Rklenke wrote:What's more interesting to me is that I'm getting the same velocity as you, 1875, with 340 grain bullets and 37.5 grains of Shooters World Blackout. I thought 1680 and swbo were more similar than that.
while you can use 1680 data to extrapolate load infor for SWBO (Lovex DO-63.2) - its just a smidge faster than 1680.
discovered that long before SWBO started private labeling it and selling it commercially here in the states. I was sourcing it from a local boutique ammo maker here locally who was using it for x39 supers and blackout subs.
i had to download my subsonic blackout loads by a few tenth's of a grain to maintain my velocity i was getting with 1680.
as i understand it, Lovex (a Czech company) used to make 1680 for AA back in the day but lost their production contract for some reason. so they modified the formula enough to appease the lawyers and do-63 was born, and then SW decided to private label it for commercial retail sale here in the us.
it sure does burn a lot cleaner though, and i mean.. having to use less powder for the same velocity and cleaner = win/win/win to me!