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Reloading The .357 Magnum



Left to right:-- 160 gr. SWC+GC, 160 gr. JSP, .357 with JHP, .357 with JSP
.357 Armour Piercing, 160 gr. JHP, 125 gr. JHP

(WC= WadCutter, SWC= Semi-WadCutter, HP= Hollow Point, RN= Round Nose), SP=Soft Point, (JHP= Jacketed Hollow Point and if GC indicated, means Gas Check at bottom of lead bullet)

Loads for .357 Magnum:

(Note: These are near maximum loads, you should use 10% less to start.)(2009 Note: Some of these loads are from 1996 and in the passing years the powder companies have reduced their maximum loads particularly ones that have been around a long time like Unique. The loads are not updated yearly.)
(See note on Powders below or read all about various Powders.)
Bullets are .357" for jacketed and .358" for lead in diameter. Due to different barrel lengths, type of bullet, seating depth, primer type and other factors, you may not get near the FPS charted. It is just a guide and the reason you should start under these charges and work up.

(There are some loads for a 90 gr. cast, but bullet is unstable and not recommended)
(you can try 3.3 gr. Clays OR 5.0 gr. of TrailBoss)

(Note H110 & W296 are the same as of 2008 as is HP-38 & W231)
(IMR 4227 is same as H-4227 if made in Australia) ---------------------------------------- 110 grain JHP (Jacketed Hollow Point) Bullseye 7.0 gr. 1,343 FPS Bullseye 8.7 gr. 1,403 Max Unique 9.0 gr. 1,545 Unique 9.7 gr. 1,447 Max 2400 19.5 gr. 1,670 max Universal 7.5 gr. 1,465 start Universal 8.0 gr. 1,536 max HS6 10.6 gr. 1,612 HS6 11.5 gr. 1,776 max HP38/W231 7.9 gr. 1,414 HP38/W231 8.0 gr. 1,541 start HP38/W231 9.0 gr. 1,652 max No. 2 8.8 gr. 1,324 No. 5 10.8 gr. 1,340 231 8.8 gr. 1,575 H-4227 18.9 gr. 1,774 start H-4227 21.0 gr. 1,900 max W-296 22.0 gr. 1,992 start W-296 23.0 gr. 2,078 max Zip 7.7 gr. 1,373 start Zip 8.6 gr. 1,525 max True Blue 10.3 gr. 1,347 True Blue 11.3 gr. 1,475 True Blue 12.1 gr. 1,583 max ----------------------------------------- 125 grain Lead RNFP (.358") Unique 6.9 gr. ~ ~ light load Universal 4.8 gr. 1,046 Hodgdon start Universal 6.8 gr. 1,401 Hodgdon max HP-38 & W231 4.6 gr. 1,052 start HP-38 & W231 5.5 gr. 1,185 max Trail Boss 3.5 gr. 874 start Trail Boss 5.3 gr. 1,035 max Titegroup 4.0 gr. 1,055 start Titegroup 5.4 gr. 1,274 max Clays 3.5 gr. 984 start Clays 5.3 gr. 1,260 max Autocomp 6.5 gr. 1,311 start Autocomp 7.5 gr. 1,456 max ----------------------------------------- 125 grain JHP or JSP (Jacketed Hollow or Soft Point) Bullseye 8.4 gr. 1,550 FPS (this is very hot) Unique 9.6 gr. 1,585 MAX (not recommended) 2400 17.5 gr. 1,409 max Universal 7.1 gr. 1,394 start Universal 7.6 gr. 1,453 Max HS6 9.8 gr. 1,493 start HS6 10.0 gr. 1,542 HS6 10.9 gr. 1,629 max HP38/W231 7.0 gr. 1,267 HP-38 & W231 7.3 gr. 1,335 start HP-38 & W231 8.5 gr. 1,514 max Titegroup 6.8 gr. 1,425 start Titegroup 7.5 gr. 1,497 max No. 2 8.2 gr. 1,312 No. 5 10.1 gr. 1,322 No. 5 9.6 gr. 1,273 start No. 5 10.6 gr. 1,446 max No. 7 10.9 gr. 1,278 start No. 7 12.0 gr. 1,236 No. 7 12.1 gr. 1,453 max No. 9 14.1 gr. 1,370 start No. 9 15.6 gr. 1,567 max 231 8.1 gr. 1,460 H-4227 18.0 gr. 1,692 start H-4227 20.0 gr. 1,839 max W296* 18.5 gr. 1,800 * use magnum primers (standard is OK) W296 21.0 gr. 1,881 W296 22.0 gr. 1,996 MAX Zip 7.1 gr. 1,276 Zip 7.9 gr. 1,418 max True Blue 9.4 gr. 1,168 in Hornady JHP True Blue 10.4 gr. 1,226 is Max in Hornady JHP True Blue 11.3 gr. 1,262 +P for some bullets True Blue 11.5 gr. 1,472 max Enforcer 16.2 gr. 1,483 Enforcer 17.0 gr. 1,567 +P max for some bullets ----------------------------------------- 135 grain LRNFP (lead) Universal 4.8 gr. 986 Universal 6.5 gr. 1,314 max HP-38 & W231 4.1 gr. 946 HP-38 & W231 5.3 gr. 1,027 max Titegroup 3.5 gr. 906 Titegroup 5.2 gr. 1,186 max Clays 3.4 gr. 914 Clays 5.1 gr. 1,207 max ----------------------------------------- 135 grain Speer Gold Dot HP Unique 7.8 gr. 1,185 max PowerPistol 9.6 gr. 1,291 max 2400 16.0 gr. 1,377 ----------------------------------------- 140 grain JHP or JSP (Jacketed Hollow or Soft Point) Power Pistol 8.2 gr. 1,125 Power Pistol 9.5 gr. 1,288 max Unique 8.0 gr. 1,185 max 2400 15.1 gr. 1,298 max H-4227 16.2 gr. 1,541 H-4227 18.0 gr. 1,685 max W-296 & H110 17.1 gr. 1,597 W-296 & H110 19.0 gr. 1,762 max Universal 6.5 gr. 1,218 Universal 7.0 gr. 1,299 max HP-38 & W231 6.5 gr. 1,219 HP-38 & W231 7.7 gr. 1,378 max AA #9 14.0 gr. 1,305 AA #9 14.9 gr. 1,358 max Titegroup 6.3 gr. 1,262 Titegroup 7.0 gr. 1,376 max Enforcer 14.4 gr. 1,311 Enforcer 16.0 gr. 1,457 max True Blue 9.3 gr. 1,250 True Blue 10.3 gr. 1,389 max ----------------------------------------- 146-148 grain LWC (Lead Wad Cutter) (bullets seated deeper = higher pressures) (I don't recommend lead at over 900 FPS) (unless at least using a Gas Check) (with pure lead wadcutters, do not use hot loads) Bullseye 5.7 gr. 1,475 FPS (max - hot) Unique 6.4 gr. 1,465 (very hot - max) Universal 3.5 gr. 880 Universal 4.0 gr. 989 HP38 & W231 3.0 gr. 845 HP38 & W231 3.4 gr. 908 Titegroup 2.9 gr. 830 Titegroup 3.3 gr. 909 ----------------------------------------- 158 grain LSWC or LRN (Semi-Wad Cutter or Round Nose) (I don't recommend lead at over 950 FPS unless hard cast) (unless at least using a Gas Check or copper plated) Bullseye 4.8 gr. 939 max with plain lead bullet Bullseye 5.8 gr. 1,102 FPS MAX Clays 3.2 gr. 867 Clays 4.6 gr. 1,079 max Unique 6.0 gr. 1,034 Unique 6.8 gr. 1,295 max Universal 4.0 gr. 890 Universal 6.2 gr. 1,247 max Universal 6.7 gr. 1,297 max +P PowerPistol 7.4 gr. 963 TrailBoss 3.2 gr. 754 TrailBoss 4.2 gr. 865 max Titegroup 4.5 gr. 1,028 Titegroup 5.0 gr. 1,108 max No. 2 5.8 gr. 1,074 No. 5 8.2 gr. 1,239 No. 5 8.0 gr. 1,100 No. 5 9.0 gr. 1,220 max No. 7 9.1 gr. 1,041 start No. 7 10.1 gr. 1,183 max No. 9 11.2 gr. 1,104 No. 9 12.4 gr. 1,255 max HP38 & W231 3.9 gr. 846 HP38 & W231 3.4 gr. 796 HP38 & W231 5.0 gr. 1,109 max 2400 14.5 gr. 1,178 good load 2400 14.9 gr. 1,232 near max 231 6.7 gr. 1,275 +P max 231 6.1 gr. 1,075 (plated, actual in 7" bbl revolver) 296* 14.5 gr. 1,560 * use magnum primers ZIP 6.3 gr. 1,176 ZIP 7.0 gr. 1,307 max True Blue 8.8 gr. 1,176 True Blue 9.8 gr. 1,307 max (Enforcer load below is SWC + GC ) Enforcer 13.5 gr. 1,295 Hi=1360, Lo=1249, ES=110 ----------------------------------------- 158-160 grain JHP or JSP (Jacketed Hollow or Soft Point) Bullseye 6.8 gr. 1,250 FPS Unique 7.7 gr. 1,040 Unique 7.8 gr. 1,280 max PowerPistol 8.5 gr. 1,078 max 2400 14.8 gr. 1,265 2400 15.2 gr. 1,535 max Lil'Gun 17.0 gr. 1,254 max in one manual Lil'Gun 18.0 gr. 1,572 MAX Universal 5.8 gr. 1,026 Universal 6.3 gr. 1,133 max Universal 7.5 gr. 1,299 +P max Titegroup 5.4 gr. 1,135 Titegroup 6.1 gr. 1,229 max HP38 5.4 gr. 1,020 HP38 & W231 6.2 gr. 1,108 (as of 2008 HP38 & W231 are the same) HP38 & W231 6.9 gr. 1,220 max W231 6.1 gr. 1,013 (Actual in 7" bbl revolver) HS6 9.0 gr. 1,240 HS6 9.5 gr. 1,370 MAX H4227 14.5 gr. 1,402 H4227 16.0 gr. 1,520 max AA #2 6.9 gr. 1,088 AA #5 8.6 gr. 1,084 AA #5 9.7 gr. 1,256 max AA #7 10.5 gr. 1,139 max AA #9 12.4 gr. 1,202 start AA #9 13.8 gr. 1,367 max W296 & H110 15.0 gr. 1,418 W296 & H110 16.6 gr. 1,610 MAX a Commercial JSP load averages 1,503 fps True Blue 8.1 gr. 1,164 True Blue 9.1 gr. 1,262 max Enforcer 12.5 gr. 1,206 Enforcer 12.7 gr. 1,148 Enforcer 14.2 gr. 1,320 MAX ----------------------------------------- 180 grain JFP (Jacketed Flat Point) Bullseye 6.3 gr. 1,135 FPS Unique 7.0 gr. 1,125 H4227 12.7 gr. 1,247 H4227 13.0 gr. 1,240 H4227 13.7 gr. 1,308 max W296 & H110 13.0 gr. 1,352 W296 & H110 13.5 gr. 1,396 max Lil'Gun 13.0 gr. 1,279 Lil'Gun 15.0 gr. 1,422 max Titegroup 5.0 gr. 948 Titegroup 5.5 gr. 1,020 max 2400 12.5 gr. 1,300 AA No.5 8.0 gr. 1,040 AA No.7 8.2 gr. 980 start AA No.7 9.2 gr. 1,100 max AA No.9 10.8 gr. 1,059 start AA No.9 12.0 gr. 1,202 max 296* 14.1 gr. 1,380 max * use magnum primers Enforcer 11.4 gr. 1,075 Enforcer 12.7 gr. 1,190 max ----------------------------------------- 180 grain Lead + Gas Check ZIP 5.6 gr. 1,042 ZIP 6.2 gr. 1,158 max Lil'Gun 15.1 gr. 1,193 Lil'Gun 15.3 gr. 1,219 max True Blue 7.6 gr. 1,046 True Blue 8.4 gr. 1,162 max No.9 10.4 gr. 1,008 No.9 11.6 gr. 1,145 max No.7 8.3 gr. 938 start (LCFP, no gas check) No.7 9.2 gr. 1,067 max (LCFP, no gas check) ----------------------------------------- 187 grain Lead FN + Gas Check Enforcer 12.3 gr. 1,208 Hi=1244, Lo=1179, ES=65 (good load) ----------------------------------------- 200 grain LEAD (SWC or RN) 231 5.5 gr. 1,060 296* 12.4 gr. 1,335 max * use magnum primers -----------------------------------------
Discussion: Universal and Unique are good for lighter bullets, but if you want a slower burning powder, I suggest H-4227, Lil'Gun, W-296,2400, HS6 or No. 7. Several of these can also be used in rifle cartridges, so it's good to have for the magnum pistol loads and for rifle. I prefer the Unique or Universal as all purpose, and I also use them for .38 special, just less of it. If you have 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. - - - Below, are three loaded rounds. The armor piercing round was bought commercially (in the 70's). It has a steel core and will pierce an engine block.

For any loads over 900 FPS, I suggest using a jacketed bullet. Jacketed bullets create a bit more wear on the bore, but it's better than trying to wire brush out a bunch of lead build up. At the VERY least, use a copper Gas Check lead bullet or a copper plated bullet. There is also the issue of lead vapor to breathe if on an indoor range. Full copper plated bullets are a good idea for .357 loads instead of plain lead. Just depends on what kinds of loads you plan to shoot.



*
Bullseye, Unique and 2400 are products of Alliant (formerly Hercules) Powders.
Clays, Universal, HP38, HS6 and H4895 are products of Hodgdon Powders.
IMR TrailBoss are products of IMR (formerly DuPont) Powder Company.
No. 2, No. 5, No. 7, #2230, and #2460 are products of Accurate Arms Company
WMR, 760, 748, 231, 296 and 540 are products of Winchester, Components Div.
Note: Hodgdon as of 2009 controls IMR and Winchester Powders.

References: 2009 Hodgdon Website .357 Magnum loads
Accurate Arms Co. 1996 Reloading booklet - - Alliant Powder Co. Reloaders' Guide (1995) - - Hodgdon's Basic Reloaders Manual (1996) - - Speer Reloading Manual, #12 - - Winchester Reloading Components Manual, 14th edition - - Lyman Piston & Revolver Reloading Handbook, 2nd edition. - - VihtaVuori Oy Company, reloading booklet (1995) - - Numerous magazine articles on reloading special calibers and personal loads where noted.

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This page created on 2/1/96 by M.D. Smith and last modified on July 14, 2011 ©