Did you find dies? I just got a new chamber cut and my old dies are a little tight. I think it’s because my other chamber was either a bit oversized or a “win improved” not the Ackley improved.
For me 48grains of H1000 and a 75 eldm was a good fire form load and then 49.5 was good for 3540 out of a 27” 8 twist.
New barrel is a 26” 8 twist. Shot it up to 50.5 grains with 75 ELDM’s and got 3610. Decent groups, no pressure, but can’t really get anymore powder in the case. I’m at 5000’ and it was 0 degrees F today.
You will like this cartridge.
