I have the same exact barrel assuming its an 8 twist. Although I don't shoot either of those bullets you mentioned, my barrel likes the 142 SMK's and the 140 Berger Hybrids around 2745-2750 FPS which is 41.8 grains for the 142 SMK and 41.9 for the 140 Hybrid using H4350, Lapua brass and CCI BR2s.. I shoot both projectiles at .030 off the lands and it shoots right around a 1/2 MOA if I do my part. However, your targets are very similar to mine in that 3 shots will be right together and one shot off in la la land.. I've always kinda pointed the finger at my reloading causing those fliers, but I've yet to prove it either way.. I try to load them all the same..
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