Muzzle loading. Fixed cylinder designs

Muzzle loading

The first revolvers were muzzle loading, which meant that each chamber in the cylinder was loaded from the front with loose powder and a bullet. Usually, there was a loading lever attached to the bottom of the barrel that gave the user leverage to force the oversized lead ball into the chamber, which sealed it and held the ball and powder securely in place. The first practical revolvers were caplocks, because the caplock method of priming was the first to be compact enough to make a practical revolver feasible.

Fixed cylinder designs

The first generation of cartridge revolvers were converted caplock designs. In many of these (especially those that were converted long after manufacture), the pin on which the cylinder revolved was removed, and the cylinder taken from the gun for loading. Later models used a loading gate at the rear of the cylinder that allowed one cartridge at a time to be accessed for loading, while a rod under the barrel could be pressed backwards to extract the fired case. Most revolvers using this method of loading are single action revolvers.

Oddly, the loading gate on the original Colt designs (and copied by nearly all single action revolvers since) is on the right side, which may favor left-handed users; with the revolver held in the proper grip for shooting in the left hand, the cartridges can easily be ejected and loaded with the right. This was done because these pistols were intended for use with cavalry, and it was intended that the revolver and the reins would be held in the left hand while the right hand was free to load the cartridges.

Since the cylinder in these revolvers is firmly attached at the front and rear of the frame, and since the frame is typically full thickness all the way around, fixed cylinder revolvers are inherently strong designs. Because of this, many modern large caliber hunting revolvers tend to be based on the fixed cylinder design.

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