Just got an email from Hodgdon about a new spherical powder called CFE�223. The letters stand for "Copper Fouling Eraser." It supposedly contains a proprietary de-coppering agent that prevents and actually removes copper fouling from bores. Load data for a wide variety of cartridges is available, but the intended use is clearly for the 5.56/.223 round.
Just looking at the data, the powder seems to have a burn rate a tad slower than W748 or H335, but that's only my first wild guesstimate. See the tested data for specific guidance but it would seem to have fairly broad use as a medium-fast burning spherical.
Western (Ramshot) has incorporated a de-coppering agent in their TAC powder for some time, without much fanfare. But it does seem to work.
