Seen deer shot with the remington version 300 and deer ran like not hit. They where shot in both lungs at about 100 yards and ran about 100 yards. Also on the black shadow the gun Smith I used had about 2-3 of those black shadows and the bolts should not close on a round, he checked head space and all where off. The customers sent them back to Winchester but I don't known what happened. I personally think the wsm and rsum were hyped up to much by outdoor writers.