Originally Posted by GioaJack
Drop your normal load by about 10% and just work back up. If you're already at mouse flatulence you probably won't have to do anything.
I agree w/ Grandp.. I mean, Jack..
Someone posted some chrony results not to long ago on the differences of small and small magnum primers( i think it was cci though), and the difference was about 60fps. So if you're not loading close to max, you're probably OK. Probably still a good idea to just start low and work back up again.