I have some old cci, large pistol magnum. Primers, i've been restocking with new these old primers were dated 97. I was running a hundred of these to see if they were still good, they are.
I'm running nine point seven grain's of aa #7, and I ran them with standard fiocchi, primers and the cci magnum, primers, the magnum primers, leave the brass completely black carbon all over the outside, not as accurate, as the fiocchi, and the fiocchi's leave the brass almost completely clean. Are the primers just too hot for that load of powder and 180gn bullet in a g29 short barrel.?