Non-corrosive, all weather primers deliver fast, dependable ignition under any shooting condition. I'm am not doing this again! 18,4. The only thing they changed was the primer. Out of stock. 0 Or a small primer pocket. These include the 308, 25-06 Remington, 300 Weatherby magnum, and finally the That said, I had heard the CCI 450's and #41's were basically the same so I was searching for differences and found these post's. Differences between primers are not equal - adjacent primers may be almost identical or much hotter/cooler. Fiocchi Large Rifle Primers. CCI Bench Rest Large Rifle Primers 1000/Box $199.99; Notify Me When Available; Brand: CCI; Item Number: 10 BK; CCI Large Rifle Primers 1000/Box $149.99; Notify Me When Available; . CCI 350 MAG Large Pistol Primers - 100 Ct. $22.99. 4 Accurate Arms Nitro 100 39 IMR, Co SR 4756. Your first post mentioned measuring the depth of the primers, and to my way of looking at the world, that . A different order between a few wouldn't surprise me in the least - especially if I did it all again with a different standard load. Both are roughly the same diameter. of extruded Hodgdon H4831. Interesting and informative article but it raises a couple questions in regards to Rem 6 1/2 that I've been unable to answer this far. What changed about the 6 1/2 to suddenly make it suitable only for low pressure cartridges? Ive had a slam fire. This is where the similarity ends. 0000027119 00000 n average of all the 4 groups above it. New. In that post, Hoogs mentions that even a CCI Large Rifle Magnum left a noticeable amount of unburnt powder in his 460 loads using W296. 0000076644 00000 n I cannot Almost forgot, Saeed has some data too http://www.accuratereloading.com/primer.html, ------------------"it is up to God to judge these terrorists; it is up to us to arrange their meeting" Gen. Norman Schwarzkopf, [This message has been edited by R-WEST (edited 02-09-2002).]. Rifle primers use tougher cups than pistol primers because the firing pin blow of rifles is usually harder than the firing pin blow . The Murom KVB-7 or KVB-7M should be the Wolf LR-M under a different name. Bullets; Primers; . Large Rifle = LR, Large Rifle Magnum = LRM, Large pistol =LP, Brand/type Power Average Range Std. 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. The pointer remains at the highest point of the shot. and brass. Apr 30, 2012. I have to wonder if the lack of hard data comes from the manufacturers not wanting to be held to some yahoo's feeble attempts to "prove they cheated me" with craptasticly bad "testing." I have Federal 210 primers(only 30 or so) but my local store also has Fed 210M primers. I think all of the flame pictures help illustrate that the variety of primer models do different stuff despite all primers being divided into just a few categories. His varmint bullets are absolutely fantastic. And get this, among ALL the primers tested, Rem 9M Magnum primers produced the lowest velocity, while Rem 9 LR (non-magnum) primers yielded the highest velocity. There's not a lot of variance in primer burn rate, only in quantity of powder to burn per primer. Federal Champion No. Federal Small Rifle Primers (Champion) 1000/Box $219.99; Notify Me When Available; Brand: Federal; Item Number: 205 BK; Well done gentlemen, Share the post "Ultimate Large Rifle Primer Shoot-Out 16 Types Tested". Seating the Large Rifle primers in a standard Large Pistol pocket may cause high primers . It has a 27-inch barrel, and we installed a Buy Reloading > Components > Primers - Gun City are the leading firearms experts in New Zealand. Air Rifle Accessories Air Rifle Bags Air Rifle Magazines Air Rifle Pellets Air Rifle Targets Air Rifles Co2 Air Rifles Hunting Air Rifles PCP Air Rifles Package Deals Target & Youth Air Rifles; Airsoft. 10. 0000053767 00000 n Now, I tend to read pressure signs from my primers first. I would like to state 0000002213 00000 n Out-of-Stock. Thank you very much for your efforts in providing this excellent article. Handloader Magazine does it every once in a while. The LRP is at least .008 taller than the LPP and has a significantly thicker cup (not shown on chart). Primer Size Chart . Different Primers On The Load. Which is better for muzzleloading, large rifle primers or 209 primers?There are many different types of muzzleloader ignit. Up to 6,000 psi difference just by changing primer brands. 0000027667 00000 n })(); To comment on a post, click Post Title or "Comment" Link. [ARCHIVED THREAD] - Primer burn rate(?) I usually buy several sizes and types of primers in lots of 5000, or 10,000 about once every year or so, as I do most of the reloading for out hunt group,Its not unusually to knock out a couple hundred cartridges in an evening with my dillion reloaders). Shotgun (209) CCI - 209. Copyright 1996-2023 AR15.COM LLC. Copyright 2000-2023 24hourcampfire.com, Inc. All Rights Reserved. the results of each group so you can compare that with others, as well as the group While working my way through college at a local gun shop, I advised a customer frustrated with his inaccurate handloads to try match-grade primers. 40,5. We are here to talk about primers. It stands to reason that such cusp cartridges, as I like to call them, would have . 0000027388 00000 n This is the home made tester. This is likely a matter of conjecture. Out of stock. (function() { Match event calendar and rifle competition accuracy training tips. I think I am going to try out some 450's now because I don't need to worry about slam fires in my 6.5x47L and they tend to be cheaper. Here are the results of a test done to determine the brisance of primers. The effects of different primers, normal and magnums, on a load have been discussed many times before. Weighing Primers: I did some test weighing and found the bench rest had virtually no variations. Ballistic Tips paired with 58.0 grs. trailer Does anyone have or know of a chart that lists primers from the hottest to the lightest? Let us start with Large Rifle Primers (LRP) vs Large Pistol Primers (LPP). RWS, CCI BR2, Federal 210M, Federal 210, Primer Testing Reference You will see a large difference if you go from a large rifle primer to a magnum primer so look at primer Brisance. _gaq.push(['_trackPageview']); Primer with Lowest ES/SD: Sellier & Bellot LR (12/3.1 fps) Winchester Reloading Large Rifle Magnum Primers. Winchester Large Rifle primers produced a standard deviation of velocity of 13 f.p.s. Fishing Bait Chart; Hunting Camo Patterns; Guns. The 7.6254mmR is a rimmed rifle cartridge developed by the Russian Empire and introduced as a service cartridge in 1891. I quit shooting them years ago because they made a mess of the bolt face even with new W-W brass. All the following groups were 3 shots at 100 yards, I wrote Three shot groups. I think we have enough data above to get some sort of idea of how If you used my "Benchmark/Baseline/95% Solution" load method, you'd know in a few shots if your new primer choice was hotter, cooler or the same. and .280 Rem., to name a few. 100. Keep to the lower end of reloading recommendations. Both for 6.5 CM. The shot is fired against a weight which in turn moves a pointer. Warning: Some published data calls for Large Rifle primers, though this brass was designed for, and most data is for Large Pistol primers. What is the pressure of a .44mag? things might turn out. NOTE: This data is reference only. 14 Likes. Size Large. In fact, from testing I and others have done, it almost seems to be capricious in nature, and therefore unpredictable as to which primer(s) might be the best alternatives to test when one is not giving satisfactory results. the 3 frozen overnight. Note the spreads. When I use the press the primers are seated harder.In your opinion would there be a difference in ES because of the seating mechanism? There really is no such chart. Out of stock. 0000077528 00000 n JavaScript is disabled. And, NO! I like the Wolf/Tula also because there a couple .0001s larger diam. Large rifle primers all appear to have the same cup thickness, no matter what the type. The ES/SD numbers will therefore be higher than is typical with five-shot strings. They used the same hulls, the same powder, powder charge, shot, shot charge, wad, and reloaded them on the same reloader. 547 0 obj <>stream In Winchester testing labs, primers are constantly and rigorously tested for consistency and sensitivity at temperatures and conditions far beyond the range of normal usage. Many handloaders think the 215 is still the hottest commercial rifle primer, but the CCI and Winchester magnum rifle primers are just as hot, if not a little hotter. Total group size variance (from best to worst) was 0.27. Firing pin strength also seems to be a definite factor. this with the others. I think it is fair to say that even the cooler primers work, providing the reloader has been careful to work up the loads and allows for volume, powder coatings and temperature at which the loads will be used. 0000001157 00000 n As an aside, a couple of years ago, shortmags.org published a list of primers from hottest to coolest. The first bit of useful trivia is that even though Small Rifle and Small Pistol primer pockets share the same depth specification, Large Rifle and Large Pistol primers do not. I also had no problem finding the thread in the archives. The Fora platform includes forum software by XenForo. TYPE OF PRIMER USED FOR PCS PER GRATING GRATINGS PER BOX BOXES PER CASE WEIGHT PER CASE; kg lb; V360157: Small Pistol 4,4 Boxer: . Thanks for the insight Rocky. Lots of people had good luck with them. Large rifle primers - which measure about .128 inches in height and .212 inches in width. This charge fills the case to about half I use cci 400 for my AR with great success ! Lauries findings will doubtless influence many hand-loaders who hope to produce more consistent ammunition, or achieve better accuracy. 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. 0000153414 00000 n I did not test the 210M. I finally had a primer fail, just last week. Hi Laurie, your comment re S&Bs slack fit raises my question. Sometimes I hand seat with a Sinclair tool and sometimes I seat using the press. I guess what my question boils down to is whether you think the range of primer performance you observed in your test here would carry over to other cartridges and powder selections. In bolt action rifles, not semis. Most basic there are large rifle primers. We had to stop our test at this stage, as our TRG-41 got The Test. Click Photo to read full test results in Target Shooter Magazine. They are very similar in their rate of propagation. Leupold LPS 3.5-14X scope in Sako mounts on it. . I learned Cci 400 and cci 550 are the same! .2232, 16 CCI 300 LP 3.18 Fiocchi 616 Shotshell Primers #209 | 1,000 Count $ 89.99. var _gaq = _gaq || []; All cases for each group Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. brass. Quest for Less Vertical Six Primer Types Tested at 500 Yards, Vertical Dispersion Test Six Primer Types Tested at 500 Yards, Primer Availability Report Wolf Primers Have Arrived, Primer Comparison Testing with 6 BRA at 500 Yards. were very even, but this was a limited lot and they are not widely available. CCI "APS" Large Pistol Primers Strip No. At the other end of the cartridge scale, 2.7 grains of Bullseye, a 148-grain lead wadcutter, and regular Small Pistol primers make up my .38 Special target ammo. once fired Weatherby brass and the Sierra 190-grain Match King bullet, molly CCI "APS" Large Rifle Primers Strip . 0000004445 00000 n Federal - 209A. 5.2-6.5 .4437, 3 CCI 250 LRM 5.66 0000054298 00000 n CCI BR2 Large Rifle Primer 100-Pack $ 13 99 13 dollars 99 cents. Match event calendar and rifle competition accuracy training tips. It is beyond question that switching primers can often improve (lower) ES/SD with a given load. Remington says the compound is the same as the 6, but with a thicker cup. 0000004308 00000 n I noticed they listed James Calhoon in that article. following primers in our possession. Gold Medal Centerfire Primer .205. 0000006474 00000 n Large Rifle = LR, Large Rifle Magnum = LRM, Large pistol =LP, Brand/type Power Average Range Std. Remington 7 - The only primer specifically marketed by Remington as "benchrest" quality. Since then almost every company has changed their primers. Any use of this content without express written consent is prohibited. 41 Rifle Primers - 100 Count. July 9, 2018. Dont know why they tested 210M primers as they seem to have gone the way of the passenger pigeon. _gaq.push(['_setDomainName', '.accurateshooter.com']); 0000015264 00000 n . Many shooters wrongly believe that BR or magnum models have thicker brass and are therefore 'tougher' than standard . There are a great many views on the subject, a few based on tests (including primer flame photography) but most apparently hearsay. Laurie Holland. 4.0-5.0 .2460, 11 CCI 200 LR 4.28 In the recent past I had been using BR-4's but have found the extra flash from #41's to give me slightly better groups at 1k. According to the same Internet sources, the Federal Gold Match Large Rifle Magnum primers (215M) are at the top of the list in terms of heat. In early black powder guns such as muzzleloaders, the primer was essentially the same chemical as the main propellant (albeit usually in a finer-powdered form), but poured into an external flash . Three shot groups. The cartridge remains one of the few standard-issue rimmed . Must add the Remington License Plate Frame to your cart, one per order. %%EOF chart, http://www.shootingtimes.com/ammo/ammunition_st_mamotaip_200909/, http://www.castingstuff.com/primer_testing_reference.htm. 30H32. Come join the discussion about performance, gunsmithing, troubleshooting, reviews, accessories, classifieds, and more! The Rem's had some very wild shots high and low. You are using an out of date browser. 0000000016 00000 n I have not measures themperhaps your not seating them fully? That article featured actual pressures changes in identical charge weights using Lake City Match brass, Sierra 168 grain Match Kings and 40.5 grains of IMR-4895. $7.99. We got them as PMC brand here until that company disappeared and when we get them nowadays, which is rarely, they use the Russian manufacturers name, Murom. Powder Burn Rate Chart; Primer Manufacturer Chart; Shellholder Chart; Bullet Abbreviations; User Loading Data. If the brass has a large. This testing was done to try and rank primers by power (brisance). 0000015039 00000 n 0000002349 00000 n 0000076375 00000 n Large rifle primers are 0.008" thicker than a large pistol primer. All Primers have a different Brisance. Add to cart. Rifle Calibers; Rifle Recoil Table; Handgun Caliber Chart; Handgun Recoil Chart; Caliber Comparisons; Ammo Size Chart; Shot Size Chart; . 0000003606 00000 n Another thing that is not in this test, but I have noted, is using a newsprint wad over the primer. %PDF-1.6 % It was such a tedious task that I abandoned my original plan of also doing pistol primers. xref $8.09. 3.2-5.6 .5171, 15 KVB 45 LP Russian 3.89 3.3-4.2 The following loads were shot in a Remington 700 chambered We thought of trying 3 different powders in each case JavaScript is disabled. 0000001584 00000 n This shows the pointer after a shot has been fired. is a double base powder, same bullet and brass. 0000001395 00000 n 5 Alliant e3 40 Ramshot True Blue. This is a retype after losing the original web page. My experience with the small rifle primers is just the opposite. coated. A good question Clive! rifle in its original stock, and installed a Leupold 6.5-20X scope in Ruger All the following loads were with the Berger 85 grain WSL. shoot them as a group, noting both the velocity and the accuracy, and compare Reloaders know that primers come in various designations: large pistol vs small pistol, large rifle vs small rifle, etc. So what's the difference? Great article/op. Thanks. Five round with the RWS primers hang fired, including 2 of Many handloaders think the 215 is still the hottest commercial rifle primer, but the CCI and Winchester magnum rifle primers are just as hot, if not a little hotter. Compare Compare Now. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. bullet, 55 grains of Reloader 19, in Winchester brass. The one published by "precision shooting" is posted at the following link: http://www.prfelr0.f2s.com/prfelr0/ click on primer 1 and primer2. Originally designed for the bolt-action Mosin-Nagant rifle, it was used during the late tsarist era and throughout the Soviet period to the present day. I made one up for rifles cartridges once, for my own use but the method I used isn't very scientific so it might not be valid. Remington - 209. All powder charges 4.1-6.0 .4300, 7 Remington 9 1/2 LR 4.75 3.7-6.25 .5679, 8 Fed Match GM210M 4.64 4.0-5.6 .3296, 9 Federal 210 LR 4.62 Do not use these charts for load development. The following loads were with 48 grains of VVN 550 powder, Heat of explosion per gram is similar as well. Does this indicate that one primer creates more pressure for about the same velocity or does this mean that some primers will withstand more pressure before showing signs of failure? Every serious hand-loader should definitely read the full test results to understand Lauries methodology and get all the details. The amount of work involved to do the same test as you conducted herein would be immense, which is probably why it has never been published together as a single body of work. My .338 RUM likes 100 grains of H1000 behind a 225-grain Nosler Partition bullet. And small rifle primers within the large. It is a standard factory rifle, that came with one Cases larger than that we normally used magnum primers. grains in, or a variety of combinations). $7.49. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. Interesting read, thanks! Clive. HTH, Dutch. The standard primer sizes for metallic centerfire (rifle and pistol) cartridges are small (.175" diameter) and large (.210" diameter). The following are with 80 grains of VVN 165, same bullet Freedom Is Never Free. $12.99. 0000015334 00000 n CCI No. The military imposes specific upper and lower sensitivity limits. And real standardization. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. On the one hand, it's a shame that we don't have better information about primers. GM205M. June 3rd, 2015 LR Primer Types Tested for Velocity, ES/SD, Group Size and More! Very interesting. . Three shot groups. CCI No. They can cause primer piercing within stout loads in .223 Remington applications. (6 1/2 cup thickness is.020, 7 . Large Rifle Primers; Shotshell Primers; Best Selling In PRIMERS. 0000010068 00000 n We thought we would run our own test, using all the different primers that we have here. Can you in. Large Rifle Primers Fed 215 WLRM CCI 250 Rem 9 M WLR F210 CCI BR2 CCI 200 Rem 9 Small Rifle Primers Fed 205 Rem 7 WSRM Fed 200 WSR CCI BR4 CCI 400 Rem 6 1/2 We used RWS match brass, 41.2 grains of VVN 140, and the Sierra 168 $5.03. http://www.serveroptions.com/ubb/Forum6/HTML/003275.html, [This message has been edited by Dutch (edited 02-08-2002).]. 0000028040 00000 n startxref load have been discussed many times before. And standard primers. However, I have seen or heard of many examples where the the primer that gave the best results might not have been the one that would have been intuitively picked based on its brisance. Large Rifle 5,3 Boxer: Rifle cartridges 5,652 R and cal. Check With Your Local Ammo. CCI 400 primers are designed for .22 Hornet, .218 Bee, .219 Zipper, and .222 Remington loads: NOT for .223 Remington! I hear ya. Another unexpected finding was that with all of the 17-round strings halted for 15 or more minutes for barrel cooling between shots 10 and 11, in over half of the strings shot 11 produced a (low) MV that was out of the range of the others and had to be discounted. But rules of thumb aren't perfect, and plenty of cartridges use charges from 55 grains to 65 grains .30-06, .270 Win. This is an important test, with significant findings. 22661. Most of the tests were of 100 or more primers. We re 2 Winchester WAALite 37 VihtaVuori N340. But if you cant spare the time right now, here are some highlights below: Primer with Lowest Velocity: Remington 9 M Magnum (2780 fps) This is interesting, according to this, Federal Gold Metal MatchKing 308 ammo should not be shot in a AR10 or 308 platform. I used the CCI large pistol magnums primers, and they performed just like rifle primers, they didn't peirce, or flatten, ignited the rifle powder just fine. Laurie Simply outstanding work and write-up as I always expect when you are involved! For this we would leave some loaded rounds in the freezer, and $79.99: 45 wks ago: Notify: Midway: CCI Large Rifle 7.62mm NATO-Spec Military Primers 34. 0000053794 00000 n hbbd```b``:"gI~ 2.l#0qd f$3|{ 4 Buy in store-Limit 2. The first "magnum" primer, the Federal 215 was designed for this very purpose. Dev . 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. A F215 in a .338 Win Mag load. You may not reproduce original text or photos without advanced permission in writing. #4. only the velocity is the average of the three groups above it. Primers labeled "match grade" cost 10 to 20 percent more than standard versions. Federal Champion Centerfire Small Rifle Primer - 100 Ct. No media assets available for preview. It has a Hart barrel #5 and a Cameron. FWIW, Dutch. Yeah yeah yeah, and matchkings won't kill a deer. $7.99. It will still fire, but they get fliers and open groups. One new winner* is announced every week! The following are the results of the 25-06 Remington, shot 10.3x60mm Rimmed LR Swiss 10mm Auto LP 11x59mm Rimmed LR French Gras 43 Mauser 17 Hornet SR The barrel was 24 inches long. I know this powder is far too slow for this application, but we thought His subsequent usage of Winchester Large Rifle standard lit all his powder. You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers. LR Primer Types Tested for Velocity, ES/SD, Group Size and More! 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; 2.6-3.5 .2090, 18 Fed Match GM150M 3.05 2.6-3.7 .2299. Ive since rerun the series with .308 Win Palma brass and small primers. It has no pistol primers, but if you look at the difference between the Remington 6 1/2 and 7 1/2, that's pretty typical of the difference between a standard rifle and a magnum rifle primer, though the material the 6 1/2 is stamped from is softer than the CCI of the same thickness and is known to leak gas if it is used in the .223. Any thoughts? These primers use a heavier, thicker cup to withstand the more intense small-cased rifle cartridges such as the .222 and .223 Remingtons. Therefore choose based on other factors, such as accuracy, low ES/SD, cost, cup hardness . I am using RCBS bench priming tool model 9460 link here: Strange that Lyman is a #2 and RCBS is #3 shell holder. Or if they are so constantly tweaking their formulas and mixes that the information we're looking for is too much of a moving target. 6,5 to 9,3 mm. 1 of the frozen BR2 rounds hag fired. Read more; CCI Aps Strips . brass. Rifle cartridges 5,652 R and cal. An old rule of thumb suggests the use of magnum primers any time the powder charge is 60 grains or more. did the bedding, and installed a Leupold 4-12 X scope in Leupold mounts. I wish I had the original range data, but it's long gone. It is relative to this set of tests and this tester. groups. The rifle has a 26-inch barrel. 2854 0 obj <>stream I did try a search but couldn't find anything apart from Chainsaws similar unanswered request back in August. in a Ruger Target model rifle. Three shot groups. 2847 0 obj <>/Filter/FlateDecode/ID[<17398BDBD67F214CBB3755FAA4BE7340><20967B39C4AB1349BB25AF309099C3A9>]/Index[2829 26]/Info 2828 0 R/Length 94/Prev 197341/Root 2830 0 R/Size 2855/Type/XRef/W[1 3 1]>>stream CCI 300 STD Large Rifle Primers - 100 Ct. No media assets available for preview. You will have match. How critical is the primer seating mechanism? A write-up will be done soon. 6mmBR.com is the best guide for 6mm BR Benchrest precision shooting, complete with 6BR FAQ, Reloading Data, Shooter Message Boards, Reader Polls, and Photo Gallery. t!.>%DBvv NRA Member..SWCA Member..Semi-Retired, But Not Dead Yet. 4 Comments. endstream endobj 2830 0 obj <. The only primer power chart I have ever seen published was in an NRA American Rifleman article in 1984. Large Rifle 5,3 Boxer. Large Rifle Magnum Match (LRM MATCH) Federal - 215m. [#11] Small pistol and rifle primers utilize a cup 0.175" in diameter, while large pistol and rifle primers measure 0.210" across. CCI primers offer the reloader clean, reliable ignition. $115.00. 6mmBR.com is the best guide for 6mm BR Benchrest precision shooting, complete with 6BR FAQ, Reloading Data, Shooter Message Boards, Reader Polls, and Photo Gallery. Rated 4.80 out of 5 $ 105.00. This is a great post and definitely deserves a sticky in the reloading section, Thanks for posting. _gaq.push(['_setAccount', 'UA-6323545-2']); 0000001728 00000 n No issues with the copper cup Wolf. 100%. Here are the primer types tested: 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. We thought we would run our own We have found the A final part of the test took a small number of the best performers and ran them in my primary 155.5gn Berger BT Fullbore / IMR-8208 XBR load without the MagnetoSpeed on to see what they did to groups without a load-retune against my usual CCI-BR4 load and to see if they would cope OK with 60,000 psi pressure. Three shot groups. Despite the nomenclature, this primer is appropriate for some extremely high pressure pistol cartridges, such as the .221 Fireball and the .357 Maximum. It is obvious that the thicker cups will withstand more pressure. LRM = Large Rifle Mag . To date, the best I approach have seen is that it is wise to have several primers that cover a range of brisance and simply test them empirically to find the one that works best with a particular load. firing 15 Nosler 130-gr. I just remembered people liking them. Thanks again for the excellent write-up and work! (Heat) and cause different powders to react differently.
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