What velocity are you getting out of these loads? That will let you know for sure if you have a "weak" load. Low velocity plus a fresh 17lb factory recoil spring can easily lead to stovepipes. I would run your loads across a chrono and start from there. You can either bump up your powder charge or get a lighter weight recoil spring. Lowering your OAL will also increase velocity (and pressure) without increasing your powder charge. 1.16 is a bit on the long side. I would start with the free option and try lowering OAL to 1.10 - 1.13 and that may very well solve your issue.
Reply With Quote