That ought to be easy enough. BPI would be your source of BB's shot and wads. An M42 wad ought to hold at lest 1 1/4 oz BB shot, fit into a Cheddite, Fiocchi or even Federal Top Gun hull, and placed over some Longshot or HS-6, rev up to about 1200 to 1,300 fps. BB's are also small enough to fit into the shot cup in a random stack pattern.
Once you get up to buckshot, when placed inside modern wads, the traditional sizes start misbehaving. Traditional #00 buckshot has a diameter of .330, weights 1/8 oz pellet, and was stacked in 3's, but not placed in plastic wads, rather was placed over a gas seal then felt or fiber wads. The shot ran nekked down the barrel. But traditional #00 buckshot will only stack in 2's inside shot cup of a plastic wad. The thickness of the plastic shot cup takes up too much room. There are a few wads still available that will hold 8 pellets of #00 buck stacked in 2's........as in 2 x 4 = 8.......but not many and none for straight walled euro hulls.
So option B is to drop down a notch or two in buckshot size. BPI offers a couple versions of #0 buckshot that has diameter of .315" that will stack in 3's inside a shot cup. 3 layers of 3 of those weigh about 1 oz, will fit into nearly all plastic wads intended for 1 1/8 oz target loads, and can be loaded for velocities from 1,100 to 1,400 fps.
#1 buckshot would do the same but would be small in size, waste space, be lite in weight and probably need overshot cards and such to get stack height right to get a good crimp.
A Mec Jr. and components from BPI would be easy enough to crank out 3 ot 4 boxes an hour.
Last edited by HayDay; 08/05/23 07:50 AM.