I've been reloading for years with various pistol powders like AA7, AA5, H110, Bluedot, 231, hp38, powerpistol, and 2400. For some reason I've never used Unique powder for anything until recently. So far I've used it for some low velocity 240gr cast bullet loads in my s&w mod 29 44 magnum and shooting them today was actually a very pleasant experience. All the other times I've shot my 44 magnums I can't remember ever calling it a pleasant experience. The full power, heavy recoiling, fire breathing 44 magnum loads can be pretty intimidating and difficult to master. Using Unique powder at more sensible velocities makes this round more controllable and atleast in my case more accurate. I've also started using this powder in my 45acp reloads as well. I have a bunch of berry's plated 185gr hbrn bullets that have been sitting around for a long time because I could never find any load data for them. I finally took a chance and made up 10 experimental rds using 6.2gr of Unique. When I shot these rounds through my Glock 41 today they shot and cycled perfectly. I'm probably going to stick with this load. Unique also seems to work well with some other bullets in the 45acp as well as the 45 long colt. I'm amazed at how versatile this powder is and wish I'd used it a long time ago. I think sometime in the future I'm probably going to also use it for some low velocity cast bullet loads in my 416 rigby. I can't seem to find any cast bullet loading info about it. Has anyone here ever used Unique powder for some 416 rigby loads before?