Little more info for y’all, the Peterson brass I originally shot was virgin brass never shot. I have since shot it with the hand loads for my other rum which is Norma brass on its 3rd firing, same result. Velocity is ~120 fps slower out of the problem gun versus my other. Both 26” light palmas...
Question for y’all, just got a 300 RUM put together on a defiance action. After shooting the gun is showing slight ejector marks on the brass. This is both with factory loads and with minimum hand loads (88gr H-1000, Berger 205). Contacted barrel manufacturer and they claim this is common? Not...