I can reliably kill elk out to 500 yds with a 270. If I'm undergunned, my freezer doesn't know the difference. Fire once, and if they're not DRT, it's a 75 yd blood trail. All but one of my elk killed with that rifle were with partitions, mostly 130 with a couple of 150's and my last with a Hornady 130 GMX

My #2 elk rifle is a 300 WSM, so I'm not exactly biased against the 30 cal stuff. But a 6.5 lb, scoped and loaded 270 is my go-to elk rifle. Shoot what you want, my freezer's full, too.