Semiautos are more difficult to group well at 100 yards, but many bolt-actions can do well there - like was said tho, NO wind and good ammo!
My Winchester 75T has shot two five round groups of a half inch at 100 yards, using a cheap clamp rest and a 6X Weaver scope. Did it with Winny Dynapoint bulk-pack ammo too.
My 14 pound Martini-action BSA Mk.II International can shoot under an inch with it's peep sights at 100 yards.
My Norinco JW-27 sporter can do under an inch with Dynapoints too, and a Bushnell 4-12X40AO scope from Wally World.
I've read of shooters of bygone eras shooting 200 yard matches with the lowly .22LR rimfire - makes one wonder, eh? This little round has more going for it than most folks realize. :nod:
An old retired Marine who I used to associate with down here (he's gone to muster with God now) would regularly pop soda cans on the berm at about 110 yards, with his open-sighted Ruger Mk.II pistol with ten inch heavy barrel. I learned much from that old Marine!
PROUD TEA PARTY EXTREMIST!