Re: WC844 opinions
Good powder, but use with caution til you do adequate testing. They (whoever "they" are) say to use H335 specs, but I've found it to be a little hotter/faster than the H335 I compared it to. Varies a good bit from lot-to-lot as well. Just be careful and you'll be fine. I would personally buy it from Widener's but they're out of it for now. So Patsreloading, GIBrass, or hi-techammo would be the other sources I know of.
As a side note, when compared visually to TAC, (which I also use a lot of) you can't tell one from the other once they leave the container.