Fourbore its a Spainish double 10 bore 3 1/2" shotgun, I am trying to get it to shot balls Looks like it will be good as the first load I shot seams to group good will have to load some meore to make sure that it wasn't just luck. I think I see why the crimp will fold back when you use to much pressure its because a ball is round and not flat on top so when you press to hard the ends of the crimp will slide down the sied of the ball as thier is no place for them to press agenst as in a load of shot the that is flat accros the top.
Daryl SR7625 was the only powder that I sean that I had a load for that I though I would be able to use I didn't see any blue dot or the other you talked about. I think that It has to do with the gun control think going on right now they didn't have much in the way of firearms eather as their is a lot of approhention as to wha is going to happen. I ordered the mighty 10 gague from BPI yesterday so that should be getting here within the next few days and it should have a lot of load data in it that I will be trying.
Tom N