07-24-2023, 08:58 PM
Just happened to find 30 empty 6.5 Grendel cases. Ok I just loaded up 3 rounds each of 30.0 grains and 30.5 grains of SMP 763 for my grendel under the 120 grain Barnes Matchburner. It is over 100 out there and I did let the rifle warm up a bit before I started shooting. Primer is the Federal 205 and Brass is Starline. The 30.0 grain load showed the barest of shine where the ejector was positioned. Shot three into 3/4ths of an inch. The next three showed to be a bit hotter than I will accept but still not outrageous. Slight cratering, barely feel it with fingernail. just a bit more of a shiny spot where the ejector was. POI moved 1/2 inch left and vertically strung into an inch. Think I will back off to 29.5 grains and see how it goes. Kind of like load development backwards. Might maybe get my Magnetospeed out and measure FPS in the morning. Loaded 3 each with 29.0 and 29.5 grains of SMP763 for the morning shoot.