AA1680 is working quite nicely at the moment, 2800-2850w/ a 40gr, haven't taken it to max charge yet. I have also used H4227 and IMR 4198 w/45-50gr and AA9 w/55grcast. I have used L'il gun, it is tricky stuff though. The Hodgdon data on it works well for some, and is hot for others. In mine it is a bit hot. I started at over 15% under max and hit max at over 10% under max. Really nice speeds, 3150+ where I started from with it, cracked 3400 with a load I won't try again, all in a .8gr workup. Nothing else comes close to L'il Gun velocities, but, lot variations on it seem to be common. Also have to be aware that some early guns in the early 50's may have .223 bores, not .224. the Bee was originally setup with .223 bullets, they are actually still available.