Forum: .357 Magnum Heavy Bullet Handloads 
from the Speer Reloading Manual #12


 

The following information is taken from the Speer Reloading Manual #12.

Speer recommends these loads only be used in heavy-frame revolvers. The maximum overall cartridge length is 1.680 inches. All loads should use a very firm crimp to prevent bullet jump. Always start 10 percent below maximum and work up carefully in your particular gun.

Bullet: 200-grain Speer TMJ Silhouette, .357 diameter

Powder Charge, Max. Primer Velocity*

Powder Charge Primer Velocity T/C 10" Barrel
H110 14.5 grains CCI, magnum small pistol 1,392 fps 424 m/s 
WW 296 14.0 grains CCI, magnum small pistol 1,370 fps 418 m/s
AA #9 12.7 grains CCI, small pistol 1,369 fps 417 m/s
IMR4227 13.2 grains CCI, magnum small pistol 1,222 fps 372 m/s
Aliant 2400 12.0 grains CCI, magnum small pistol 1,336 fps 407 m/s

 


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