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help me please with scope issue

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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help me please with scope issue

Unread postAuthor: Dumb-kid » Sat May 17, 2008 3:32 am

ok From the barrel how high dose the scope have to be?

I tried gluing the scope rail on the barrel then clip and screws on the rail
but its still not accurate

so any one with a solution feel free to sugess
thankz :(
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Unread postAuthor: benstern » Sat May 17, 2008 3:56 am

Spudguns are so largely inaccurate that scopes are not useful.
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Unread postAuthor: Dumb-kid » Sat May 17, 2008 4:00 am

ohh fare enough

but even for a custom made 15.5 mm barrel
for marbles?
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Unread postAuthor: Carlman » Sat May 17, 2008 4:08 am

i used one on my marble gun and it was fairly accurate at 50m or so, i used a block of wood that was all square and drilled a hole for my barrel to go through and mounted the rail on that.
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Unread postAuthor: psycix » Sat May 17, 2008 3:35 pm

THe shortest possible. The higher the scope, the bigger the angle between em is needed for a certain distance.
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Unread postAuthor: daxspudder » Sat May 17, 2008 3:42 pm

first attach your scope with something that will allow adjustments. due to the quick fall of ammo, youll need to have a range scope which is complicated to make at home, and likely will not resemble what you want. for a marble gun i would just look down outer edge of the barrel.... if you have ever learned about history and the poor performance of musket balls you would know that a scope on a marble gun is useless, unless you use batteries or something that will make some attempt to fly straight.
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Unread postAuthor: nivekatoz » Sat May 17, 2008 8:03 pm

You could use ammo like dart ammo. That should fly stright.
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Unread postAuthor: OuchProgramme » Sat May 17, 2008 8:07 pm

psycix wrote:THe shortest possible. The higher the scope, the bigger the angle between em is needed for a certain distance.


Thats what zero-ing in for is

Lower is suggested
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