Academy had some in .40 and .45+P. I bought a coupla boxes of each, have yet to touch one off. It seems like a reasonable substitute to the gold standard CorBon DPX which is very hard to find right now. I prefer CorBon because they have the most testing behind it, they've done it the longest, and they seem to squeeze an extra 50 - 100 fps out of each load compared to other makes like pressure ratings.
Per Barnes website, Asym, Double-tap, Black Hills, Federal, and Buffalo Bore also load the Barnes X bullet.
http://www.barnesbullets.com/product...ed-ammunition/