Originally Posted by socalfamous87
How much of a crimp do you need for my ar15 and a mini 14?
None, as long as you have proper neck tension.
That said, I still crimp all of my semi auto ammo, but not with the seating die. I use a separate die called the Lee Factory Crimp die. It is a collet type die that squeezes the case mouth around the bullet. Case length is not critical, cannot bulge the case, can be used with or without cannelure(crimp groove), helps secure the bullet and improves accuracy. YMMV.