Hi.. I'm looking at the model 12 LRPV in 223 or 22-250 I will be shooting targets at my club out to 300m and some varmints like ground hog's and coyotes. I would like to know what the best twist rate and bullet weight would be for what I'm going to be doing. I was thinking a 12 for all around shooting but would like to hear from those with experience. I also will be using good factory ammo as I'm not reloading at this time. Thanks