I have honestly never shot my rifle from a bench, I have always sighted in from my pickup window or shooting prone over a backpack. All of my hunting rifles are less than 1 MOA shooters, and none are heavy barreled varminters.

I sight my rifles in at 100 yards and then I throw out empty pop bottles, etc filled with water out to however far I feel like shooting that day, and I proceed to blow them up shooting from hunting positions. My hunting positions are from Harris Bipods, Steay Stix, and prone over a backpack.

I would like to shoot from a bench someday to see just how tight of groups I can shoot with my rifles, but I know for a fact shooting either my 243 or 7mm at 300 yards I can put 3 shots into a 1-1.5" group shooting from prone over my backpack, so thats good enuf for me!