That's what U.M.C. (Union Metallic Cartridge Company) did in the early 1900's.
The .44 Henry Flat rimfire was factory loaded with 28 grs. of b.p. under a 200 gr. bullet.
Note the 44-40 28 gr. load in addition to the standard 40 gr. cartridge in this 1910 UMC catalog cut....
Why U.M.C. decided to offer a 28gr. .44-40 cartridge is anybody's guess, but the 28 gr. charge weight would indicate that they wanted to offer a .44-40 cartridge that replicated the performance of the .44 Henry Rimfire.
Since I am a cartridge nut of sorts, I wanted to step back in time and replicate this cartridge just to see how it would perform. U.M.C. likely used a wad between the powder and the base of the bullet but I used PSB (Poly Shot Buffer). Velocity was very similar the the Henry 1,125 f.p.s. and the accuracy was pretty much the same as the standard 40 gr. charge in my rifle.
Cartridge history is interesting.....
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