Handloader magazine just did a write up on it (No. 233). It's from Accurate Arms. Described as "A mil-spec ball propellant for duplicating the M-193 ball cartridge. Slightly slower than Accurate 2230."
The article goes on to say that you can use AA-2230 data. They talk about loading .243, .223, .22-250, .30-30, .30-06, 8x57 mauser, and .45-70. One problem I could see with it is that it is available only in 8lb. jugs.