
The possibility on the right is to use an adapter that I'd have to buy for $15 + shipping. It would allow me to use all 3 of these rounds (.32 ACP, S&W Long, H&R Magnum). However, none of these three are very cheap. I read about using .310" diameter lead round balls that you'd use for muzzleloading. I'd only want these to go around 900 FPS, so if I were to use Triple-7 (non corrosive black powder subsititute) I'd use probably 15 grains of FFFg since I have a whole pound of the junk I'm not going to use for anything else.
Would it be better to use the adapter and the .32 brass, or use old 7.62x54r cases. I'd size the neck, dump the powder in, and seat the ball by hand so it is about halfway in the outside of the neck, like you see in the picture on the left? Main reason is, if I took that rifle deer hunting, but saw a rabbit that I wanted to kill, or a squirrel, I could do so with minimal noise. Other reason is, if letting my wife shoot the gun, it doesn't kick her so hard. IMO the Mosin's don't kick that hard, but for women it's different. They just don't have as much muscle or fat around that shoulder area.
From some small amount of info I've read, it appears that some folks use the old 7.62x54r brass because they recommend labeling the brass so you know which are the reduced power loads. There'd be no reason to label the .32 cases since obviously you'd know they were the reduced power loads if you were using the adapter. That's just my guess.
So, just looking for thoughts/opinions here. Some folks may think this is stupid, however, I think it could be useful and cheap.