I started crimping lightly on all my cartridges except rodent ammo.i use a lee neck crimp die I have about 30 some different neck crimp dies for that many cartridges ,I use the 300 win.mag one also and I do believe my ammo is just a little more accurate,plus bullets stay seated better too.my good friend believes neck crimp dies do help with a little accuracy. Midway USA sell`s lee neck crimp dies the cheapest

Last edited by pete53; 01/13/19 01:35 AM.