We do most of our offhand shooting @75 yds.It represents the bulk of our offhand shots in the hunting fields.Any further while hunting and theres usually time for some sort of rest.
The 3 rifles I practice the most offhand work with are........in order of usage.
1-Savage 110 in 22-250(worked over pretty good).Straight 6X scope,shooting reloads.
2-Another 110,SS 30-06(action bedding...fiberglassed,internal forearm reinforced...otherwise,stock).Straight 3X scope,mainly cast bullets(ALOT),switching to 150's for deer.
3-541 Remmy,skinny brrl with a sweet older Burris 4X.
The first two can keep pretty much all shots in the bttm of a beer can @75.The .22 can't/dosen't because I'm too cheap to buy quality ammo,so it regularly sends flyers.These are all set up for hunting......triggers are around 3#.....just solid hunting rigs.Once in awhile (regular enough) when really buckling down with lots of practice.....the 22-250 will see offhand,3 shot cloverleafs a little over an inch.
I like skinny brrls and real fast handling bolt rifles with lower pwrd scopes.....which is sort of opposite of the equip required for true offhand precision.