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I've pulled hundreds (thousands?) of 172's out of M118 match ammo then seated both Sierra 168's and 180's. Peak pressure's been a bit higher than normall M118 with the 168's and a lot higher with the 180's as jacket material on the military M2 172-gr. FMJBT bullet's softer than Sierras. These rounds were fired in Garands and M14MN's by service teams for years with great success. They've also been used in bolt action match rifles with the same results. High pressure and great accuracy. Be careful; wear safety glasses.
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