I still have some Remington Power Piston 2.75, 12 gauge field loads. Remington started making those in 1965-66, Mine are from 1968 when I started duck hunting. Last year, buddy and I shot up some Mauser 1943 ammo from WWII. Only 1/3 of them fired and the report was good. The rest primers wouldn't ignite even when struck twice. No wonder they lost! LOL