Stumbled across this. Is the Girandoni technically a pcp? https://youtu.be/-pqFyKh-rUI
I would say, though, that it was the first successful PCP. Especially on a world scale like it was! I wish they had a remake available. That'd be awesome for deer season & pig huntin'!
If I remember correctly, Belgium army issue. Used for a about 20 years with many advantages over PB's at the time. No smoke was a biggie for a sniper. Rate of fire was vastly faster than PB with a 24 ball magazine on the side of the gun. Apparently, could fire entire mag on one fill. That's pretty good even by today's standards.
During the Napoleonic Wars, Napoleon supposedly had an immediate execution order for any soldier found with one. They were snipers and did a great deal of damage. No powder smoke, quiet and you didn't have to stand to reload. Just point the gun up, press a lever and a ball fell into the chamber. Lower the gun, aim, fire, do it again. It comes with a little pump kit and two extra reservoirs so a soldier could fire 60 or 70 shots before running out of air. Later, a large pump manned by teams behind the battle lines was introduced, and runners would keep the air coming to the soldiers on the front line.
Big problem was building, and maintenance. Tech of the day used brazing to make the air reservoir, and it wasn't good quality. Maintenance was a nightmare as leather seals had to be kept wet and precision things on the battlefield are hard to keep going. Eventually taken out of service due to the problems.
I'd love to have one, but only a couple survive.
Supposedly, Lewis and Clark had one, but there's a debate whether it was one of these or an airgun made by a Philadelphia gun smith. This thing is incredible. Lewis and Clark used the airgun to impress the Indians as to fire power. History shows PCP's go back a long way in history. The Girandoni was by no means the first PCP!