Couple reasons I don't like the Lee Factory Crimp die. One, if you ever want to pull bullets with an impact puller it will take 15-20 whacks to remove the bullet versus 5-7 with roll crimped bullets. Not much of an issue with collet pullers but it takes a little more clamping pressure to grip and pull the bullets with factory crimps. Two, is that when reloading the squeezed factory crimp remains in the neck and will not size out. I do prefer to crimp cannelured bullet but prefer a light roll standard crimp. I've read more posts that crimping degrades accuracy but some others that swear it improves accuracy in their rifles?
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