I'm new to reloading and I've been following advice from a few guys here and other reloaders I know from work....I've recently reloaded some rounds for my Norma Mag and I was following my reloading manual (an older pacific press) and it said if the bullet has a canalure then crimping should be used so I proceeded to do so. Since then, most of the guys I've talked to said they never crimp....canalure or not. I haven't fired these rounds yet.....Opinions appreciated!