Log Lewey, the grips are http://www.olegeorgiajim.com I really like them. I drooled over Tig’s until I finely just got a set.

I keep the Pac grip on the 270 because it absorbs more of the vibration, AKA kick. I put a forearm that is set up for a hanger bar to help “tighten” the groups a little… maybe!?! I have plans on keeping the rig like that permanently. Gene I think you are right about the grips as well. I “should” dampen the overall harmonics of vibration. I know this is overkill but I actually have a forearm for each barrel and even keep the same grip and frame setup.