I dont have a rifle but with my 12 ga Mossberg rifled barrle open sights 100 yards I'd say about 6 inches and with my Traditions in-line Scope about 5 inches

Does a bipod count as a rest? I get 1.5MOA groups at 200yrds with my Ruger 77-II off a bipod kneeling, a little better if I put my butt in the dirt, prone off a short harris might as well be over a bench, I get .75" at 100yrds with it.

I got an SKS with a spike bayonet, sometimes I'll lay prone and stab that spike into the dirt, instant rest, about 1.25" groups at 100yrds with that set up! Not bad from a SKS and Remington in-accurates....I mean core-lokts!

I can keep all of my guns inside 4-5" at 100 yards. I never shoot off of a bench really, just don't enjoy it as much. My favorites are my 45/70's, and once you learn to play the rainbow with them, they are one of the most accurate guns out there short and long range. Very predictable round I would assert. I shoot off of the ground, sitting, off-hand, all the shots that I would take in the field. I like to think of myself as a Quigley in the making!!.

About 2" sitting with a savage 99 300 savage peep sight at 100 yards, everything else i have a tendancy to shoot off the bench.