The first deer I ever killed was with a 250 Savage. Small WT buck in hills North of San Antonio. Factory ammo, I believe it was 90 gr. WW “silver tip”. That deer just stood there and stared after I shot it, for what seemed like an eternity but was probably only a few seconds. Then it dropped without taking a step. Weird, must have been the shock of the 3000 ft/sec bullet. That would have been 1972 ish.
I doubt if this helps much, it was a borrowed rifled, I never used one again.