Use magnum primers and a heavy crimp. ALL Accurate 4100 Accurate No. Without knowing bullet weight and powder charge, I'd stick with that personally. Most 38 sp bullets will have a crimp groove. 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. loads with a 158-gr. . Sort By. but uses the regular small pistol primers. .357/.38 will be my first experience reloading a wheelgun caliber. CCI Primers - Per 1000. RWS Load Data. 24 nosler; 243 wssm . Hornady Load Data. Especially if loading light for caliber bullets (90gr. Magnum Rifle Primer Mil-Spec No. requires the use of magnum primers. Hodgdon Smokeless Powder. Midsouth Shooters offers an extensive selection of reloading and shooting supplies, tools, and equipment. 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. Berger Load Data. 357 mag; 9mm luger; 44 mag; 45 colt; 25 auto; Shop all pistol brass; primers. I would recommend using the magnum primers with powders such as 2400 and H110, and regular primers for light loads using powders like Unique, Bullseye, and the like. Alliant has load data for two 158 grain bullets on their web site. Berger Load Data. Bullet size is .355 (9mm) (jacketed) in diameter. Loads for .357 Sig: (Note: These ARE MAXIMUM loads, you should use 10% less to start.) 5 Accurate No. 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. You will need to find the right powder and primer combo that works for you. I fired these magnum loads from my Ruger GP-100 357 Magnum 6 stainless revolver. 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. Refine by Package Quantity: 1000 . 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. Refine by Use: Reloading Package Quantity 100. Nosler Load Data. 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. Speer Load Data. 34/7.62 Primer Mil-Spec No. Sierra Load Data. 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. Cup thickness, cup size, composition of compound and flame temp. In addition, rifle cartridges and components from RWS stand for the highest quality standard and first-class precision.RWS primers are subject to demanding . Magnum primers are hotter and tend to ignite powder in a different pattern than standard primers. Thanks for you open mindedness and willingness to learn from somebody who has been at it for 30+ years. Unless you are loading with one of the so-called magnum powders such as Winchester. Good Luck. 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. dm440c Well-Known Member Joined Dec 19, 2012 Once Fired Brass, New Brass. Primer Size: 357 Magnum: 357: SPM: 357 Maximum: 357: SPM: The Hodgden load data uses magnum primers for all their 357 loads. CCI Mag primer. From the start to finish everything to you need to know about reloading 357 Magnum.https://www.patreon.com/user?u=10462972 In most of the "Magnum" calibers and in some standard caliber loadings, it depends on what you are feeding them. Description Small Magnum Pistol Primer (5) Usage.223 REM, .30 Carabina, .357 MAG, .454 CASULL, .45 GAP. Find here common products in this primer size. The new 357 was too long for the 38s chamber, and helped prevent these hot loads being fired in weaker revolvers. Rounds Case 5.000. Brisience (spark) is only one factor to consider. Northeast Reloading is your source for bulk Hornady Sierra, Berry's. Low prices, fast shipping on all products. 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. Federal makes both small pistol primers and small pistol magnum primers. . These loads must be used exactly as shown. Northeast Reloading is your source for bulk Hornady Sierra, Berry's. Low prices, fast shipping on all products. I had the Dillon XL-650 setup for 357 Magnum, so I thought I'd give this powder a try. I have been reloading for about 6 months and only have experience reloading .45 ACP. . Small Pistol Magnum Primers (SPM) are a key component for ammunition reloading. However, in Handloader No. Box Case 50. Conventional wisdom has long told us to use standard primers for standard loads and magnum primers for magnum loads, and there's plenty of that reloading data available. It is just a guide and the reason you should start under these charges and work up. 34/7.62 Primer. Refine by Product Family: Mil-Spec No. .357/.38 will be my first experience reloading a wheelgun caliber. Winchester Rifle Primers. This practice has fallen by the wayside over the years. 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. Primer type (Regular, Magnum, Multi-Purpose) The 357 magnum is simply a lengthened 38 Special cartridge. WhistlerSWE, Back in the mid-90's SAAMI lowered the chamber pressure standards from 41,500 psi to 35,000 psi for 357 Mags. When powder burns, it can generate multiple peak pressure points over time. Original .357 Magnum specs touted the muzzle velocity for a 158-grain, lead SWC bullet of more than 1,500 fps from an 8-inch barrel. Pistol primers side by side: 44 magnum (large pistol primer) and 357 magnum (small pistol primer) Refine by Package Quantity: 100 1000. With Mag primers, I would . Load data for caliber "RWS 4047 Small Pistol Magnum (SPM) Primers". Alliant Powder Smokeless Powders. pressures may have been even higher; and if you shoot one of those old .357 Mag. Bullets are .357 for jacketed and .358 for lead in diameter. The Lee load data has the same load info. Speer list max speeds using lead bullets of under 1,100 fps to prevent . You should also make sure there's no debris or other obstruction lodged inside the case. This past weekend at a gunshow I was only able to locate small pistol magnum primers. Good Luck and have fun. The case volume of a .357 case is also larger than a .38 special. Thanks for you open mindedness and willingness to learn from somebody who has been at it for 30+ years. Only show this user. Conventional wisdom has long told us to use standard primers for standard loads and magnum primers for magnum loads, and there's plenty of that reloading data available. The mix of components interact in very unpredictable ways. Winchester also makes small pistol primers for the .357. I tumble them before loading so that I can easily inspect and weed out any cracked or otherwise damaged brass. 34/7.62 Primer Mil-Spec No. Current factory ammo delivers substantially less performance, i.e., velocities are 150 to 200 fps lower. 11 FS Accurate No. In addition, rifle cartridges and components from RWS stand for the highest quality standard and first-class precision. The relatively thin-walled cartridge cases must remain intact when a round is fired. A magnum primer really comes into its own when you load a good size rifle round that requires slow burning powder. Primers are typically sold in packs of 100, or bricks of 1000 (10 packs of 100). Lapua Load Data. 2 Accurate No. Small Pistol Primer (1NATO) 9X19MM (NATO) 100 50 5.000 PR-SPM Small Magnum Pistol Primer (5) .223 REM, .30 Carabina, .357 MAG, .454 CASULL, .45 GAP 100 50 5.000 PR-LP Large Pistol Primer (2) .44-40 WIN, .44 REM, .44 SW SPL, .45 AUTO, .45 COLT 100 50 5.000 PR-SR Small Rifle Primer (7 ) 5,56x45mm (NATO / M193 / M196 / SAT / OTM / Blank), .300 BLK 35/50 Cal BMG Primer . Refine by Package Quantity: 100 1000. Winchester also makes small pistol primers for the .357. Powders .) Historically .357 Mag. 'small magnum pistol primers' Search results for: 'small magnum pistol primers' 2 Items . Hornady Load Data. The .357's maximum average pressure is specified at 35,000 psi. 7 Accurate No. So if it were me, I'd use magnum primers - but people have used spp and srp. 357 Sig; 38 Super; 32 Caliber(.312-.313) 44-40(.427) Bulk Rifle Bullets. Find here common products in this primer size. The main difference in loading for this and the 9mm is crimping. 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. Find products with excellent quality and value here. 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 . An auto cartridge headspaces on the mouth of the cartridge, so you basically just remove the bell from the case mouth. LVLAaron said: I admittedly do not much experience reloading .357 mag. This past weekend at a gunshow I was only able to locate small pistol magnum primers. They utilize modern non-corrosive and non-mercuric initiator mixes for the cleanest burn possible. 35/50 Cal BMG Primer. Small Pistol Magnum Primers (SPM) are a key component for ammunition reloading. lead semi-wadcutter bullet and a large pistol primer, you know you've . While large, the important thing is that firearms constructed to SAAMI standards are designed to withstand the 35,000 PSI pressure peak. . 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. Jan 17, 2017. The 357 Magnum is a very versatile round. Remington Load Data. RWS 5333 Large Rifle Magnum (LRM) Primers. 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. A large number of Olympic victories prove the excellent quality of RWS ammunition, which many well-known and competent top shooters rely on. 4.5 grains at 850 to 6 grains at 1100 seems to be the range. Depending on what cartridge you are reloading, you need to buy the proper size primer for that application. Due to different barrel lengths, type of bullet . 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. Show per page. - 130gr.) Rounds Box 100. As mentioned, if you are loading slow Magnum pistol powders like 296/H110 then it is recommended to use the Magnum primer. I expected more velocity based on Quickload and Hornady data. 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. Refine by Product Family: Mil-Spec No. Refine by Package Quantity: 1000 . Primer Size: 357 Magnum: 357: SPM: 357 Maximum: 357: SPM: - - - Below, are three loaded rounds. Winchester #209 777 Primers - 100-Pack. . But, this isn't the best powder for 900 f/s loads. You can load anything from light target loads to large game hunting loads. Speer Load Data. 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. Smith and Wesson R8 (5 inch barrel) Using Hornady 125g XTP hollow point. . are also differences. Remington Load Data. Federal Centerfire Primers. Of course, now i save my w296 and h110 for 300 blackout subbies and use tightgroup w/standard primers in my 357. You will need to find the right powder and primer combo that works for you. Show 35/50 Cal BMG Primer. When the higher pressure standard was used, nearly all US ammo manufacturers used small Standard rifle primers in their factory 357 Mag loads. I have seen plenty of reloading data using small pistol primers but not small pistol magnum primers. Winchester Smokeless Ball Powder. 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. Good Luck and have fun. . Winchester 296. Ambient temp - 38f. Lapua Load Data. Note : You may use the 38 Special die set to reload for the 357 . Related search terms 357 158 gr Bullets Jacketed Hollow Point35 brass . In the 357 mag data, there is a foot note which partially reads Do not reduce powder charges with 296 powder. I have been reloading for about 6 months and only have experience reloading .45 ACP. It has a steel core and will pierce an engine block. This load consisted of 14.4 grains of Alliant 2400, Remington 5 1/2 small pistol magnum primers, and Speer 158 grain JHP bullets. The pistol rounds usually are ;oaded with a faster burning powder including some of the shotgun powders that are used in reloading. Once upon a time, the loading manuals recommended small rifle primers for the .357 Magnum cartridge. Refine by Use: Reloading Package Quantity 100. Use a .356 for lead bullets. IMR Smokeless Powder - Rifle. A deduction in powder charge or change in components can cause dangerous pressures. Magnum Rifle Primer Mil-Spec No. 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. A lot of people believe that loading the .357 Mag. 19.6 grain charge yielded ~1100 fps. The armor piercing round was bought commercially (in the 70's). Federal is using true 9mm and not .38 or .357 diameter. Nosler Load Data. Sierra Load Data. CCI Small Pistol Magnum Primers #550 in stock. It was ugly. The mag primer does put out a little more burn for this situation. 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. . A large number of Olympic victories prove the excellent quality of RWS ammunition, which many well-known and competent top shooters rely on. 35/50 Cal BMG Primer . You go right ahead and disregard. small rifle; small pistol; large rifle; large pistol; Shop all primers; rifle brass. 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. The pressures you are dealing with on .357 Magnum pistol cartridges range into 35,000 PSI. PR-LP . Since its introduction, the .357's ballistics have gradually diminished. That is not always true. 6MM(.243) . Set Ascending Direction. 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, ). You can use either one in reloading the .357. 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. This load consisted of 14.4 grains of Alliant 2400, Remington 5 1/2 small pistol magnum primers, and Speer 158 grain JHP bullets. But, this isn't the best powder for 900 f/s loads. Refine by Product Family: Mil-Spec No. You can use either one in reloading the .357. with these powders. However, in Handloader No. Refine by Product Family: Mil-Spec No. (See note on Powders below or read all about various Powders .) I would add here that Hodgdon published data uses srmp for all their 300blackout, but I have been using the CCI #41. RWS Load Data. Federal makes both small pistol primers and small pistol magnum primers. Winchester #209 Primers for Shotshells. Search results for: '357 primers and gun powder' 12 Items . . It was ugly. Due to different barrel lengths, type of bullet, seating depth, primer type and other factors, you may not get near the FPS charted. CCI Primers are continuously tested and improved. 34/7.62 Primer. I've never used Longshot for 357 but a quick look at the Hodgdon site shows them using Winchester small pistol magnum primers. I have seen plenty of reloading data using small pistol primers but not small pistol magnum primers.