I actually just read an article in Guns mag today about the Rem 30.
Saw the group they posted using the lighter bullets. 125 grain? It was really tight. Much less than 1 MOA at around 2800fps.
The heavier bullets didn't print as well, but were still in the 1" area.
My only concern is availability of ammo. I've never seen any on the shelf, but since I reload, its not a biggie for me.
My other AR is in the .243WSSM. I don't see that WSSM line of bullets going any where in the future, for whatever reason, so, a thousand rounds of empty brass will keep me in ammo until my kids inherit it.
Just a side note,(as I'm sure you already know) back in the accuracy department of all centerfire rifles from the 30's up to the late 90's, it took many hours of reloading or trying different loads to get within the 1" magic circle.
Its amazing now, that off the shelf guns routinely get that accuracy and better, with factory ammo.
Back in the day it was old conventional machine tools and the skills of the machinist that made good barrels.
Today with the modern CNC machines that can hold tolerances to .0001 on a routine basis, we are getting some really accurate off the shelf guns.
The guy that puts on our IPSC pistol shoots at the range, gave me a business card of the cold hand arms shop. He said he was pretty impressed.
There is a guy in Moore that deals almost exclusivly in Ar type of guns. Marks Firearms. If you havent heard of him, let me know and I'll get you his addy and phone number.