I use brenneke short mag in my smoothbore for2 years now and I wouldn't use anything else. I hunt in thickets of heavy brush that you would not want to go into and sometimes in swamps. I getclover leafs groups at 50 yards and get2-3 in groups at100 yards. The performce this slug put on deer is great. Last year 2005, I shot a buck 40 yards and it drop him like a ton of brick. When I went to check on my buck I notice thatthe slugwent through2 branches of finger sizebefore hitting the buck and the slug still went through him right behind the shoulder andhe dropright there. That is what I called performance, try doing that to other foster slugs, I don't even think it would go past the first branch and make it to the deer. I've haven't shot that many deer (6 deer) with this slug but all the deer I'veshot at either drop inthier track or drop within 40 yards. All the other foster slugs I've tried in the past, (winchester, remington, and federal)have put deer down and left decent blood trails but I don't like to track and possibly have other hunters taken shots at the deer I just shot and then claiming it thiers because they put the killing shot.I love brenneke and would never put anything else in my slug gun.