What is the value of a cobra 38spl derringer?

When was a Colt 38 cal official police revolver with serial? What is a Wilson ramped barrel? How old would a king nitro shotgun with the serial number 2397 be? Are parts available for the sears 22cal air rifle model 126 19300? What is date of mfg serial? What is the effective range of a 7mm-08? What size gun for kodiak bear protection? What can you keep in barrel? How do you find a clip for a Stevens Model 258a 20 gauge single barrel shotgun? How old is us navy smith and Wesson 38special nickel plated ctg? What is a single population made of? What is the Best air-rifle you can get without a license in the UK? Can a 380 use 9MM bullets? How much is a smith and Wesson model 66 border patrol revolver worth? Is there any way you can put a ar15 carry handle scope mount on a mini 14 Possibly with a weaver rail? How much does a intratec tec22t? How accurate and reliable is the Remington Speedmaster 552? What is the model number of Savage Arms' autoloading shotgun that looks like the Browning Auto 5? How long can you leave an air rifle cocked? What is the age and value of a Winchester model 72A?