[skeet]

Are not bad cases. The 12 ga case that loads longer than any other even when Win AAs were the originals are the 12 ga Federal Gold Medal.. Top Guns are of course different. I load many of them...or did and never really had any problems. They usually take a different crimp but they work just fine when you get it set for them.. The crimp will look a bit different than on all plastic shells. STS is a good shell to load but will take a differnt load altogether. I have a few thousand Top guns here(bought 'em at a yard sale for 5 bucks). What is your load for them. I'll check 'em in my loader.. I really do think it is the loader's crimp adjustment..