I understand from a couple of different sources that WC820 is a surplus M1 Carbine powder. I've fired a Ruger Blackhawk in .30 Carbine & from what I remember, the muzzle flash was very reminiscent of H110, which I heard was the powder for that cartridge. Is there any relationship in burn rate between WC820 & H110? Just curious, & thanx, jd45