You will have to provide a detailed description of the action type, ALL markings, shell size, barrel length and choke, finish
m-66single shot 3inch410 shotgun
The Ithaca model 66 single shot shotgun that was made from 1963-1978 was offered in 12ga,20ga and 410 gauge only.
You may contact Ithaca arms and they will date your shotgun for you.
Your serial number indicates that your Ithaca shotgun was made in the year 1920.
If that is an old double barrel "New Ithaca Double" it was made in 1926.
1976
Marlin made a lever action .410 gauge shotgun from 1929-1932.These were made as a stockholders promotional firearm.The New model .410 was made from 2004-2005.
Remington
Its an Ithaca Flues model made in 1921
The 410 is a shotgun round. Slug loads are available and have been made for decades.
I too have a Ranger .410 sxs hamerless shotgun. I believe it to be made by Stevens. Possibly a model 311.
53-56