Depends on the gauge of the shell. The smaller the number, the bigger the shell. A 12 g shell is ABOUT 3/4 of an inch in diameter.
No
none
yes
.410
gun powder
Any gun store sells it. Commonly shotgun shells #8 or #9 shot.
Shotguns fire shot shells. Handguns can fire specially made shotshells.
Many fine 20 gauge shells are made.
Have it checked out by a gunsmith before you try it.
depends...mine holds three when shooting 2 3/4" shells
Could be any of them as the "00" does not denote caliber, but the size of the shot contained in the shell.
Yes, However, the reverse is not true- 3 inch shells may NOT be safely fired in a gun chambered for 2 3/4 inch shells.