Years ago I had a 30-338 made, it had a K and P cut rifled barrel. It started life as a 300 Win Mag. The Ruger action IMO was/is a little short for seating bullets out, it worked but the 30-338 was better suited for the action.
I shot nothing but 190 BTSP's in it. 70 grains of 3100 propelled the bullet to 2974 FPS.
