unoffical entry, since I didn't have any callipers etc. I just happened to snap this pic of my target the other day.
Savage Mark II FV-SR
50 meters, CCI standard ammo. Bipod from brench rest, no brake/compensator, no stock modifications. Day 2 shooting with this particular rifle, sighting it in with a BSA sweet 22 scope, SWFA medium rings.
Squares are 1 inch. Bottom middle target group looks like .5 inch or thereabouts.

Savage Mark II FV-SR
50 meters, CCI standard ammo. Bipod from brench rest, no brake/compensator, no stock modifications. Day 2 shooting with this particular rifle, sighting it in with a BSA sweet 22 scope, SWFA medium rings.
Squares are 1 inch. Bottom middle target group looks like .5 inch or thereabouts.