I have a Rem. 700 M-40A3 in .308. Built by very talented smiths. It shoots .5 to .75 MOA with BHM 175. I can match the performance with my handloads, but not improve it. I figure this rifle should be good for .25. My equipment is all top notch, as well as components. Lapua brass, varget, and vit. 140 powders, Federal GMM primers, 175 SMK bullets. I have played with seating debth and velocity to no end. Changed powder, but not primer. Case prepped to the max with the exception of neckturning, necks are super consistent. I have varied my bench manners, but still cannot hit my .25 MOA goal. I shoot at a range that has near purfect conditions in the AM and PM. Loads do well at the 1000YD line with the exception of a couple of missed wind shifts. My next course of action is to try 168 & 155 SMK and then try CCI Benchrest primers, but onlr changing one variable at a time of course. Any wisdom or insight would be great. Thank You in advance.