Originally Posted by Zombie Steve
Generally, you'll have to taper crimp to get it to function in a semi-auto, but don't think of it as crimping. Think of it as de-flaring the case. All you're trying to do is straighten it back out. Neck tension holds the bullet just fine.
Your normal seater die will be able to do this. You might want to do it in two steps, although both seating and crimping can be done at the same time. Just easier to take them one at a time.
Take your barrel out of your gun and drop a finished round in the chamber. Just crimp enough to get it to drop in flush with the barrel hood. It should fall out freely. That's all you need.
No need for the Lee fcd or any other fancy crimp dies. .
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