Mike we are just getting you built up.Not in one jump
from 550MAG to 1000HE, but by steps. Like a 550MAg,then
600 OK, 700 HE, then the big one.Seriously I will have a
test barrel in the future,for big one mounted on a trunnion,
to do load work.And I can use case spinner/lathe and
build swages to make 4 bore brass for folks from
the 20mm brass, I made this belted case from.I can make them so that the sides of the case isn't thinned.
That keeps case strong and reloadable dozens of times.
Got two who already want some.Got find a set of standard measurements for 4 bore if possible.If anyone has any 4 bore size info let us know.Ed.