01-24-2024, 07:14 AM
CCI 400 have really thin cups (.020") & are the most likely to ignite due to firing pin inertia in gas guns.
CCI 450s, CCI 41s & CCI BR4s all have thick cups (.025"). Federal GM205Ms (.225") & GM205MARs (unknown thickness but probably the same as GM205Ms) & Remington 7 1/2s (.025") are also good for gas gun ammo.
Winchester SR primers (.021") are only .001" thicker than the CCI 400s so I'd use them with caution.
CCI 450s, CCI 41s & CCI BR4s all have thick cups (.025"). Federal GM205Ms (.225") & GM205MARs (unknown thickness but probably the same as GM205Ms) & Remington 7 1/2s (.025") are also good for gas gun ammo.
Winchester SR primers (.021") are only .001" thicker than the CCI 400s so I'd use them with caution.
The trick is growing up without growing old. -- Casey Stengal