Go to the attached Crosman web page and locate your 357 parts manual. It is about 1/2 way down the list. ( See the link below)
See the Link Below and locate the owners manual for your airgun.
You take off both grips. The C02 nozzle faces up into the gun. Tighten it as tight as you can and make sure you tighten it as tight as you can. I also recommend you use pellgunoil it increases the maximum FPS and keep the seal nice and tight. If you use the pellgunoil it will keep your airgun working like new for as long as you can keep it. If you would like to download the "Owners Manual" for the Crosman 357 click on the link Below. Crosman has it on there web page.
The 357 sells for about $50 in the USA. If you can find it cheaper, go for it. Or you can purchase a used one off of Craigslist. But I would check it out and test it first to make sure it holds a charge.
The Crosman 357 is modeled after the COLT PYTHON. If the Python fits the holster, then the Crosman 357 may also fit. Your just going to have to try it.
It's a model of a COLT 357. Just like the Crosman 1077 is a copy of a Ruger 1022. Several of Crosman's air guns are modeled after real firearms.
See the link below for your selection.
You can't it's not designed to be a repeater.
see the link below for the owners manual.
If you are referring to the Crosman 1377 air rifle it can still be repaired by Crosman airgun. Contact Customer service at www.crosman.com.
The Crosman 357W is a pellet pistol not an Airsoft pistol.
The Crosman 357 came in 3 different barrel lengths. 4", 6", and 8". Crosman is still making a slightly updated 357. Yours is most likely a 4 or 6 inch 357. Assuming that it is still in good working condition and has seen normal wear, it's value is around $35.