I'm getting into it. Collecting brass casings that can be resized to 410. Others say there are 11 brass casings that can be used. 44spl/mag and 45 Colt for shorties. 410 brass and 444 Marlin will be easy since they are straight wall. 303 Britt and 9.3X74R will need a little fire forming to open the neck. 300 Win Mag will need 12 gauge copper wire soldered to the grove then flattened out, not getting into that. 30-40 Krag needs the head thinned from the case side, a small lath would be nice, might can do it on a drill press. No neck crimp on the casings will add extra life for reloads.
I won't rule out loading plastic hulls. Don't really want to add another primer to my supplies. I have rifle/pistol presses. A Mec in 12 gauge. A 410 kit is $200 to add.
I'll be using fiber wads and over cards. Will not rule out using factory plastic wads. Some people make theirs from milk jugs. Won't get into that.
Collect what you have and shoot me a PM.