I believe 3 grains of black powder for a start
you should note that Iver Johnson immigrated to Worchester, Massachusetts from NORWAY in 1863. He and his partner Martin Bye were awarded firearm patents in 1876. I don't see how you could have a 1862 model of a Iver Johnson pistol ???
Absolutely. Lou Imperato was the reason Colt got back into the black powder handgun business. He was a large Colt distributor and had also purchased Iver Johnson Arms, and he convinced Colt to import rough case frames and major parts from Italy and complete manufacture was done at the Iver Johnson factory. All F-series Colt Black Powder revolvers were manufactured at Iver Johnson.
.32 cal. black powder
Your Iver Johnson will shoot rocks if you want. the biggest and single most issue you need to keep in mind is the breech pressure modern loads produce. most antique guns utilized black powder as opposed to modern smokeless powder and with that your comparing apples to watermellons. through the company "Balistic products" they specialize in shotgun paraphenaila and offer many books and products to safely relaod black powder shells fire antique shotguns.
Iver Johnson was created in 1871.
Iver Johnson ended in 1993.
a good qualified gunsmith should be able to answer your question for you.
Iver Johnson Champion$200.
need picture of Iver Johnson 22 mag riffer need picture of Iver Johnson 22 mag riffer need picture of Iver Johnson 22 mag riffer need picture of Iver Johnson 22 mag riffer need picture of Iver Johnson 22 mag riffer need picture of Iver Johnson 22 mag riffer need picture of Iver Johnson 22 mag riffer need picture of Iver Johnson 22 mag riffer need picture of Iver Johnson 22 mag riffer
If you have the Black powder model(made for blackpowder cartridges)these were made from 1890-1908.If you have the smokeless powder version,then these were made from 1909-1941.I am fraid that is the best that I can do for you.
My iver johnson has the serial # on the trigger guard
I read that the owlhead Iver Johnson 38 was popular around 1940 and was a gift from a grocery store if you paid your bill with cash. I bought one at pawn shop for one forty. "execellent condition"PS use black powder ammo.