These were some bulk blems being sold a few years back. Copperhead solid copper 55gr BT. I acquired these bullets from my father who no longer reloads. He never loaded them, and load data online is sketchy at best. Being copper they are considerably longer than lead core 55gr FMJ-BT's. Which has me leaning towards a longer COL of like 2.250" with a reduced charge weight. Then again, I don't really know. Junk drawer to be forgotten, or load em and send em?