I've killed a lot of deer with the 270 wby. I think the lighter weight premium bullets are ok. My favorite being the 140 fail safe. I'm down to my last 50 or so. Also used the 130 Barnes TS with good luck. If using a standard copper with lead core bullet I like a 150 Hornady spire point. These bullets have been loaded in Wby factory ammo for years. Hasbeen