I take it you're talking a 7mm Rem Mag. It's a fine round for elk. Go with a premium bullet ,either a nosler partition or a trophy bonded bearclaw in one of the 160's offerings. Elk are a big animal so try to keep your shots 250 yards or so with this round maybe a bit more if you're an accomplished shooter. They're a majestic animal and deserve a quick clean kill with a shot delivering plenty of energy for a quick clean kill.