Got first 4 bore case made------
Here is pic of one---It is 4th in the picture.For Karl's
friend I included a 30-06 1st for comparison, 458 Win
2nd, 700 HE 3rd, 4 Bore 4th, and 1000 He last.This 4 Bore
case is .975 bore(Can be made from .935 to 1.025),Rim is 1.160 inches, and .85 in thick for headspace.Neck 1.015.
Base is 1.078 and can't go smaller without a 2 inch dies
and hydraulic press(Huge investment).Ross' Evans is .975.
Millar's is smaller, and Mickey's Imperial is .983.
Al and Mikes Tulas are .938 -------- I favor on all new ones going to 1.000, so as to get closer to actual 4 bore size and it is the easiest size to make,
from the brass. This being made from 20mm, is tough drawn brass that will last a lifetime, just like the 1000 HE
belted case built from same..Ed.