I have not shot my 300 WM conversion much, because I also have 6.5 CM, 7WSM, 308, and now 6.5 SAUM. All my DTA barrels shoot. 6.5's and 7 are SAC barrels.
300 WM barrel I have was easy. Shoots anything well. First group out of it with Southwest ammo 190SMK at 200 yds was sub ½ moa. Also...