You will have to take it to a gunsmith for a chamber cast
National Firearms Company was a name used by at least 3 different companies. Your .22 was probably made when Marlin was using that name. Value will depend on condition, but is typically in the $75-$125 range.
Most manufacturers of firearms keep detailed records of various models and their respective manufacture date. Check out the Colt firearms website as a starter
The Sears Model 42DL .22 caliber rifle was manufactured by Marlin Firearms, their Model 80. Check with Marlin for parts availability.
It was manufactured in 1901. The people at the Cody FIrearms Museum can tell you what caliber it was when it was made (and it should still be the same if it has not been rechambered) if you send them the serial number and $50. Or you could read what is stamped on the side of the barrel.
Daisy did briefly manufacture .22 caliber firearms. They also manufactured a rifle that used caseless .22 cartridges until the BATFE ruled that they WERE a true firearm.
DO NOT DO THIS!!!!!!!!!!!!!!!!!!!!
It is an 8 shot .22 caliber rifle manufactured by marlin firearms company it has a blued barrel and a mossyoak camo stock hence the c in 925c, a plain 925 has a walnut stock
If you're talking about firearms, caliber refers to the diameter of the bullet or the bore size of of the gun.
yes they did
there are dozens of calibers from .17 to .70
50-260 or so
Any that have the appropriate sized barrel