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Winchester 66 musket

Just bought a Winchester 66 musket in 32-40 looking for help with value and correctness
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The .32-40 cartridge is too long for the 66. Could it be .32-20?
Or .38-40?
Looks like 32-40 to me
On a 66 caliber should be on bottom of action?
I was told it’s a 44
I was told it’s a 44
Where the caliber should be is rubbed as shown in picture surely no one done this on purpose
Model 66 was only chambered in .44 Henry rimfire. I'm not a Winchester expert,.
Been awhile since I been in the forums but is Bert still with us
The Winchester Model 1866 was chambered for the .44 Henry Rimfire cartridge. Towards the end of production, a few were made in, or converted to, a 44 centerfire cartridge, most of which were sold in Mexico. Both the rimfire and centerire cartridges were strictly black powder.
The bore in the rifle looks way better than most guns this age still has rifling and I don’t see pits May be a little dark but I have not cleaned it yet
They were never caliber marked and like others have said they were 44 Henry flat or converted to center fire. What is interesting is what looks like some kind of proof mark on the receiver. but it too blurry to tell.
Bob
Cody Firearms Member
Winchester Arms Collectors Association Life member
I’ll get some better pics in the morning thanks to all yalls help so far
Where the serial number is has me thrown off
It’s not under leaver like most I’ve seen