Lots of unburned propellent spewing from the muzzle. Reminds me of when I was experimenting with Blue Dot powder during my reloading days. That was some filthy stuff, always leaving parts of my gun black from residue. I remember the grey cloud of dust and smoke that would pop out in front of the barrel every time I fired.
Still, it keeps selling. Someone must like it!
I believe Blue dot is mostly used for Shotgunning.
It’s a relatively slow burning powder. What were you using it in?
I had that problem when I tried VN340 in a 4.4″ Sig P220. In a 5″ 1911 it’s apparently just fine, but in the shorter Sig barrel it was belching enormous fireballs because of all the powder that didn’t get a chance to burn before it blew out the end of the barrel.
“It’s a relatively slow burning powder. What were you using it in?”
Various handguns with 4 inch barrels. I only bought one can of Blue Dot, and switched to Accurate #5 because it was so versatile.