S&w
Subtract the first two digits of the serial number from 100 and that will be the year of manufacture for this rifle. 100 - 27 = 73 "1973"
1920
1918
1958
No published sn data
No sn data available
1950
The Revelation 22 Model R100B caliber rifle was manufactured by Mossberg. The company Western Auto Supply is known to sell both these rifles as well as the cartridges for the rifle.
The Chinese B-3 is rated at 450 FPS by the Manufacture. This is considered to be slow in the world of .22 caliber air rifles. As an example the Hatsan model 95 fires a .22 caliber pellet at 800 FPS and a Crosman Nitro Venom fires a .22 cal pellet at 950 FPS.
1920 (no date code stamp)
The gun was made in 1941 You can research dates of manufacture by going to: http://armscollectors.com/sn/winlookup.php
A 22 caliber pistol holds a dose of 22 caliber ammo.