Have a Arisaka 7.7x58 that Bubba reamed the shoulder area of the chamber so now the shoulder is way far forward. My 7.7 dies move the shoulder back when I attempt to neck size the brass. Tried 7.52x54R die but same thing. How can I neck size my brass without touching my "custom" shoulder?
P.S. The rifle is not rechambered in another caliber(i.e. 30-06) as it will not chamber other calieb ammo. Only the shoulder area was reamed forward- a true Bubba job.