My friend and I both bought Savage Axis .308s. My Buddy bought some Remimgton 150 grains and I bought some Remington 180s. I thought that havering a 9.5 twist that the heavier bullet would be more stable. We both sit down and preceded to go through the BORING barrel breaking in by Savage instructions. Anyways when all was sails and do e my buddies 150s were grouping pretty nice and my 180s were all over the paper. Is the 180s too heavy for that rifle? I now know that Savage recommends 168 for best results and when I start reloading all this brass I will go to Hornady 168 Z Max unless told different .