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  #11  
Old 06-17-2013
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Re: What do you have for a cannon?

26.5mm? That's 10 inches. You must meen 2.65mm which is 1".
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  #12  
Old 06-17-2013
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Re: What do you have for a cannon?

My deck gun: BIG-BANG Cannons Conestoga Company
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  #13  
Old 06-17-2013
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Re: What do you have for a cannon?

I've seen a nice cannon made from a prop coupling.



The dude poured in black powder, and dropped a golf ball in. Stuck the fuse in through the set screw hole. Used a sandbag to adjust elevation and windage. He would shoot it out over the bay.

It was great fun.

to watch.

from a distance :-)
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  #14  
Old 06-17-2013
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Re: What do you have for a cannon?

We used to have "Bangsite" cannons when we were kids. They made a pretty loud noise. Sounds like the same principle.
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Old 06-17-2013
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Re: What do you have for a cannon?

Quote:
Originally Posted by Dog Ship View Post
26.5mm? That's 10 inches. You must meen 2.65mm which is 1".
My friend, you need to study the metric system a bit more
I think you are confusing cm and mm.
mm to inches - millimeters conversion
26.5mm = 1 and 3⁄64"
They make great inserts that allow to shoot 12 gauge flares in these pistols. I make 12 ga blanks using my shotgun reloading press.
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Old 06-17-2013
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Re: What do you have for a cannon?

i have found a Coronado 25 that is completely stripped down, supposedly all the parts are "in the box". I am considering buying it and restoring it but i have been unable to find the hull id. Can anyone advise me where i might look to find it?
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Old 06-17-2013
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Re: What do you have for a cannon?

Kriss, 26.5mm is an odd caliber for a flare launcher. Is it war (or East Block) surplus? I own a 25mm launcher and flares for that (especially the longer duration parachutes) can be hard to find. I have an aluminum tube insert for mine in order to launch the more common 12ga flares. Even with a WWII surplus brass launcher, I’d be hesitant to use a more energetic propellant like smokeless or black powder. The ATF had an interesting article reporting on the dangers of using a 12ga insert to fire shotgun shells. The rest of the “gun” is pot metal and was prone to exploding into shrapnel when firing a shotgun round. Our club uses 12ga black powder signal rounds for race committee. They fire a plastic wad, which is plenty dangerous on its own. As for larger caliber ordnance, our club has a pair of fixed mount signal cannon flanking the flagpole, which we use ceremonially at noontime on Memorial Day and Fourth of July. Across from us is Coast Guard Island and they do a 21 gun salute with their signal cannon. At night, after the fireworks are finished, we hear a lot of gunfire coming from the Oakland neighborhoods. When the Lady Washington or Hawaiian Chieftain are down for the Master Mariners, we will fire a “broadside” as they pass the race dock. They in turn, respond with a broadside of their own.
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Old 06-17-2013
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Re: What do you have for a cannon?

Quote:
Originally Posted by caneyln View Post
i have found a Coronado 25 that is completely stripped down, supposedly all the parts are "in the box". I am considering buying it and restoring it but i have been unable to find the hull id. Can anyone advise me where i might look to find it?
Some of those older boats did not have a hull ID numbers.
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Old 06-17-2013
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Re: What do you have for a cannon?

Quote:
Originally Posted by GeorgeB View Post
Kriss, 26.5mm is an odd caliber for a flare launcher. Is it war (or East Block) surplus? I own a 25mm launcher and flares for that (especially the longer duration parachutes) can be hard to find. I have an aluminum tube insert for mine in order to launch the more common 12ga flares. Even with a WWII surplus brass launcher, I’d be hesitant to use a more energetic propellant like smokeless or black powder. The ATF had an interesting article reporting on the dangers of using a 12ga insert to fire shotgun shells. The rest of the “gun” is pot metal and was prone to exploding into shrapnel when firing a shotgun round.
Yes, that is a surplus East Block caliber (my pistol is Polish and it is very well made, to military specs with proper steel barrel and locking mechanism. The inserts are not made to fire regular 12 ga rounds (chamber is shorter). But they are perfectly safe to fire our 12 ga flares - have done it many times with expired flares. These pistols are not built for firing 12 ga shot shells UNDER ANY CIRCUMSTANCES as the locking mechanism is too weak for that! I make 12 ga blanks using a small charge of regular propellant and a full size wad to hold it in place. I have done it for years without affecting the pistol's integrity.
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Old 06-17-2013
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Re: What do you have for a cannon?

Yep! Lotsa 26.5mm stuff here, and while most is E block; some even made in Germany and Austria. Mines Czech. Very rough and simple....soldier proof.
I am considering setting my 75mm "mortar" ( don;t worry... BP only, fuse lit and only for signals and marking! ) on the foredeck and launching a few pyrothechnics. While it was made for launching soup can "marking" rounds", it easily does double duty sending up commercial 3" 'mortar' displays.
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