I'm i w.a. and deer and bear over lap and when a big blacky is at 350 yrs its nice to knock the stuffing out of him the brush here is very thick and 300 i have used leave them right were i shot them not saying an 06 wont. a well placed shot works with even a lesser gun than an 06 but the 300 gives me, personally a little more confidence . but for early august i use a 338win mag no deer in the mix and i really like to thump bear hard the first time just my personal more is better obsession