While I agree the majority of (70%)shooters are fair ,20% are poor and the rest good with perhaps 1/2 of that outstanding.
With the exception of2 centerfire rifles I have owned all are capable of delivering better than MOA groups. The Rifle that couldn't was a Browning BLR in 308 that I purchase in 76. But considering it was only used with the factory open sights for hunting in a swamp where 20 yards was a long shot the 1 3/4 -2" groups @ 100 didn't mater much. The other is a Winchester 375 H&H which gives me1 1/4" groups. I've owned two Weatherby MK V's that delivered 1" or better at any time with Weatherby's 180gr nosler parts.
I shoot either Hornady or Federal Premium ammo in what ever bullet shoots best and have great results in 22-250, 308 (own 3 others besides the blr)and a 7 Rem mag
If off a bench and sandbag I shoota group greaterthan 3/4 " center to center with a "flyer" and you better believe I'm going crazy and checking the screws and out come the crony if I get more than one of those. The norm for me is 1/2 " or better.