pitted bore wrote:SAGERATER wrote: ... It looks like every other Lee FCD I've have/used and similar to factory ammo crimps....weather has prevented me from doing any velo or crimp/no crimp recoil testing, but I see no problem putting an adequate crimp on reloads.
Several of us are really curious about the custom FCD that Lee created for you. I'm particularly interested in the width of the crimp it creates.
Below is a photo that forum member "gunnut" posted here about seven years ago. It shows the rather narrow crimp groove that results from the usual modification of the crimping ring in the 45-70 FCD collet. A significant amount of metal is removed from the crimping ring to produce the narrow result shown in the photo.
An unmodified Lee 45-70 FCD will produce a much broader crimp that may be useful in some 450B applications. However, the narrower crimp impressed into the case seems to retain bullets better than a broader crimp.
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