My friend shoots a 303 british and recoil is light shooting 180grainers. However my 270 wsm kicks easy also and will cleanly take any game I would be hunting. I wouldnt grab a 303 over a 270 anyday, theres also more factory loading for the 270 winchester than for the 303 brit so ur more likely to find a load your rifle shoots well. (if your considering a 270). If i got a .30 cal it would be the 30-06, cheap to shoot and tons of loads.