Someone asked earlier what kind of pattern would you have at 10yds with the hevi 13 and that there wouldn't be much room for error. I shoot the Mag Blend and wondered the same thing. Well I can't say for sure about 10yds but at 20 with mag blend I have almost the exact pattern as I do at 40yds and it looks identical to the 40yd pattern of #7's shown on here. Some may say well that isn't something to be happy about, but I'm thrilled about it because my pattern at 20yds with Remington Premieres is about the size of a softball and that doesn't leave much room for error.