375 tejas (375 rum improved) 3100 fps muzzle velocity. I tested the 300 grn gameking in wet newsprint at 625 and 840 yards and then shot an elk at 59 yards. The elk was hit faceing me and hit low center left in the neck passing just above the heart hitting one lung, the liver, stomach and stopping in the off side ribs after penitrating for 27". The bullet jacket and core were found just two inches apart. Th elk dropped at the shot.