I've always bought brass from AA. Dies, too. They also offer a case gauge which has proved very helpful for me. I'd highly recommend it. When I bought my dies and brass, AA was the only one offering those items.
I have loads worked up from a 275 grain Barnes to 375 Barnes, all using 1680. I've had good luck with other powders, too, including Lil Gun, but moved to 1680 from the Lil Gun negatives that came out regarding high heat generation and eroded throats.
One thing to pay close attention to with the Beowulf, is it must be primed with Large Pistol primers. Never use a rifle primer. Rifle primers, being slightly taller than pistol primers, will not allow the action to return to battery.
Last edited by RickyD; 01/11/16. Reason: error