The Snider and other 577 calibers are same as 24 gauge. I made
a 28ga FH with a long 3.25" brass case that I had RMC make
I used a 550 cal rifled barrel that was also made for the 550
Magnum. Our chamber/barrels fires factory 28ga also.
If you'd want a 24ga/58cal with you could also use
577NE brass which is 3" long and built heavy.And get a 58cal
barrel. And you could fire any 24ga regular shells also.
And stamp the barrel 24ga, just as we stamped our barrel 28ga.
And the fact that you could fire regular 24ga it is legal 24ga.
Checked on the CAWS info.
Here is pic of Case for the CAWS weapon system.
Case is belted, and it and the gun operated at 25,000 psi.
Its bore size is between 12 and 10 ga size, but the od of
the drawn case would let it start in 12ga chambers, so
they added belt so it couldn't go all the way in
to regular shotguns. Notice the thick sides and corner
near the base.Heavy enough for 25,000 psi. They loaded
it with big buckshot and test other projectiles also.
They had a plastic card over shot and filler and rolled
over brass mouth for crimp. Ed
