Your mortar is sub-2" and 24" long? If so that's a super long barrel. I'd cut that at least in half, probably more to get closer to the more usual 1:5 ID/length ratio (shorter for mines...). Put a plug in the cut section and have 2 mortars (or 3...). What's the tube wall made of? 8-10 mesh BP should be fine for 2-3" tubes.
Yeah it is long. I kind of like the idea of longer- more efficient powder usage. Just don’t want TOO efficient usage...right? It’s hmm..lemmie toss a caliper on it... 4.4mm spiral wound cardboard, water glass soaked and “belted” at the bottom with additional wraps of craft/glue. I made it for golf balls, and it works well with the finer “normal” powder grade. I was just thinking I’m gonna be tossing cans that weigh 4-5 times more than a golf ball and din’t wanna blow it up.
I have about 4 more foot of the tube. Maybe I’ll just build a couple shorter ones and not sweat it.
Damn does this thing send a golf ball tho
With the rather inaccurate time in the air method I got 800 feet...
I like smoke! On food or in the air equally well.