oderr:  I think you might have a carbine barrel that was shortened at the breech end, re-chambered, and then screwed into your action.  The front sight looks correct, but your barrel is too short.  Your rear sight (although an incorrect 1892 rifle sight) should not have that large gap between it and the sight guard barrel-band.  You appear to have an 1896 Carbine Stock & hand-guard.  It would be interesting to see a photo without the hand-guard.  This would show how the barrel taper matches up with the barrel channel in the stock and the front of the receiver ring.