Ok so I bought a remington 798 30-06 thinking that the Mauser Action was the bullet proof benchmark like my other Mauser. Well it didn't exactly shoot up to snuff so I sent it for an accuracy package. Partial glass bedding (recommended for Mausers), barrel floating, trigger job, lapped scope rings, and target crown machined. A month and 80 rounds later I still get very bad groups! My question is there a relationship between grain size and accuracy excluding wind drift and drop? For example is it possible that a weapon might shoot better simply by going up or down in bullet size? Are some twist rates better with larger grain sizes? I think the barrel twist is 10. I really want this gun to work. It's a nice piece and I've already got 1200+ into it. Ive shot: Hornady SST 165 Federal Fusion 160 Remington Cor Lokt 150 Federal Vital Shok 165 ballistic tip Winchester 180 Accubond The 180 is the only thing that came close to 1 MOA which makes me wonder.