Yes, You're right. A pellet don't know what ga. gun it's shot from if they're going the same speed but a 410 3" is pretty slow compared to a 12 ga. high brass by 200 fps. What shot size was the most effective for you? I don't plan on shooting past 25 yd.I have 7 1/2's in 3/4 oz. now. Thanks for your reply ;D