550
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550
523fps
i don't know but if you fill a howitzer case with a balloon full of oxy and some (well a lot really black powder)ant fit a 12g shell in the primer pocket (with a bit of machining), it will shoot 1.25l coke bottle a lot further than you expect
was over 20 years ago but over 700m from memory
VC
Don't forget to protect your crony from the muzzle blast.
Burning BP shoots several feet out of my Golf Ball Canon.
300grains of FFG will send a golf ball out of sight at a great rate of knots
That steel ball is going to boogie.
Have you proofed your Canon?
How much Black Powder are you going to use?
Cheers
Pete
I cant see how to put 100,000psi into it to proof it?
don't know yet on the charge will do a lot of google and work up till I shit myself.
634fps
825fps
Calculating the angle on the dangle, the slope on the rope and the pitch on the bitch I reckon 1,786 VC. What is the prize again?
With home made black powder I'm going to be the pessimist with it not even making it to the chrony. 0fps. First go.
At college a guy made a cannon, put it in a vice and fired a 1/2 ball bearing at the wall, it went thru two thicknesses of match lining, thru the wood work shop full of students and a teacher and thru a window to disappear over the playing field. No one was hurt but the metal work room from then on had a restriction on turning up cannons!
Saltpetre, sulphur and charcoal, it the quantities and the grinding on the charcoal that's the secret. As a kid we used to make our own fireworks, but chemists got wise to what we were doing and in supplies were hard to obtain, saltpetre is used in the freezing works for hides, that was always the hardest to get!:thumbsup:
Im picking it will be loud and smokey which will fulfill the design requirements:D
I don't think it will go very fast with such a short barrel.
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