Probably 32 ACP. Have it examined by a gunsmith.
Yes
Yes
this like so browingthis like so browing
Yes
Varies according to caliber.
RCBS will.
No, they are different sizes.
There have been several handguns made that fire .410 shotgun shells- most recently the Taurus Judge. By the way, .410 is actually a caliber of shotgun, not a gauge. A .410 shotshell is about 67 gauge- but no one uses that designation.
yes
I have never seen nor heard of a revolver airsoft pistol with non reusable shells. You should have no problems reusing them.
get a cube
You will have to tell us if they are loaded or empty, whether they are shotgun shells (and the gauge), rim fire or center fire and the caliber.