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I've got a Dillon SDB, honestly don't know what the crimp die is, but it works fine on both the 45ACP and 9MM Luger. It' a seperate station than the seater die on the press and I've had no issues with it. I think either type of die would be OK as long as it gets the job done. Some insist you should use a taper crimp on the auto cartridges, but I haven't found it to be much of an issue. Before I got the Dillon, I used whatever die came in the RCBS box for those calibers, the seating and crimping was done with a single die. Regardless time at the bench is almost as much fun as time at the range, at least for me. I sure don't consider it work! Such a pastime is a joy. Been loading for almost half a century, don't think I'll tire of it anytime soon!
I am using a Lee factory crimp die after the seater to remove the flair. It produces ammo to spec, but I have a real taper crimp die on my shopping list.
I would try to sell the 100 'free' bullets to fund a good die that produces a taper crimp. You can include the hornady dies for 'free' with purchase of the bullets.
explains why a taper crimp die is used with semi-automatic cartridges and how to set it up.
The RCBS catalog describes the taper crimp seater and roll crimp seater as separate part numbers, as I previously stated. However, the above information may be a more complete explanation.
Yes, the .45 ACP RCBS seaters will taper crimp, and that is why it is called a taper crimp seater. The RCBS .45 Colt seaters roll crimp, as they should.
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