Is there any reason I should not use Rainier 124 grain flat nose LeadSafe bullets for training and practice from a Glock 31 instead of Hornady XTP 124 grain JHP? My goal is to closely duplicate the Hornady Custom Ammunition 357 Sig 124 Grain XTP JHP load, but the Rainer bullets are obviously a lot cheaper and I am not concerned with penetration and expansion for training. Opinions? Wanna kill these ads? We can help!