Nah, Ian's dreaming. If Brad is guna pony up, the local baby should be first in line. Plus he'd get to shoot/borrow it more. We are set up with lnl ap already. Just need that auto master caster yet.
Worked with a gal that was a A10 loader few years back. They don't come in pink or tiny! The 105 in the C130 is pretty impressive too. Should be alot of spare 5/38's around you could pick up.
get you about 5 lengths of 1" seamless pipe it's 2"OD. [or 3/4" ID it's 1-1/2"OD] solid steel pipe walls.
I proofed mine with 160grs of clays and 2 oz's of shot on top of 2 cardboard wads.
then just used that as the normal load...
no idea what the pressure was but [shrug] how high could it be with that expansion ratio.
anyway..LOL
you could get the shot weight down to 700grs or so and keep the speed up enough to sweep a field pretty clean in one pass. [like a rotating punt gun]