These were made in single shot and sxs guns. The 44-shot later became called the 44XL. There was also a 44GG (Marble Game Getter) which was loaded with a single lead ball. These are all based on the 44-40 case. There was long American tradition of producing shot capsule rounds. The 44-40 version seemed to take off.
Box of Remington 44XL, note the waxed paper shot cup.The 44-shot was strictly an American affair, though you will find some Belgian, Spanish and other guns chambered for it. It is the predecessor of the 410 in the USA. While the British had been using the 410 2" and 2 1/2" for some time. Eventually the 44-shot was replaced by the 410 in the USA. Most companies stopped chambering new guns for it by about 1920. Ammunition companies carried it until about 1950.
Harrington 1901 44-shot Take DownStevens chambered for 44-shotHarrington produced a single shot in 1900 that was chambered for just about every shotgun shell then available. These guns were so popular that they had to enlarge their factory 3 times over the next 5 years. Many others followed suit, they all had a 44-shot offering. They included Harrington & Richardson, Iver Johnson, Hopkins & Allen, Crescent, Stevens and perhaps others. Several also produced single shot short barreled guns in 44-shot.
Harrington 44-shot single shot hand gun handy gunIn 1908 Marble Arms announced their Game Getter. A pistol with shoulder stock and holster. The top barrel was chambered for the 22rf and the bottom for what they called the 44XL and 44GG.
Original 1908 Marble Game Getter configuration The first American chambered 410 was a Stevens single in 1913. There is evidence that Parker brought out the 1st American sxs 410 in 1924. However, Crescent may have preceded this, however there are no records to confirm that.
Early chambering are often found marked 44-shot / 12mm. These guns were mainly used by trappers, taxidermists and children. Most can NOT be safely used with modern 44-40 loadings.
The 1st American 410 chamberings were for the 2" brass shell. Eventually 2 1/2" became popular. The paper shell began to catch on and by 1930 3" chamberings began to be used.
For good website on the 410 with some 44-shot info
http://www.4-10.freeuk.com/index.htmlPete