I don't recall saying that I thought 'Tin Star' was a BP substitute. By that, it probably smokes a little, hence the reference to Baboon flatulence. And yes, I realize it's made by Vihtavuori, as it says on the label. No, it doesn't resemble the light, fluffy flakes of 'Trail Boss'.
The only published loads I could find were .38 Spl. and .45 ACP.