body. We like to measure run-out on our sized, empty brass on the necks and then measure again on the bullet ogive with loaded rounds. The large-diameter wheel allows bump-free, “no wobble” case rotation, delivering better results than spinning cases with your fingers.
Concentricity gauge uses stainless turning rollers for less friction and more consistent read-outs.
A&D Precision Balance — Ultra-Precise with No Drift
The A&D FX and FZ-series scales are magnetic force restoration balances with 0.001 gram sensitivity so they are accurate to the kernel. This balance will not drift like less advanced, load cell-based digital scales. The scale’s high sensitivity and extreme stability allow you to weigh charges and sort brass, primers, and bullets with much higher precision.
What Gadget Would YOU Like To Have Delivered?
Here’s a question for our readers… What are YOUR favorite reloading tools on currently on your bench? And if you could have the UPS driver deliver a new tool tomorrow, what would you like him to bring? A 21st Century Hydro Bullet Seater (awesome Arbor Press)? Maybe a Whidden Micro-Adjustable Sizing Die? How about the amazing Auto Trickler and Auto-Throw system from Canada? That combines a A&D FX/FZ scale with a powder thrower and microprocessor-controlled trickler. With the push of a button you get a charge dispensed and weighed to single-kernel accuracy.
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, 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.
Here’s something you don’t see very often — a straight-pull 17 HMR with a handsome fancy AA Maple stock. The slick, straight-pull T-Bolt design lets you load/eject with a simple pull back/push forward movement. The T-Bolt cycles nearly as fast as a semi-auto, but with bolt-action accuracy. This rifle features Browning’s patent pending 10-round rotary Double Helix™ magazine. Browning says “No magazine is easier to load and more reliable” than the new Double Helix. This rifle originally sold for $839.99. Now, you can get one for $499.99 after $100 Browning Rebate. This same rifle is also available in .22 LR and .22 WMR for the same price. REBATE INFO.
2. Grizzly.com — Bald Eagle Rests $165.00 – $199.95
Bald Eagle (by Grizzly) offers one of the best value-priced front rests on the market. We’ve seen F-Class shooters win matches with the Bald Eagle Slingshot Windage Rest, which costs less than a fifth of a premium co-axial rest. For a new shooter, this is a very cost-effective solution. One Forum member purchased this Bald Eagle BE1006 rest for his grandson, deciding it was the best rest under $300.00. Both rests shown offer a cable (with large knob) for easy windage adjustment. The Slingshot model, in cast iron or aluminum, has an elongated front leg for added stability. This also brings the Windage knob within easy reach. The aluminum version (BE1005) is considerably lighter and $35 cheaper, so it may be preferred by rimfire and varmint shooters. Note: Front sandbag sold separately.
Bushnell’s highly-regarded Elite 4500 Series scopes offer very good performance and reliability for the price. Here’s a great deal on a Bushnell 6-24x40mm Elite 4500 with Multi-X Reticle, 1/4-MOA clicks, and 1″-diameter main tube. Right now this fine optic is just $359.99 — nearly $240 off the regular price. This would be a good choice for a varmint rifle. Hard to find better glass at anywhere near this price. Verified buyer states: “Great scope. Clear, tracks correctly, and is repeatable. Great glass, to my eyes better than Leupold VX3 and Weavers.” Get FREE Shipping with code FS180723 through 7/24/18.
4. Walmart — EZShoot Rifle Case with Shoulder Straps, $24.99
We like this versatile bag for hunting and varmint trips. The 47.2″ EZshoot gun case provides good protection for scoped rifles with up to about 27″ barrels. The large pockets will hold binoculars, laser rangefinder, windmeter, ammunition, and other gear. The big bonus is this inexpensive carry case includes comfortable, adjustable shoulder straps. That makes it easy to carry everything from your vehicle to your shooting area. You get all this functionality for under twenty-five bucks. Walmart currently offers this 47.2″ case for just $24.99 with FREE shipping to your residence.
5. Brownells — CCI .22 LR Ammo, $24.99/500 or $89.96 for 2000
Here’s a great deal on big-name, rimfire ammo. Right now you can get a 500-round pack of CCI Standard Velocity 40gr LRN ammo for just $24.99. That works out to just five cents ($0.05) per round. But it gets even better. If you purchase at least four 500-rd packs (2000 rounds total), you also get FREE shipping and a $10.00 discount with CODE NBM. With that “NBM” discount code, your total price is just $89.96 for 2000 rounds delivered, or 4.5 cents per round! That’s a great deal on reliable CCI ammo that’s good for plinking and rimfire cross-training. NOTE: If the JDC code has expired, try CODE PJS for free shipping on $99+ orders.
6. Grafs.com — Lyman Summer Sale, 10-22% Off Select items
Lyman has brought out some fine products in recent years, tools that offer excellent performance for the price. Now you can get a serious discount on a variety of Lyman products, including the popular Lyman BoreCam, and the Lyman Trigger Pull Gauge, our “go-to” tool for measuring pull weights. Here are some of the best Lyman Summer Sale deals at Grafs.com now:
7. ARMorALLY.com — Nosler RDF Bullets, $24-$29 per 100
Nosler’s line of RDF (Reduced Drag Factor) bullets have high BCs for their weight. Precision shooters are reporting outstanding accuracy. Given their high performance and consistency, RDF bullets represent a superior value. At ARMorAlly you can get Nosler RDFs for under $29 per 100 for popular 6mm and 6.5 mm sizes. That’s up to $25 less per box than some other premium brands. And the .22-Caliber RDFs are even cheaper. ARMorAlly also has great pricing on Nosler Ballistic Tip, Custom Competition, Accubond, ABLR, and Lead Free bullets. All Nosler Bullets HERE.
8. VihtaVuori — $5.00 Per Pound Rebate on Vihtavuori Powders
The 2018 VihtaVuori Rebate Program is under way. For a limited time, earn $5.00 back per bottle when you purchase VihtaVuori powders. Offer is valid on qualifying purchases made between August 15, 2018 and October 15, 2018. Be sure to keep your receipts and note the labels. The Rebate application MUST include proof of purchase showing retailer name and date of purchase. And the Rebate Form MUST include the serial number for each VihtaVuori bottle purchased.
VV Rebate Start Date: 8/15/2018
VV Rebate End Date: 10/15/2018
Postmarked By Date: 11/30/2018
Minimum Purchase: One 1-pound bottle
Maximum Purchase: Twelve 1-pound bottles
Maximum REBATE is $60.00
9. Amazon — Howard Leight MAX NRR33 Earplugs, $8.00/50 Pairs
20 Pairs
50 Pairs
These Howard Leight NRR33 Max plugs are your Editor’s favorite foam earplugs. Between shooting, motorcycling and mowing lawns, I probably have Max plugs in my ears 2-3 days a week. This is a very good price for a bulk pack of 50 pairs. And if you act soon, you can get free shipping to boot.
Here is an article Glen Zediker wrote for the Midsouth Blog. In this article Glen gives important advice on selecting, handling, seating, and testing primers. The right primer choice can and will affect your load’s performance and accuracy. And proper primer handling is essential for safety.
by Glen Zediker
The primer is one component in the collection that might not get all the attention it warrants. That’s because it is the one thing, above all other components, that you don’t want to just swap and switch around. We’ve all heard cautions about testing new lots of every component, especially propellant, but primers not only change lot to lot, they vary greatly in their influence on any one load, brand to brand.
The difference in one brand to the next can equal a good deal more or less pressure, for instance. While there are “general” tendencies respecting the “power” of various-brand primers, always (always) reduce the load (propellant quantity) when switching primers.
This has become more of an issue over the past few years as we’ve faced component shortages. I can tell you without a doubt that going from a WW to a CCI, or from a Remington to a Federal, can have a major influence on a load. I establish that from chronograph readings. No doubt, it’s best to have a good supply of one primer brand and lot that produces good results, and when that’s not possible, it’s a hard sell to convince someone to stop loading ammo and get back to testing. But. It is important. I can tell you that from (bad) experience. How I, and we all, learn most things…
When I switch primers, whether as a test or a necessity, I reduce my load ONE FULL GRAIN. There can be that much effect.
The Elements of a Primer
A primer is made up of a brass cup filled with explosive compound (lead styphate). Lead styphate detonates on impact. Primers don’t burn – they explode! In the manufacturing process, this compound starts as a liquid. After it’s laid into the cup, and while it’s still wet, a triangular piece or metal (the “anvil”) is set in. When the cup surface is struck by the firing pin, the center collapses, squeezing the explosive compound between the interior of the cup and the anvil. That ignites the compound and sends a flame through the case flash hole, which in turn lights up the propellant.
Primers Can be Dangerous — Particularly When Stacked
Don’t underestimate that. I’ve had one experience that fortunately only created a huge start, but I know others who have had bigger more startling mishaps. These (almost always) come from primer reservoirs, such fill-tubes. Pay close attention when charging up a tube and make sure all the primers are facing the right way, and that you’re not trying to put in “one more” when it’s full! That’s when “it” usually happens. What will happen, by the way, is akin to a small grenade. Static electricity has also been blamed, so keep that in mind.
Sizes and Types of Primers
Primers come in two sizes and four types. “Large” and “small”: for example, .223 Rem. takes small, .308 Win. takes large. Then there are pistol and rifle in each size.
Rifle primers and pistol primers are not the same, even though they share common diameters! Rifle primers [normally] have a tougher cup, and, usually, a hotter flash. Never swap rifle for pistol. Now, some practical-style competitive pistol shooters using their very high-pressure loads (like .38 Super Comp) sometimes substitute rifle primers because they’ll “handle” more pressure, but they’ve also tricked up striker power. That’s a specialized need.
Further, some primer brands are available with a “magnum” option. Some aren’t. My experience has been that depends on the “level” of their standard primer. A magnum primer, as you might guess, has a more intense, stouter flash that travels more “deeply” to ignite the larger and more dense powder column. It reaches further, faster.
Flash Consistency Counts Flash Consistency is very important, shot to shot. The consistency of every component is important: bullet weights, diameters, case wall thicknesses, and all the way down the list. We’re hoping to get more consistent behavior from a “match” or “benchrest” primer, and we’re paying more for it. I can tell you that some brands that aren’t touted as “match” are already consistent. That all comes from experience: try different primers, just respect the need to initially reduce the load for each test. I can also tell you that my notes tell me that the primer has a whopping lot to do with how high or low my velocity deviations plot out.
Primer Dimensional Differences and Primer Tools
One last thing — there are small variations in primer dimensions (heights, diameters) among various brands. These variations are not influential to performance. However — small diameter variations can influence feeding through priming tools. This can be a hitch especially in some progressive loading machines. Manufacturers usually offer insight (aka: “warnings”) as to which are or aren’t compatible, so find out.
This article is adapted from Glen’s books, Handloading For Competition and Top-Grade Ammo, available at Midsouth HERE. Learn more about Glen’s books at ZedikerPublishing.com.
If you are looking for a new, full-size single-stage reloading press, definitely consider the MEC Marksman. Created by the makers of the popular MEC shotshell reloading systems, the MEC Marksman combines a sturdy cast-iron frame with a modern open-front design. With a $189.99 street price the Marksman press cost roughly $30 more than an RCBS Rock Chucker, but the MEC offers some distinct advantages — such as an open front plus a floating shell-holder system.
Our friend Gavin Gear got his hands on a MEC Marksman press and put it through its paces. He came away impressed with the product, saying it delivers excellent performance, and has many impressive features. Gavin tells us: “Cast iron tools and machines are a lifetime investment. The made-in-USA MEC Marksman features ductile cast-iron construction, an open-front frame design for easy cartridge access, a new floating shell-holder design with a unique retention system, and ambidextrous handle setup.”
Gavin liked the Marksman’s system for holding spent primers. A tray sits behind the ram to catch spent primers exiting from a hole near the bottom of the ram. This is more foolproof than the plastic primer cups on some other single-stage presses. Expect less spent primer “spillage”.
The Marksman is sold as a stand-alone unit. However MEC also offers a very nice steel mount/riser for the Marksman. Gavin tested the Marksman with this riser, and he says it was sturdy and well-built. Gavin liked the riser. He said that elevating the Markman press up above the benchtop made it easier to handle cases and to operate the handle. The riser also has “wings” on the left and right, providing a pair of handy die-holders on each side.
A&D Precision Balance — Ultra-Precise with No Drift
Flash Consistency is very important, shot to shot. The consistency of every component is important: bullet weights, diameters, case wall thicknesses, and all the way down the list. We’re hoping to get more consistent behavior from a “match” or “benchrest” primer, and we’re paying more for it. I can tell you that some brands that aren’t touted as “match” are already consistent. That all comes from experience: try different primers, just respect the need to initially reduce the load for each test. I can also tell you that my notes tell me that the primer has a whopping lot to do with how high or low my velocity deviations plot out.
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