I have a 196 series Mini-14 stainless. Just the regular Mini, not the Ranch rifle. Out to 50 I have no issues keeping them in an 4" circle with just a front rest off the bench. Offhand I can do OK with it, I need more practice
If I toss in a rear rest as well, and sit down and take my time, I do better.
Now, if I shoot Federal XM193 5.56 ammo, it will shoot that good at 100 yards. 4" at 100 yards with basically the same ammo our troops use? Should be all that is needed.
I do have an Accu-Strut installed on mine, and it helped quite a bit. I havn't been to the range with it in a while, I need to. The front sight is very wide, just about covers a 4" target at 50 yards.
I hear people say how AR-15s are more accurate. Maybe so, but I can't shoot my cousins bushmaster any better than I can shoot the Ruger. And I prefer the Garand style action and the plain rifle stock over the "black gun" look and feel.