Local Sportsman's Warehouse had some small pistol mag primers the other day so I picked up a couple hundred. I have always just used standard primers in my 357Mag with medium loads of Blue Dot or 2400 7 158gr JHP's. Do I need to back off my load a grain or two when using the mag primers or is there even enough difference to mess with?

Last edited by centershot; 06/02/22.
A true sportsman counts his achievements in proportion to the effort involved and fairness of the sport. - S. Pope