This pistol has not been made since 1941. Your best bet is the web, someone like gun brokers or guns America.
The 15XT is a BB pistol, like the name says. It is not a Pellet pistol. If you can't force is back into the BB holding slide then you might as well buy a new pistol. You will need a .177 caliber cleaning rod and use it to push the pellet back into the BB loading port
The Crosman 357W is a pellet pistol not an Airsoft pistol.
Sig
I would look on the web, places like Guntrader or Craigslist would be a place to start.
A pellet gun is not adequate for protection, and will get you arrested.
The best places to buy BB guns or Pellet guns are Canadian tire, some Walmarts, most tsc stores. But if you have a shop in your town that would be the best place. Ps. DO NOT BUY CHEAP BB GUNS OR PELLET GUNS
If you are asking about the Crosman C02 pellet pistol then Yes that is what it is designed to power the pistol.
This would be one of the best " Feinwerkbau P44 Match Air Pistol "It will cost you around $1,850 and an additional support charging system of around $400 to charge it with air.
shoot a lighter pellet.
Pellet stoves are sold at places such as Best Buy, Menards, or Lowe's. You can call your local store to see if they have them in stock before going there to buy one.
A pellet clip is the same as a bullet clip except for pellets. It fits in the breech of a pistol or rifle and holds the pellets that are waiting to be fired. Some clips are in the handle of the pistol.