Thanks for the good info. I just got home and checked some fired cases and unfortunately the bullets will slide right in so I guess that's not my problem. Just out of curiosity I competed them to my 300 WBY ( also a rem 700) and got similar measurements.
Neck ID after sizing-.303"
Neck ID after...
Thanks everyone for the help.
Your statement about 71 grains of H4831 and 190 gr SMK shooting over 3000 ft/sec is one thing that concerns me. I have read many similar statements and my velocities aren't even close to 3000. Also I said I'm using 4831, I meant 4831 SC but may switch to 4831 to see...
First off I apologize I couldn't find the thread I originally referenced on this topic.
I had a gun built last year using rem 700 receiver and 26" shilen contour 7 barrel. On recommendation of gunsmith I went to 30-338 over 300 why mag which I have been reloading for over 20 years. I have spent...