The long throated 338 RCM with 300 Bergers using the G7 of .419 matches the suggested comeups using JBM's program.
I am not suggesting this rifle is THE LR big game hunting round. I built it so I could shoot multiple shots whether at the range, shooting rocks or jackrabbits in hot weather. Also wanted the fouling to be minimal and barrel life to be long. So many of our hotrod rounds require rebarreling why not make a rifle that lasts like a 308?
