I am reading up on what's best to use for 300BO pistol with 10.5" barrel in the AR platform and CCI #41 keeps coming up. From what I found, the #41 is made for gas rifles. LGS doesn't have #41 but they have CCI 450.
This will be for a 220gr jhp subsonic with H110 powder. Would the 450 be a better choice being I am using H110?