The case they converted is 20mm vulcan shortened and blown out to .959.
We are making a 4bore from same brass using case full length, 4.1" long
and .989-1.00 " bore-- 2000gr slugs at 3200 fps possible . Same 4bore case
as Ken Owen puts in his 4bore custom built doubles, only they are turned cases.
Or 3500 gr at 2400 if you want heavy bullets.
We are making a two bore case that is 5" long, will put a 3500 gr out over
3000 fps if you want. Case made from 27mm Nato aircraft round cut off
and it is steel case.Here is pic of 2bore. The case is rimmed.30-06 0n right
for comparison.
