I 've loaded 100's of .44 magnums. All were crimped, and some heavy loaded still walked. Funny I never noticed until I had a cartridge that did not fire one time. After shooting the other 5, ejected empties and the non-fire, and noticed the bullet had walked half way out, but not enough to lock the revolver. Then started testing sveral loads by loading 6, firing 5, and checking the last one. Wow! All my .44 mags now get as heavy a roll crimp as possible without deforming the bullet. Oddly, none of the bullet walking seemed to affect accurracy from my 7 1/2 Redhawk.
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