Re: Trying to identify
It looks to be a nice, but plain, half stock hunting rifle of about 1850. If it can be done very carefully, I suggest removing the barrel from the stock and checking the bottom of the barrel for a maker's name. In that era, most gunsmiths did not make their own barrels and the barrel maker's name can sometimes provide a clue to the general area where the gun was made, in this case, I think perhaps New England.
There is a rather odd contrast between the two silver inlays. The one of the horse is well done, almost lifelike, where the one of the deer is amateurish. What that means, I have no idea except that possibly they were done at different times by different people.