I was recently given a set of 270AI dies by my Son...... I've shot my 270win now for over 20 years, the last time I shot a group, just before the deer hunt last year, the rifle still shot a .47" group from the dead sled with a Sierra 130 BTS over a nearly max load of H4831SC, about 3100 fps. I didn't take the chrono. I was wondering if there is much to be gained by by reaming the chamber to match the dies? Unless there is at least 2-300fps I can't see doing it.... I haven't seen much data anywhere on the 270AI........... Any Help?
Thanks