Hello to all. New here as this is my first posting. I am in the thought process of building a gopher getter\high speed paper punch and am thinking of going with the 6mm Rem AI. I've been looking around on different forums but haven't found a lot about this caliber. Anybody have any thoughts pro or con? It will be used mostly on GH out to around 600 yrds. I am thinking of staying in the lighter range of pills 55-80. I particuarly like the 62 grenades. Just love that splat factor. The banger will most likely be built on a 700 with a Douglas tube. Waht twist, 14? Length, would like to go 28?