Recent personal experience:
Rem 700 SPS stainless. Had to cut, crown, and threaded twice. First time was 1/2x28 and used a 5/8x24 thread adapter. I had all kinds of accuracy issues and got them sorted to shooting just under MOA. Still wasn't satisfied and talked to Thunder Beast, and I was told by them that my OD was too small for .30 cal and thread pitch I had chosen plus stacking tolerances of the adapter. They suggested 9/16x24 and to use their muzzle indexing break. I sent the rifle to them and got the service. All my problems went away. At that point the barrel length was 23.5"
With my 180gr Accubond and IMR 4831 handloads and a Thunder Beast Magnus I was getting 2742fps and small groups at 200yds. Small being sub MOA.
The rifle fit in a Cabela's blind, tree stand, and open country elk hunt.
It's not uncommon to be 400yds from a legal elk where I go, so that distance was important to me. I a papered the loads up to 200yds and shot small steel plates out to 600yds. At 400yds I should have been 2074fps and 1720ft lbs.
Side note, I don't recall but, I think I was at the first node in loading. My 26" 6.5 PRC with Berger 156 EOL, has better numbers past 200yds than that WinMag did. When I get that action back from re-barreling, I will be looking to improve my WinMag numbers at 24".
