I bought some 45acp Aguila back in the mid '90s. When I went to reload it, I found some cases wouldn't hold a jacketed bullet very well (the setback was strong with those). So I cull them out, along with some old mil-surp brass I have, and use the Missouri Bullet IDP #4-XD with them. No problems at all. Those bullets have a cannelure in the area of the case mouth that allows enough crimp to catch the bullet and keep it from moving. I didn't have to change anything with the crimp to get a good/safe crimp on the bullet and still allow the case to headspace properly.