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When I shot M118 7.62 match ammo a lot in competition, I oft times brough my Lyman 310 nutcracker tool with a .308 Win. seating die. It was set to push back the bullet about 10 thousandths to break the seal between case neck and bullet. Not-so-good lots of M118 could be made very nice indeed after "cracking" that seal for use at 600 yards and further. Elevation shot stringing due to big muzzle velocity spreads drop down to reasonable amounts.
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