Here's what a cursory search turned up.
Caliber markings on these H&R revolvers indicate it was made after 1908 and is rated for smokeless powder. Black powder H&R revolvers did not have caliber markings.
The grips are not original to the gun. Probably put on by someone in the past trying to pass it off as a S&W.
The patent date markings on the top of the barrel indicate it is a Second variation, made between 1909 and 1912.
Midway has ammo for it. Other internet sources as well.
Chamber pressure for the 38 S&W is in the same ball park as other revolver cartridges from the late 19th Century that started out as black powder and made the transition to smokeless. Factory ammo pressure levels are kept low to be safe in early black powder rated guns.
So, clean it up, load it up and have some fun with it.
Caliber markings on these H&R revolvers indicate it was made after 1908 and is rated for smokeless powder. Black powder H&R revolvers did not have caliber markings.
The grips are not original to the gun. Probably put on by someone in the past trying to pass it off as a S&W.
The patent date markings on the top of the barrel indicate it is a Second variation, made between 1909 and 1912.
Midway has ammo for it. Other internet sources as well.
Chamber pressure for the 38 S&W is in the same ball park as other revolver cartridges from the late 19th Century that started out as black powder and made the transition to smokeless. Factory ammo pressure levels are kept low to be safe in early black powder rated guns.
So, clean it up, load it up and have some fun with it.