If it makes you feel better one of my brothers and his son both use .270s and shoot the Federal Premium 130gr Sierra GameKings...They have killed 50-60 deer with those...

My other brother uses a .280 and his son uses a 7mm-08, both with factory 140gr CoreLokts...Between them they have killed another 150 or so...

Once you pile up those deer you can't tell which caliber did the killing...Dead is Dead...

Frankly the deer my cousin shoots with his .270 WSM run farther than others, but he ain't much of a shot...