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tight fit bullet

A place to ask general spud cannon related questions.
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tight fit bullet

Unread postAuthor: neilman88 » Tue Oct 25, 2005 8:30 pm

ive noticed that the more snug the ammo is the louder and faster AND harder it shoots

this is because the explosions work even harder to get oxygen right?
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Unread postAuthor: TalonXxX » Tue Oct 25, 2005 8:42 pm

also a snug fit allows for more pressure to build up and pack behind the ammo. ie, the more pressure the greater the initial velocity and force would increase as a result.
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Unread postAuthor: neilman88 » Tue Oct 25, 2005 8:50 pm

ok sweet im gonna start to make all my bullets very snug now
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Unread postAuthor: drac » Tue Oct 25, 2005 9:03 pm

Talon pretty much hit the nail on the head. With a tight fitting projectile, there is virtually no blowby, which allows the projectile to harness more energy. Also, since none of the energy escapes around the projectile, it is released fromt the barrel as sound, hence the BOOM!
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Unread postAuthor: neilman88 » Tue Oct 25, 2005 9:09 pm

ok cool i need better ammo for my 3/4 in width barrel any of u guys know of any excellent ammo for that size

i looked on the ammo page but i cant find anything for that size...

thx
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Unread postAuthor: drac » Tue Oct 25, 2005 9:25 pm

get some 3/4 inch wood dowel, and wrap it with some electrical tape. fits perfectly
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Unread postAuthor: neilman88 » Tue Oct 25, 2005 9:39 pm

wood dowel? can u put up a link or something i dont know what that is.... :?
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Unread postAuthor: Ballad_Black » Tue Oct 25, 2005 10:53 pm

Its like a cylinder of wood roughly. But basically.
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Unread postAuthor: neilman88 » Wed Oct 26, 2005 12:54 am

ahhhhh i see...i looked it up..ok sweet im gonna fix my camera so pics will be in soon
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Unread postAuthor: alex bennett » Thu May 11, 2006 8:54 pm

becarefull not to plug your barrel, by using a projectile too snug. When I snugged a capaciter from a broken amp in my barrel my end cap blew off and back about 15'. I use packing to prevent blowby, just any cloth, get a rod and pack it to the end then you can place objects on top and they will perform better. Happy Shootings.
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Unread postAuthor: Andrew52 » Fri May 12, 2006 1:21 am

a few pennies glued togeter with a pst it not around them works good me and my friend embedded the words in god in a popcorn can
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Unread postAuthor: A-98 » Fri May 12, 2006 1:34 pm

a fun (not that loud )ammo is wadding with a ton of airsoft bb's infront of it (mega airsoft shotgun)
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Unread postAuthor: Jakal444 » Fri May 12, 2006 2:47 pm

THink of it as an unhithered pneumatic ram, rams work better if they have an O-ring around them. Why? The air/hot gases are constantly trying to push against every part of the gun and since the ammo is able to move it will be pushed. However if there is clearence the gases will escape round the sides and those gases will be lost. When you have a rifled barrel this effect is useful however, since the gas spins round the projectile in a forward spiral giving the projectile its twist. This is why rifling works.
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Unread postAuthor: Pete Zaria » Fri May 12, 2006 3:12 pm

Jakal444 wrote:The air/hot gases are constantly trying to push against every part of the gun and since the ammo is able to move it will be pushed. However if there is clearence the gases will escape round the sides and those gases will be lost. When you have a rifled barrel this effect is useful however, since the gas spins round the projectile in a forward spiral giving the projectile its twist. This is why rifling works.


About rifling, I disagree. Rifiling works because when you fire a projectile down a rifled barrel, the rifling litterally carves spiraled grooves into the projectile. Also, since the rifling spirals down the barrel, and the projectile is forced to twist with the grooves, the projectile exits the barrel spinning, thus stabilizing it the air. The longer the barrel, the more stable the projectile will be in the air.

Peace,
Pete Zaria.
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Unread postAuthor: Potato Destroyer » Fri May 12, 2006 4:20 pm

I agree with Pete Zaria [/quote]About rifling, I disagree. Rifiling works because when you fire a projectile down a rifled barrel, the rifling litterally carves spiraled grooves into the projectile. Also, since the rifling spirals down the barrel, and the projectile is forced to twist with the grooves, the projectile exits the barrel spinning, thus stabilizing it the air. The longer the barrel, the more stable the projectile will be in the air.[quote][/quote][/list]
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