I have a .30BR (custom built with a Borden action, Kreiger bbl, Jewell trigger, varmint-type stock). For whatever reason I just get better accuracy/consistency with Rem 7-1/2s than I do with F205s. My modified Rem 700s (.22BR and 6mmbr) seem to shoot better with the F205s. The .30BR really seems to shoot its best with Rem 7-1/2, 32.5 gr. H4198, BIB 112s seated just barely touching. That combo works for this rifle -- it might be a bit hot for some others.
I have no idea why, but that's what I've found.
Glen