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.
This is some good info. Thanks for posting.
The most accurate loads I've put together for the AR all featured milsurplus WC846. It's really good stuff, just work up your loads in the summer.
Same for the .338 Win Mag, but with WC852. I've shot some really good groups with it behind 200gr NBT's, but I'm not comfortable with just how hot those loads are, so I stick to the non-canister H4831-sc I have for the rifle.
