for me this is my general rule for crimps
revolver = roll crimp the more consistent the length the more consistent the crimp the more consistent the load which should equal better accuracy.

Auto pistols.= taper crimp I think link is a little more tolerant of variances for consistent crimp here but considering in an auto pistol your head spacing off of the end of the case it becomes as relevant.

rifles with tubular magazines I like a good firm roll crimp and once again the more consistent the length the more consistent the crimp.

bolt guns and they are chambered 308 family and smaller I generally do not cramp provided they have good adequate neck tension..

starting about 30-06 or for sure 300 Magnum class I give them a nice tight roll crimp.

now I do like the Lee factory crimp dies in tubular magazine rifles and auto loading pistols quite well.

Last edited by ldholton; 02/07/24.