Hello Folks, a buddy of mine just gave me 2000 CCI small magnum pistol primers he can't return to the store. Thought I'd use it for my .40 S&W reloads. I read in CCI's website that it's okay to use magnum primers but with adjustment to the powder charge. It says not to go more than the minimum charge using magnum primers. My question is has anyone here used magnum primers and how much less of your powder did you use? Also, what problems have you encountered with it? FYI I use Longshot powder which generates less pressure compared to other powders. I just can't not use these primers Thanks in advance!