Question I picked up my new Rifle that is a Ruger M-77 264 Winchester Magnum 26" Shilen barrel 1-9 twist. Can I fire the loads I developed in my other 264 in this one. I chamber the loads and they feed smooth. Do I have to start low and work up again to see how they do in this rifle?
It depends on how Standard/SAMMI you load.
If you vary your COL to load close to the lands... then just don't do it.
Best thing is to load for the rifle... That is what I do
Snake