357 Mag Winchester 145gr SilvreTip JHP

[RDub01]

Cartridge is from Ammo Manufacture:  Winchester 357 Mag
Muzzle Velocity; Advertised:  1290 fps
Actual Instrumental Velocity:   1156 fps  4" barrel  39°F
Muzzle Energy; Advertised:   536 ft/lbs
4" target circle.





Brass Make/Headstamp:  Winchester 357 MAG
Bullet Make/Weight/Contruction/Info: Winchester SilverTip 145grs. JHP .3556" dia.  .659" long
Actual Weight:  145grs.




Crimp diameter:
C.O.A.L.:   1.576"
Primer:   WSPM  brass color
Case: Nickel  1.280" long.  83.1grs w/primer



Powder Description/Positive ID/Type/Charge Weight: Flattened Ball;  16.5grs;  H-110/296








Note unusually small bullet diameter.

[The_Shadow]

Those look like they are a little light on the crimp for 296 powder...   The burn may be better with the heavier crimp and improve the velocity too.