H335 was the WC852(? not sure of that number) govt contract powder for Ball M193 and enough of it was used by the benchresters to establish it's bona fides accuracy wise. If you burn a bunch of it you will see some variation of lots and will need to tweak the load a little if your rifle is picky.
That would be WC844.
WC846 = Blc(2)
WC852 = H380. Be careful with 852, there were some fast lots that didn't meet milspec that were surplused, so start a bit lower than normal when you work up with it.
