I have a 338 win mag single shot on a savage target action and a 26 shilen bull barrel. My chamber is throated about .170. I have loaded 300mk and with 75 grains of reloder23 have achieved 2690fps with no obvious pressure signs. I know this seems fast, "lapua fast". I have used two magneto speeds to verify. Has anyone else done this? I am looking for any loads with the Hornady 285 gr eld match. In my chamber overall length is 3.585 with .020 off the lands. May start with 70 grains of 23. Nosler brass and fed215 primers. Has anyone compared velocities with the two pills? Bearing surface seems a bit shorter on the hornadys.
