Andy,I've never lost a bird,wait a second I never hit one. I only had two or three chances while hunting deer,I worked on head shots at the range up to 30yds,but the 3d targets arn't moving. If I miss the head I don't wound them. I'm shooting in the 53lb. range and shoot 400 Bemen ICSshifts,but 2013 alum.shoot the same,and there a lot cheeper.Don't louse them in the hay lot, I hear alum. isn't good for the cows. .