my 2.5 mm gun is practically a cement truck! I really think that stupid in-gun filter was the bottle neck. There's absolutely no reason this stuff shouldn't just fall out of my 2.5 mm cannon. I've been running power to my big air compressor so I haven't got back to shooting more, but it should help now that I'll be giving the gun all the air volume it actually wants as well.
I think this will be my first and only gallon of slick sand, however. It's just insane how hard this stuff sands. If I have to do it again I might try featherfill if it sands better. I think it might be cheaper as well, just doesn't build as much.