That's why I say a AR platform would be a good one to experiment with. Use the same gun with a different barrel,and you can reduce some of the variables that way and you'll get a more accurate comparison on the actual barrel differences.
It seems that 3/4 or less is about the norm for both my AR platforms with "good ammo" like Lake City, that have non chrome lined barrels and other than chucks @ extreme ranges I generally don't miss either.
Back in the day when I was competing , if I didn't end up with 1 ragged hole, it was time for more work. But sense I don't compete anymore that 3/4 groups work just fine for general hunting and plinking,,plus the old eyes just aren't what they used to be,,so they just may shoot better in different hands, but that's as well as I can shoot now days. But for my purposes, that works just fine.