I've killed plenty of pigs 300-400 yards with my .270win. Never shot a deer that far. But it's plenty lethal for my FL piggies. Practice practice practice. Wind starts turning into a real issue after 300 yards. I run 150g SSTs. being pushed in the 2900fps range. It flat out hits them like a mack truck. FYI there is quit a bit of poi drop after 400.