I originally wanted to use Lapua brass in this rifle and tried it with R-26 and 147's a few weekends ago. My large firing pin was piercing the small rifle primers. So I ordered some Petersons brass with the large rifle primers. The Petersons brass is heavier and has less capacity then the Lapua or Hornady brass but I was told that by Petersons when I ordered it. So I loaded 44grs to 46grs with R-26 and 147 ELD-M's. It really liked 46grs at 2875fps. I'm sure I could load more in these cases now that they are fired but if I keep getting results like these I'm good with that velocity.
BTW this is a Remington SA I had nitrided after the bolt was fluted and had the bolt handle threaded so I couldn't bush the firing pin hole in the bolt to run a smaller pin. It's a Brux #3 8 twist barrel in a McMillan Game Scout with Edge fill. The scope is a Zeiss 5x25 with the varmint reticle.
BTW this is a Remington SA I had nitrided after the bolt was fluted and had the bolt handle threaded so I couldn't bush the firing pin hole in the bolt to run a smaller pin. It's a Brux #3 8 twist barrel in a McMillan Game Scout with Edge fill. The scope is a Zeiss 5x25 with the varmint reticle.