The .357's maximum average pressure is specified at 35,000 psi. Small Pistol Magnum Primers (SPM) are a key component for ammunition reloading. I've never used Longshot for 357 but a quick look at the Hodgdon site shows them using Winchester small pistol magnum primers. Federal makes both small pistol primers and small pistol magnum primers. But, this isn't the best powder for 900 f/s loads. Set Ascending Direction. Only show this user. This past weekend at a gunshow I was only able to locate small pistol magnum primers. This past weekend at a gunshow I was only able to locate small pistol magnum primers. are also differences. Show per page. . Rounds Case 5.000. Without knowing bullet weight and powder charge, I'd stick with that personally. Winchester® #209 Primers for Shotshells. I don't think you will have any problems if you stay away from maximum loads and if possible use a slower burning powder with the magnum primers. Of course, now i save my w296 and h110 for 300 blackout subbies and use tightgroup w/standard primers in my 357. but uses the regular small pistol primers. In the 357 mag data, there is a foot note which partially reads Do not reduce powder charges with 296 powder. 357 mag; 9mm luger; 44 mag; 45 colt; 25 auto; Shop all pistol brass; primers. Primer Size: 357 Magnum: 357: SPM: 357 Maximum: 357: SPM: 35/50 Cal BMG Primer. Use a .356″ for lead bullets. Speer list max speeds using lead bullets of under 1,100 fps to prevent . Primer size (large, small) Some cartridges require a large pistol primer (45acp, 44 special, 44 magnum, …) while others require a small pistol primer (9mm, 38 special, 357 magnum, …). RWS Load Data. with these powders. Hornady Load Data. Small Pistol Magnum Primers (SPM) are a key component for ammunition reloading. Sort By. I have been reloading for about 6 months and only have experience reloading .45 ACP. Refine by Use: Reloading Package Quantity 100. Due to different barrel lengths, type of bullet . As a result today's CCI primers are more sensitive, easier to seat and more compatible with progressive and automated loading equipment than ever before. RWS Load Data. Federal® Centerfire Primers. . Refine by Product Family: Mil-Spec No. When the higher pressure standard was used, nearly all US ammo manufacturers used small Standard rifle primers in their factory 357 Mag loads. IMR Smokeless Powder - Rifle. Some times you can fix this by coating the bullets with Lee Liquid Alox on top of the factory lube, before loading, just let it dry well. Refine by Product Family: Mil-Spec No. Sierra Load Data. Remington Load Data. 9 Accurate Solo 1000 Accurate TCM Alliant Powder 2400 Alliant Powder 300-MP Alliant Powder BE-86 Alliant Powder Blue Dot Alliant Powder Bullseye Alliant Powder Power Pistol Alliant Powder Sport Pistol Alliant Powder Unique Hodgdon 700-X Hodgdon CFE Pistol Hodgdon Clays Hodgdon H110 Hodgdon H4227 . The mag primer does put out a little more burn for this situation. pressures may have been even higher; and if you shoot one of those old .357 Mag. Winchester also makes small pistol primers for the .357. Primer type (Regular, Magnum, Multi-Purpose) It is obvious to most experienced Handloaders though, that the lead bullet 357 Magnum load data certainly does not demand Magnum ignition with the powders listed. In addition, rifle cartridges and components from RWS stand for the highest quality standard and first-class precision. ALL Accurate 4100 Accurate No. Hodgdon® Smokeless Powder. Especially if loading light for caliber bullets (90gr. The main difference in loading for this and the 9mm is crimping. I have been reloading for about 6 months and only have experience reloading .45 ACP. Note : You may use the 38 Special die set to reload for the 357 . You can use either one in reloading the .357. dm440c Well-Known Member Joined Dec 19, 2012 . In most of the "Magnum" calibers and in some standard caliber loadings, it depends on what you are feeding them. However, in Handloader No. You go right ahead and disregard. Remington Load Data. Thanks for you open mindedness and willingness to learn from somebody who has been at it for 30+ years. I would add here that Hodgdon published data uses srmp for all their 300blackout, but I have been using the CCI #41. I've always used small pistol primers in the .357 Mag and .38 Special with good results and no ignition problems except with some of the slow burn ball powders (WC820, AA9 and H110) in the .357. small rifle; small pistol; large rifle; large pistol; Shop all primers; rifle brass. Pistol primers side by side: 44 magnum (large pistol primer) and 357 magnum (small pistol primer) 207, Brian Pearce did an excellent job of showing that magnum loads in his .357, even using H-110, actually perform better with standard primers. - - - Below, are three loaded rounds. Alliant has load data for two 158 grain bullets on their web site. The mix of components interact in very unpredictable ways. Berger Load Data. A lot of people believe that loading the .357 Mag. 207, Brian Pearce did an excellent job of showing that magnum loads in his .357, even using H-110, actually perform better with standard primers. 24 nosler; 243 wssm . The case volume of a .357 case is also larger than a .38 special. Search results for: '357 primers and gun powder' 12 Items . .357/.38 will be my first experience reloading a wheelgun caliber. Looking at avg FPS and SD, no huge difference in performance using small rifle primers for 357 magnum reloading Next Accuracy TRR8 revolver, FED 200 load - accuracy was on par with my normal ability Using any of the 3 small rifle primers - my groups were consistently 4-5x LARGER, and no real grouping, they were all over the place. WhistlerSWE, Back in the mid-90's SAAMI lowered the chamber pressure standards from 41,500 psi to 35,000 psi for 357 Mags. In any event, you can't go wrong "working up" with the Mag primer, it's just a little bit of overkill for the lead load data for sure. Ambient temp - 38f. Jan 17, 2017. You will need to find the right powder and primer combo that works for you. The armor piercing round was bought commercially (in the 70's). 34/7.62 Primer. However, in Handloader No. An auto cartridge headspaces on the mouth of the cartridge, so you basically just remove the bell from the case mouth. Good Luck. (See note on Powders below or read all about various Powders .) requires the use of magnum primers. You will need to find the right powder and primer combo that works for you. Magtech® reloading components are made under the same quality standards as our technologically advanced factory loads, resulting in top-quality products that you can depend on. This load consisted of 14.4 grains of Alliant 2400, Remington 5 1/2 small pistol magnum primers, and Speer 158 grain JHP bullets. lead semi-wadcutter bullet and a large pistol primer, you know you've . Since its introduction, the .357's ballistics have gradually diminished. Winchester® Smokeless Ball Powder. You should also make sure there's no debris or other obstruction lodged inside the case. Refine by Use: Reloading Package Quantity 100. Loads for .357 Sig: (Note: These ARE MAXIMUM loads, you should use 10% less to start.) As mentioned, if you are loading slow Magnum pistol powders like 296/H110 then it is recommended to use the Magnum primer. These primers are NOT recommended for loading high pressure loads such as 357 Mag, 357 Sig or 40 S&W. Yea, you are correct, you go ahead and use standard Remington primers in high pressure rounds if you want. Refine by Product Family: Mil-Spec No. The pistol rounds usually are ;oaded with a faster burning powder including some of the shotgun powders that are used in reloading. . Winchester® #209 777 Primers - 100-Pack. You can use either one in reloading the .357. Magnum Rifle Primer Mil-Spec No. These loads must be used exactly as shown. The 357 Magnum is a very versatile round. Nosler Load Data. I expected more velocity based on Quickload and Hornady data. In addition, rifle cartridges and components from RWS stand for the highest quality standard and first-class precision.RWS primers are subject to demanding . I tumble them before loading so that I can easily inspect and weed out any cracked or otherwise damaged brass. loads with a 158-gr. Bullet size is .355″ (9mm) (jacketed) in diameter. But, this isn't the best powder for 900 f/s loads. 7 Accurate No. The new 357 was too long for the 38s chamber, and helped prevent these hot loads being fired in weaker revolvers. It has a steel core and will pierce an engine block. Unless you are loading with one of the so-called magnum powders such as Winchester. Primer Size: 357 Magnum: 357: SPM: 357 Maximum: 357: SPM: At the range, I immediately liked the feel of the recoil- seemed even and more smooth somehow than the H-100 that I normally use. CCI® Primers - Per 1000. Depending on what cartridge you are reloading, you need to buy the proper size primer for that application. Speer Load Data. I have seen plenty of reloading data using small pistol primers but not small pistol magnum primers. The Hodgden load data uses magnum primers for all their 357 loads. 35/50 Cal BMG Primer. Find here common products in this primer size. A magnum primer really comes into its own when you load a good size rifle round that requires slow burning powder. Bullets are .357″ for jacketed and .358″ for lead in diameter. Alliant now, for the last 10 years, has only recommended SP Mag primers for 357 loads with 2400, so any recent data is with Mag primers. Brisience (spark) is only one factor to consider. Refine by Package Quantity: 1000 . CCI Primers are continuously tested and improved. . Nosler Load Data. When the primer ignites, it shootes a high intensity flame through the flash hole (hole between primer pocket and case interior) which ignites the powder charge. Lapua Load Data. Magnum primers are hotter and tend to ignite powder in a different pattern than standard primers. Magnum Rifle Primer Mil-Spec No. I had the Dillon XL-650 setup for 357 Magnum, so I thought I'd give this powder a try. Most 38 sp bullets will have a crimp groove. It was ugly. That is not always true. Refine by Package Quantity: 100 1000. Cup thickness, cup size, composition of compound and flame temp. Alliant Powder® Smokeless Powders. A large number of Olympic victories prove the excellent quality of RWS ammunition, which many well-known and competent top shooters rely on. Find products with excellent quality and value here. 5 Accurate No. 35/50 Cal BMG Primer . Alliant now, for the last 10 years, has only recommended SP Mag primers for 357 loads with 2400, so any recent data is with Mag primers. Small Pistol Primer (1½NATO) 9X19MM (NATO) 100 50 5.000 PR-SPM Small Magnum Pistol Primer (5½) .223 REM, .30 Carabina, .357 MAG, .454 CASULL, .45 GAP 100 50 5.000 PR-LP Large Pistol Primer (2½) .44-40 WIN, .44 REM, .44 SW SPL, .45 AUTO, .45 COLT 100 50 5.000 PR-SR Small Rifle Primer (7½ ) 5,56x45mm (NATO / M193 / M196 / SAT / OTM / Blank), .300 BLK The relatively thin-walled cartridge cases must remain intact when a round is fired. Winchester® Rifle Primers. a lightweight .357 or older gun, you may want to start with 13% less than amounts listed above (but not where it says "start" load), and work up to the full loads. The pressures you are dealing with on .357 Magnum pistol cartridges range into 35,000 PSI. Current factory ammo delivers substantially less performance, i.e., velocities are 150 to 200 fps lower. With Mag primers, I would . Primers are typically sold in packs of 100, or bricks of 1000 (10 packs of 100). You can load anything from light target loads to large game hunting loads. A large number of Olympic victories prove the excellent quality of RWS ammunition, which many well-known and competent top shooters rely on. .357/.38 will be my first experience reloading a wheelgun caliber. This load consisted of 14.4 grains of Alliant 2400, Remington 5 1/2 small pistol magnum primers, and Speer 158 grain JHP bullets. Looking at avg FPS and SD, no huge difference in performance using small rifle primers for 357 magnum reloading Next Accuracy TRR8 revolver, FED 200 load - accuracy was on par with my normal ability Using any of the 3 small rifle primers - my groups were consistently 4-5x LARGER, and no real grouping, they were all over the place. Refine by Product Family: Mil-Spec No. Description Small Magnum Pistol Primer (5½) Usage.223 REM, .30 Carabina, .357 MAG, .454 CASULL, .45 GAP. 357 Sig; 38 Super; 32 Caliber(.312-.313) 44-40(.427) Bulk Rifle Bullets. Midsouth Shooters offers an extensive selection of reloading and shooting supplies, tools, and equipment. Good Luck and have fun. Good Luck and have fun. Lee 38 Special / 357 Magnum Pistol Breech Lock 3-Die Set includes colored spline drive breech bushings for easy die identification, Carbide Full Length Sizing Die, Bullet Seating Die, Powder Thru Expanding Die, Universal Shell Holder, Powder Dipper and Instructions/Load Data. I fired these magnum loads from my Ruger GP-100 357 Magnum 6″ stainless revolver. . - 130gr.) RWS 5333 Large Rifle Magnum (LRM) Primers. Berger Load Data. Hornady Load Data. PR-LP . So if it were me, I'd use magnum primers - but people have used spp and srp. 34/7.62 Primer Mil-Spec No. Box Case 50. Load data for caliber "RWS 4047 Small Pistol Magnum (SPM) Primers". I have seen plenty of reloading data using small pistol primers but not small pistol magnum primers. From the start to finish everything to you need to know about reloading 357 Magnum.https://www.patreon.com/user?u=10462972 6MM(.243) . The 357 magnum is simply a lengthened 38 Special cartridge. Related search terms 357 158 gr Bullets Jacketed Hollow Point35 brass . CCI Small Pistol Magnum Primers #550 in stock. Smith and Wesson R8 (5 inch barrel) Using Hornady 125g XTP hollow point. A deduction in powder charge or change in components can cause dangerous pressures. Speer Load Data. True, but, as a beginning reloader it is best to use what the manual suggests; there are reasons for using a magnum primer for magnum loads, and proper powder ignition is prolly the main one. Thanks for you open mindedness and willingness to learn from somebody who has been at it for 30+ years. Historically .357 Mag. 34/7.62 Primer Mil-Spec No. At the range, I immediately liked the feel of the recoil- seemed even and more smooth somehow than the H-100 that I normally use. When powder burns, it can generate multiple peak pressure points over time. Lapua Load Data. .

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