Try e-gunparts.com, Shotgun News, Gun List, gun shops, Brownells, etc..
Depends on EXACTLY what you have and condition. 100-700 USD
50-5000 USD or more depending on specifics.
Try gun shops, pawn shops, on line auctions, estate sales, garage sales, want ad, for sale ad, egunparts.
yes
1899 for a Colt lightning .22 mag rifle.
Your colt trooper was made in 1966.
No
The Lawman mk III Colt 357 mag is valued at $1,000 in excellent condition. Good condition value is $800.
You will have to call Colt, that sn does not appear in published data
your colt is of modern manufacture period. it will take the 44 mag. cartridge 'IF' the barrel has 44 mag. written on it. Or, it could be a 44 special, also written, whereby you cannot use 44 Mag. cartridge. However, if it is a 44 mag. cartridge, then you can shoot modern 44 mag. cartridges OR 44 special cartridges............
@1966
@ 1966