Here is my second try with the 4 pin roller...
I made a hull trimmer with a dowel and a utility knife blade so I had a nice even hull to start with.
The first one i forced the shell in when the roller was still cold and I wasn't spinning it fast enough. Just pushed the shell into the roller with my hand. I then tried a few of the uneven cut cases that were hot glued in. They crimped OK and I had a mess of melted hot glue to clean out of the roller.
I will have to trim my cases somewhere between the two lengths i tried next time.
The first case i tried is the one on the left. I bent it over pushing to hard when I didn't heat it up enough. I tried it again after I did a few and got it to crimp down an little more.
So will my groups change after crimping VS just gluing in a shot card with the exact same load? I also compressed my FG black powder pretty hard with the 2 brown federal hulls. How much increase of pressure, if any, will I have with a hard pack? My crimp also looks more quare like the 1 pin BPI roller. Is it my crimper or did I just push to hard when crimping?
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