Yeah, there are still some folks shooting these (me included). Terry's data was pretty spot on so definitely a good place to start. I've also shortened the OAL a bit to better fit my rifle and the results continue to be excellent.
Yeah, but when powder selection is getting scarce and you have to opt for something other than 4831SC or the like, its nice to know your options, ya' know?
I have a 24" barrel on mine and H4831 didn't reach desired speeds with a full case so I switched to H4350 and haven't looked back. I can drive 140's to 2900fps with no problems.