Tried to reply from email but didn\’t seem to work. I shot those in a 20 inch BCA 1 in 8 twist barrel. It is a pretty nice build not real fancy or expensive, MBA 1 LUTH stock on a stripped out Delton lower and a POF 3.5 # straight trigger. BCA uppers get bashed sometimes on reviews but I have 3 builds using them and have been happy with all three. I have a 458 Socom that shoots clover leafs with about anything you put in it.