There is a LETTER in a square on the barrel that can indicate year of manufacture. Most are modern reproductions made from about 1970-1995 or so.
1gran per caliber
Depends on the caliber. A .45 caliber pistol uses about 40 grains of black powder. Contact the maker's website and download the owner's manual for YOUR gun.
22-72
was a 38-40 black powder
a32 caliber black power connecticut a thousand dollar
Typically 50 to 75 grains of ffG powder.
You will have to specify if you are referring to black powder, rim fire or center fire and the weight of the projectile
don't believe any such item as 58 cal. black powder pellets. but, there is a 58 cal. slug for the 58 cal. black powder rifle
It depends on the type of powder, the age and caliber of the cannon, the condition of the cannon, the projectile, etc.
$850-$1,995
0.75 caliber smooth bore black powder flintlock muskets.Musket bayonets.Kentucky hunting black powder flintlock rifles.Various knives.Tomahawks.Sailing warships.Cannons.etc.
There are generally 2 types of BP firearm, 1 muzzleloaders, loaded with powder cloth patch and lead ball or mini ball (also powder and a sabot and bullet in the more modern guns. 2 Black powder cartridge guns, that fire a more conventional looking self contained cartridge loaded with black powder and a bullet. such as the 45-70 or the 30-30 ( first number is the caliber second number is the grains of black powder in the cartridge. 45 caliber with 70 grains of powder) I am greatly generalizing