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mounting a scope

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mounting a scope

Unread postAuthor: pat123 » Thu Jul 19, 2007 3:41 pm

I have a scope for a bb gun. I also have a laser. which one would be easier to mount and which would be more accurate.
i tried to mount the laser with a hose clamp but it moves a little bit so it's not very accurate.
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Unread postAuthor: Pete Zaria » Thu Jul 19, 2007 3:49 pm

What kind of gun are you mounting this on?

Most potato cannons have very poor accuracy, except perhaps ones that shoot BBs, ball bearings, and marbles from long-sh barrels.

I've tried mounting a laser to my combustion gun and the projectile rarely hits within 6" of the dot.

To be honest, it's probably a waste of time. I'd definitely go with the laser over the scope, though.

I'd use hose clamps or zip ties to get it lined up right, and once you have it in the *exact* spot you want it in, use some epoxy to affix it permanently.

Have you rigged up a remote button for the laser? You could put a button right next to your "trigger" for the laser.

Peace,
Pete Zaria.
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Unread postAuthor: Marco321 » Fri Jul 20, 2007 7:29 pm

Hey
I have a scope for my pneumatic gun, i use darts and sometimes marbles. It used a 20mm weaver rail to hook into the gun, so i just flattened a piece of pvc, cut it to a rectangle, 80mm x 22mm. I then got another piece of pvc pipe, 20mm O-D and glue that onto the gun, then the rail onto the pipe. This elevated the site enough to look through. The scope then hooked on, i then adjusted the sight on the X and Y axis to suit the gun at around 50m. It works very well.
The problem with a laser sight is that the actual laser may not be centered and unless you have a way to adjust it for elevation and wind its not much use.
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Unread postAuthor: mark.f » Sat Jul 21, 2007 8:09 am

Depending on the scope make, (either for airguns or firearms), the clamps are going to be different sizes.

For airguns, the rails are made to be 3/8" wide. For firearms, the rails are, usually, around 7/8" wide, which is called a "Weaver" rail. If you're planning on using a firearm sight, then get a 7/8" rail.

Next, buy a scope rail. Gunsmiths install scope rails pretty much the same way for all rifles without mounting hardware already attached. They carefully measure to the center of the receiver, and the distance between the screw holes on the rail, and then they simply tap the receiver to #6-32 threads where the holes should be and then just screw the rail on. This wouldn't be too hard to do with a spudgun. If you drill into the air-chamber, though, just make sure it's through a double-thickness of pipe, and then add a nut on the inside with some sort of rubber sealing washer.

Just remember, the more carefully you measure each hole, the better your scope will perform. If it's out-of-axis with the bore, then you will have problems with your scope not only having to intersect the trajectory vertically, but also horizontally, which creates problems when shooting at different ranges. The gold standard is just to measure the width of the receiver with calipers, divide this by half, set the calipers to this distance, and then mark the receiver with marking chalk, (or in the case of PVC, a felt fine-tip pen). Make sure to install the rail where you'll have enough scope adjustment to give yourself proper eye-relief when mounting the gun.
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Unread postAuthor: Jumpin Jehosaphat » Sat Jul 21, 2007 11:24 am

You could use a homemade scope mount like I did on my pneumatic.
Here is a picture of it.
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If you want to try to replicate this type of scope I wrote a mini tutorial on how to build it at the bottom of the first page on this thread.
http://www.spudfiles.com/forums/tactical-sniper-rifle-t8812.html
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Unread postAuthor: markieclarkie » Wed Sep 19, 2007 8:37 pm

Guns with one of spudtechs rifled barrells are pretty damned accurate. I made a simple adjustable for elevation sight for one of mine and could consitantly hit beer cans from a couple of hundred feet away. the trick is how you load the spud. I like to use an Idaho russet, cut in half so its shaped like a bullet. then carefully breech load it, so its nice and straight. If you don't load it straight it'll corkscrew through the air. Wich looks very cool but you wont hit anything (on purpose at least.)I also had similar results with a laser. once I had it dialed in, it was pretty damned accurate. there is a nice picture of a breech loading combustion rifle on spudtech. under "new developments"
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Unread postAuthor: chartreusesnot » Wed Sep 19, 2007 8:41 pm

where can I get a very cheap small scope?
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Unread postAuthor: A a r o n » Wed Sep 19, 2007 8:53 pm

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Unread postAuthor: chartreusesnot » Wed Sep 19, 2007 8:55 pm

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Unread postAuthor: pyrogeek » Wed Sep 19, 2007 8:57 pm

Check Walmart. They have cheap BSA airgun/.22 scopes for under $20, as well as some $40 shotgun and rifle scopes.
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Unread postAuthor: Blackett » Wed Sep 19, 2007 11:11 pm

pyrogeek wrote:Check Walmart. They have cheap BSA airgun/.22 scopes for under $20, as well as some $40 shotgun and rifle scopes.


shotgun scopes? doesn't that seem a little odd unless your only gonna shoot slugs?
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Unread postAuthor: pyrogeek » Wed Sep 19, 2007 11:14 pm

They have the shitty like 4x scopes and red dot ones. I guess you could put them on a crossbow or something, but I think a shotgun is what they are meant for.
And yeah, either slugs or if you are hunting turkeys and using tighter patterning shotshells. Although if I hunt again, I'm just going to get a normal rifle scope to replace the red dot I have now.
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Unread postAuthor: jimmy101 » Thu Sep 20, 2007 10:14 am

A scope or a Red Dot will probably work better than a laser.

Take your laser outside and point it at a target ~50 feet away. Can you even see the dot in bright daylight? Try pointing it at a bush, still see the dot? A laser wroks great in dim light but they are frequently invisible in bright sun.

A cheapo scope would be fine but you have to get your eye pretty close to most scopes, particularly cheap ones. To keep from jamming the scope into your eye you'll need an effective butt and shoulder rest on the gun.

Red Dots are nice because you don't need to get your eye very close to the scope. For a scope, Red Dot's are pretty cheap but they are much more expensive than the $5 scope posted earlier.
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