No!! Here is a little info.
hate to disagree with you guys, since you are having such a lively discussion, but the shotgun in question is probably not chambered in 44 Gamegetter. Marbles gamgetters were cheap single-shot guns. It is more likely chambered in 44XL (1-9/16"). From Carrtidges of the World, Chapter 11- Shotgun Shells:
Quote:
Historical Notes- Made in the early 1900s, shotguns in this bore size were intended solely for use in hunting small game. This could be considered the forerunner to the 410 shotshell. Brass cases and paper shot containers were used. Overall, length was 2-1/32" with a case length of 1-9/32". The standard loading used No. 8 shot in a folded paper container, which protruded substantially from the brass case. Both single-barrel and double-barreled shotguns were offered in this chambering. Actual bore diameter was similar to the 44-caliber rifle cartridges (0.425") and would be called a 61-gauge.
From the reference tables:
Paper or wood shot container
Rim diameter- .525"
Base diameter- .471"
Mouth diameter- .443"
Case length- 1.57"
Open length- 2.03"
Bore diameter- .425"
Centerfire
So, theoretically, it appears that if you were determined to shoot it, you could make shotshells from 44-40 cases and use 44-caliber Speer shot capsules if you turn them down by .004" since they are .429", but it appears the 44XL rim is thinner so the rims would have to be turned. Charge would have to be black powder.
If it were mine, I would use something like the new American Pioneer powder rather than real black powder, due to fouling and corrosion issues. Or just clean it up and not shoot it at all. The shotgun probably has considerable collector value.