Well I posted this for two reasons. #1 was to try to get SW to understand why I don't agree with the MSDS, I am inclined to believe the other 17 parts are a standard retardant. #2 I though all the guys no matter what they shoot would find it interesting.
But after reading the posts I think that there is on point some of you are missing. I disregard the price I got a chance to pick some up cheaper than 777 I think [not sure what 777 costs any more but I bought 2 cases of BH for 16 dollars a case.
When I judge a powder I look at two things first, how much work and time it costs me to use it, my time is often limited and its valuable to me.
The second thing is where I differ from a lot of people. Pressure is what pushes a bullet but it can be applied in different ways a powder that goes quickly to peak pressure [ which black and most of the subs do not ] you have to worry about what peak pressure is more but you won't find unburned powder going out the barrel, this is what limits what you can get out of a powder.
Now when we talk about progressive burning powder, the more the pressure the faster it burns, and when you can find a progressive burning powder with an elongated peak and you do enough pressure testing to know what your limit is so you can take best advantage of it then you compare that velocity to the velocity you can get with other powders, and remember the longer lower pressure peak when pushed up to the same point as the other powders is still safe but more stable so long range accuracy should be better. Several people have mentioned the velocity obtainable so I won't repeat there work. Lee