Rick,
I am having very good luck with the Lee Factory Crimp die on loading bottle neck brass. As you stated, it is a collet crimp system with bottle neck brass, and works especially well, on 30 Luger, and 38-40 brass. No need to trim any of the brass, which I really am thrilled with. I have just recently started using one on my 45ACP loads with plated bullets, as I would occasionally find a round or two that would not go fully into battery on my 1911s. The jury is still out on it's use on the 45ACP brass.
