Have ar15 in 223 looking in to new cal. ar. From what I can find in ar15 the cal. are 458.socom 50 beowolf 300 wisper 243 wssm 358 wssm 450 bushmaster.And ar10 243 win 260 rem 7mm-08 284 win 35 rem 300 savage 257 roberts 358 win 270 wsm 300 wsm 325 wsm 450 marlin.Does any one know of others in...