If you dont overdo the pressure the Lee Collet Crimping Die helps with better grip and reduces ES. You don't need a cannelure.
With the difference in springback between lead and brass, crimping non-canelure brass does not give much improvement. And, when overdone, reduces neck-tension.
If you dont overdo the pressure the Lee Collet Crimping Die helps with better grip and reduces ES. You don't need a cannelure.
With the difference in springback between lead and brass, crimping non-canelure brass does not give much improvement. And, when overdone, reduces neck-tension.
************************* And I believe it increases bullet failure when used on the edge of what a cup and core bullet can do. Produces a failure start point in the bullet.