Maximum speed with Black powder

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I searched and couldn't find an answer. Does anyone know what the maximum speed can be achieved using Black powder? Regardless of caliber and size of the load. I've heard it doesn't go above 2,000fps, but I've heard of up to 3,000fps. Does anyone have any information?
 
The fastest black powder cartridge that I am aware of was the 450/400-3 1/4" BPE(black powder express) from back in the 1870's. It was the only one to get to 2000 fps, if I recall correctly, & was used as a dangerous game cartridge up until smokeless powder was introduced. Muzzle loaders can't get anywhere near that.
 
I hit over 2000 with a 50 cal tc Hawken. Was long ago and I don't remember any of the load data.

As a general rule of thumb, the smaller the caliber the greater the velocity potential.
 
I have exceeded 2000 fps in my .32 caliber flintlock. I have recorded just over 2000 fps with my .50 caliber flintlock but do not gain much velocity above that with additional charges. The increase in velocity per 10 grain increments begins to drop off beyond a certain point. Recoil also becomes a factor if you are also looking for accuracy.
 
My son and I saw repeated shots over a chronograph exceed 2300 fps. That was a .45 patched ball from a 28” Cabela’s Hawken. The charge was nothing outrageous - something like 70grns Swiss. Can’t remember if it was ffG or fffG.
 
With black powder we don't depend on velocity, we go for mass.
Me too, every Sunday. Chicken dinner after.

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Dixie gin works got a .40 up to 2500 fPS
You can get a 50 or 54 up to 2300, just no reason to
Very good comments! So far the record belongs to my colleague with the .40 and 2,500fps! Would a .22 caliber with a chamber wider than the barrel, simulating a rifle bottle case, be the secret to achieving greater speeds? Did you understand the idea? Obviously, when loading, you have to be careful to stop the projectile in the barrel, before reaching the chamber.
 
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