Some people say no compression (think Hodgdon says this in the loading manuals) others claim success with strong compression in revolvers. I’ve used it in revolvers and rifles and have struggled with it in revolvers. Maybe I’m just ham handed but I find velocity and accuracy are not as consistent as with real black so I tend not to use it much. I have used it in caplock rifles and it works fine there where apparently I’m able to apply more consistent loading pressure. It is powerful stuff and if I lived where you do, with the limited availability of black powder I could probably make peace with it somehow. Or begin milling my own black powder…