[32-40win]

Unless using a heavy recoiling cartridge or a straightwalled cartridge in a magazine type rifle or pistol, adequate neck tension will negate any need to crimp. When it comes to accuracy, there is no gain from crimping, and you certainly won't see any competition shooters doing it. It also creates the necessity of having brass all the same length, or sorting the brass by length groups and adjusting the die for each length as sorted, to be able to crimp it properly. And if you are shooting a gun like a singleshot or single loading a bolt gun, you can run .005 neck tension if you want, or with say a 338LM and a 300gr bullet, run it at .003 or .004,.005 neck tension in a magazine gun. Most match grade benchrest style seaters have no crimp rings in them.