It would seem to me that all this would depend upon the hardness/thickness of the bullet jacket. As I use several of Lee's products, I would go with their recomendation. I do wonder what, if any decrease in case life that might be lost due to the crimp. Would be interested in a device with which to apply a good taper crimp. Seems to me it would get closer to the consistancy we as handloaders all want and be able to perform this operation on non-canellured projectiles.
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