If the sights are replicated correctly, the muzzle will point below (higher front sight than rear sight) the intended mark when sights are aligned at a target at say, 25yards.
With powder burning revolvers and pistols, recoil induced elevation is the reason for this 'somewhat odd-appearing set-up'.
For example, check out the disparity between the front and rear sight heights on this revolver, a model 10 S&W M&P. This appears to be a "C" serial number, but otherwise is identical to my issue 5" bl. S#D350339 revolver in 1972.
The same thing is also true of my .54 cal. Flintlock pistol. The rear 'sight' is 2 pin-heads on the tang, barely sticking above the breech. Note the height of the front sight. The barrel is swamped in profile and the muzzle is actually only a few thousandths smaller in diameter than the breech is across the flats. This pistol, even though the front sight is higher than the rear sight with the muzzle pointing down, the gun is "on" the top of the blade at 50 yards.
1st on top, is an English Oficer's smoothbore Flintlock pistol, period about 1770, built by my bro.
