I have a bunch of Oregon Trail 158gr lswc bullets loaded with 14.5grs of 2400 and magnum primers for my GP100. O/T data called for mag caps. I only shoot them in the Ruger, and they more than not get carried in cold temps.
I've read that 2400 gives more consistent pressure variation with standard primers. But like the OP I had more of the mags on hand.
No complaints, no signs of over pressure. Shoots to the sights, and knocks through 5+ inches of phone book with enough confetti for a parade.
