Richcotte
Hammer Time Executive member
So, here goes....
For years, if I was using brass in only one rifle (.308 Win) once fired in that rifle, I always neck sized and had really great results, typically 1/2 MOA or better. Then, everyone kept telling me that I should always FL resize and go back to SAAMI specs to ensure consistent loads, so I did. I still got consistent 1/2 MOA or better from that rifle until it started loosening up from age and has settled in around 3/4 MOA.
I recently started loading Peterson Long brass for my 300 WM. If I use a FL resizing die per manufacturer's instructions, I will simply resize the long brass down to SAAMI specs and negate the benefit of the design. So, I fiddled with the depth and was able to resize and bump the shoulder back very close to the virgin Peterson Long that I measured for reference.
Now, the question I'm struggling with is that my chamber is obviously longer than even the Peterson Long specs, so should I just neck size and run with the brass fireformed to the chamber?
For years, if I was using brass in only one rifle (.308 Win) once fired in that rifle, I always neck sized and had really great results, typically 1/2 MOA or better. Then, everyone kept telling me that I should always FL resize and go back to SAAMI specs to ensure consistent loads, so I did. I still got consistent 1/2 MOA or better from that rifle until it started loosening up from age and has settled in around 3/4 MOA.
I recently started loading Peterson Long brass for my 300 WM. If I use a FL resizing die per manufacturer's instructions, I will simply resize the long brass down to SAAMI specs and negate the benefit of the design. So, I fiddled with the depth and was able to resize and bump the shoulder back very close to the virgin Peterson Long that I measured for reference.
Now, the question I'm struggling with is that my chamber is obviously longer than even the Peterson Long specs, so should I just neck size and run with the brass fireformed to the chamber?