My grandfathers "buffalo gun"

[vulture]

What you have is a Saddle Ring Carbine, and was probably originally a military issue. As to caliber there are a few common rounds these were chambered for, .50-70, 7mm, 43 Spanish Remington, 43 Spanish reformado. Try using a caliper and measure the bore, that will give you a "rough" idea of which round it is chambered for. You can look up the various cartridges mentioned on the internet and then you will have an idea of what they look like, this won't tell you which yours is chambered for and you would have to do a chamber cast to know exactly, unless someone comes along that can identify the round it was chambered for by the over all configuration of the rifle itself, I defiantly can't. If it is a fairly large bore then you can rule out the 7mm. The two .43 Spanish rounds take a bullet diameter of .439 and 440 respectively, although I could be wrong on the second bullet, I know the first because I reload for it. I have Remington Rolling Blocks in, 43 Spanish Remington, 43 Spanish reformado, 7mm, and 50-70, they are all the full length infantry rifles.

[Wulfman]

My father just gave me an old riffle that was described to me as a buffalo gun because of the large bore. After looking around online I found that this is an old Remington. I am trying to pinpoint which model this is. It seems to have two patent dates. Any info on this riffle would be greatly appreciated. Not pictured is the number 21 in the right side of the stock.

More specifically, you have a "Remington Rolling Block rifle".
Do a Google search on that and you will find lots of links.
Here's one to get you started:

http://en.wikipedia.org/wiki/Remington_ ... lock_rifle

Also, if you browse the pages of (and search) this forum you will also find vast numbers of posts about them (including pictures).

A number of states (national guard groups) used them after they were declared "surplus" by the military. I'm thinking that Minnesota and New York were two of them. Could be that the "21" came from the military or a state stamping.


Den

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[tjack]

You have a No.1 Rolling Block. Other than that, I can't tell. It has the saddle ring of a carbine but also has sling swivels. While that in itself is not too out of the ordinary, the rear sling swivel is placed really close to the trigger guard. The barrel wears a "rifle" rear sight. You don't show the front sight so I don't know if it has a rifle or carbine front sight. My guess from here is that you have a parts gun that someone put together. That is the best I can do without seeing more of the gun.