NEVER FIRE AMMUNITION IN A WEAPON NOT DESIGNED FOR IT!!!!!!!!!!!!!!!!!!!!
Danger
50-1000 depending on specifics
Fairly scarce, and out of production, I have only seen one- in caliber .22 Long rifle. The barrel should be marked with the caliber- as in .22 LR. However, a bolt action single shot will normally also be capable of firing .22 Shorts, Longs, or CB caps- but NOT .22 magnum.
475
It is a firearm with a shoulder stock, rifled barrel, and holds only one cartridge. It must be reloaded each time it is fired.
Browning.com has sn data under customer service.
Generally, no. While single shot rifles MAY have the rifle barrel replaced with a shotgun barrel, reverse is not true (usually) A rifle cartridge generates much higher pressures than a shotgun shell.
POSSIBLY- there is more involved than the length of the cartridge- it is also fatter, and needs a different bore diameter. The design of your single shot may or may not be up to the higher pressures. My advice- if you want a .22 magnum- buy one. Safer and cheaper.
I uncovered 3-inch .410 shells/guns from 1933 described on a cartridge collector site, but I'm having trouble finding reference to when a 3-inch 12 gauge first came along. I have an old single barrel 12 gauge 3 inch that I suspect is from the 1930's or before.
100-300 USD or so
These single-shot guns dont bring much money, but the magnum with 36" barrel will bring somewhat more than a typical 94F. Figure $75-$125. www.countrygunsmith.net I Bought one today and paid $125. Not worth much money but is a good looking old gun. Couldnt pass it up.
Let's use the right term- the P94 shown on the Ruger website has a magazine capacity of 10 CARTRIDGES. (Bullets are the part of a cartridge that comes out of the barrel)
There's one for on sale for $270.00 at(http://www.gunbroker.com/Auction/ViewItem.asp?Item=116518066).Hope this helps you out.