The Firing Line Forums - View Single Post - 50gr bullet drop in rifle zeroed for 55gr?

Picher · May 25, 2014, 07:57 AM

I agree with Art about barrel vibration being the big difference in POI. Whippy barrels, shooting harder-recoil cartridges vibrate with greater amplitude than heavy ones.

I'd hazard a guess that the 55 would shoot within 1 MOA of a 50 grain bullet in a .223 or .22-250 free-floated barrel. My .223 Rem shoots 55 grain factory loads about 1" high and a half-inch left of the 50 grain zero.

May 25, 2014, 07:57 AM	#17
Picher Senior Member Join Date: December 14, 2004 Location: Maine Posts: 3,694	I agree with Art about barrel vibration being the big difference in POI. Whippy barrels, shooting harder-recoil cartridges vibrate with greater amplitude than heavy ones. I'd hazard a guess that the 55 would shoot within 1 MOA of a 50 grain bullet in a .223 or .22-250 free-floated barrel. My .223 Rem shoots 55 grain factory loads about 1" high and a half-inch left of the 50 grain zero.