Re: Small pistol vs Small mag pistol primers
Drop the charge down and work it back up. Mag primers should be treated the same as any other component change, every manual says the same thing,
"any time you change a component it's best to drop the charge down and work it back up", "Starting Over"
Do not drop the charge below published Minimum.
You may find you need a little less powder to achive the same results, then again you may not.
Do you have a chrony?
What is your current load?