Yes, Im bored, yes Ive had a few Stellas, but no I’m NOT attempting to reload 22’s. Because it typically is not reloaded, there is no commercially published load data for it. Im curious what the burn rate equivalent would be in know retail powders. 22LR has a relatively small bore diameter and relatively high velocity. Im guessing it needs to burn a slower propellant to make this combo work in its current form? Would the burn rate be something in the midrange like Unique/CFE Pistol or something slower like 2400? Let me know your thoughts if you’d like.

I'll jump in here just because I don't know the answer and I don't think anyone else does. I understand the Stellas and I know the Alaskan Ambers. Decades ago, in a shop, was displayed a HG with the top strap and half the cylinder blown off. I asked about it and the proprietor ( no reason to think he knew what he was talking about ) stated that the owner had tried to reload the .357 mag cartridge using 22lr powder. Reportedly the 22lr powder is so fast burning, faster than any powder obtainable, it pressure spiked and exploded the HG. I would use more than extreme caution if trying to use reclaimed 22lr powder. Good luck.

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"Don't Give Up the Ship"

For such a tiny cartridge I'm thinking fast powder. But don't know the answer either.

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Expect the unexpected

Not sure what factory loads use, but the guys who have successfully reloaded (or rather custom loaded primed cases) or created similar sized tiny centerfire Wildcats have all used very fast pistol powder, VV N310, Bullseye, TiteGroup, etc.

Fast powders like Bullseye. The couple of people I've spoken with that have decided to try reloading .22LR used Bullseye with good results. Far too labor intensive for this cowboy.

Vihtavouri 3N37 was originally designed as a powder for the 22LR and since it's a superb choice for the 38 special, 357 Magnum, and 9mm Parabellum I am very familiar with it's properties. Think of it as Unique but with excellent metering properties. So it has a burn rate quite close to Unique.

PS; the source for the info about 3N37 being designed for the 22LR actually came from the Vihtavouri web site info for 3N37. since this brand has changed hands a couple of times since I first started using it I was wondering if that description for 3n37 still stands I did some checking and the following is directly from the current Vihtavouri description.

Empty out a few 22lr and touch a long lighter to it. Count in milliseconds

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Still Running Against the Wind

very fast powder , burns completely in 14 to 16" barrels according to published data I have read -