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scope choice

A place to ask general spud cannon related questions.
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scope choice

Unread postAuthor: Lockednloaded » Fri Dec 24, 2010 5:06 pm

I want to buy a low powered scope for my most recent gun. It is 3/4" bore and full metal, so its pretty damn accurate with co2 capsule bullets. I want to buy a scope for it eventhough a red dot sight or iron sights may be much more practical. My maximum shooting distance will be a little more than 50m, so nothing too powerful. My budget is 50$, but I don't really want to spend all of it.

I've never bought optics before, so I have zero experience. I'm confident most people here will know what they're talking about and point me in the right direction
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Unread postAuthor: saefroch » Fri Dec 24, 2010 6:26 pm

I reccomend the scope I'm currently using, a Tasco RF4x15. I was amazed I found a good 4x scope for $7 at Wal-Mart. You'll need a rail to mount it on though.
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Unread postAuthor: Gippeto » Fri Dec 24, 2010 6:58 pm

Most scopes for rifles will have the parallax set at 100 yards/meters. Not optimum for you.

There are SOME scopes designed for .22Lr and airguns that have the parallax set for 50 yards/meters out there...you'll have to check.

You may look for a scope with adjustable parallax ... often termed "adjustable objective" (AO). Side parallax is not in your budget. :)

Semi decent, low budget scopes can be had under the Leapers brand.

4x magnification should be plenty for your uses...a larger objective lens is something I consider a "must have". Light transmission through the lenses is never 100%, so you have some losses in this area. Bigger lenses allow more light in...you get more light out...brighter picture when the light starts to fade.

I would not consider anything less than 32mm for the objective lens.
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Unread postAuthor: Lockednloaded » Fri Dec 24, 2010 7:29 pm

I'm leaning towards a red-dot with 2 or 3x magnification, but if I do get a 4x32, I've found one with a mil-dot reticle and a rail
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Unread postAuthor: Technician1002 » Fri Dec 24, 2010 7:36 pm

I used a Tektronics Digital Storage Scope.. :D
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Unread postAuthor: Zoltar9879 » Sun Dec 26, 2010 6:44 pm

how does that store the info when you shoot? do you have to line the cannon up with the sight or does it work like a paintball crono where you just shoot over the top of it?
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Unread postAuthor: Technician1002 » Sun Dec 26, 2010 7:34 pm

Info on using the digital scope is here;
https://inteltrailblazerschallenge.wikispaces.com/Barrel+length+trim+method

The digital storage leaves the last trace on screen so I can move cursors and measure it. I can then print or save the result. A normal scope does not have the ability to save a one time event. Due to the lack of a portable PC at the time, I used hardcopy on the printer.

The time for the projectile to travel between coils spaced evenly gave the average speed between them. This was used to find the rate of acceleration in the barrel. Acceleration is measured as change in time from one interval to the next. Velocity is measured with the inverse of the time to travel a foot.
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Unread postAuthor: Zoltar9879 » Mon Dec 27, 2010 3:44 am

Very neat. Thank you for the info Technician1002 :D
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Unread postAuthor: jakethebeast » Mon Dec 27, 2010 5:48 am

Bauer 3-9x42 is good scope, prallax is from 7-200, made for airguns.

okey but that costs 250€ but its very good scope :D
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Unread postAuthor: timing » Thu Mar 03, 2011 2:21 pm

Try [url]href="http://www.testfreaks.com/spotting-scopes/"testfreaks[/url] you will find great scopes.
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Unread postAuthor: jackssmirkingrevenge » Thu Mar 03, 2011 2:58 pm

timing wrote:Try [ur href="http://www.testfreaks.com/spotting-scopes/"l]testfreaks[/url] you will find great scopes.


Poor timing :D
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Unread postAuthor: mark.f » Thu Mar 03, 2011 9:48 pm

Honestly, any scope you buy will be overkill for a homemade gun. While the projectile may seem accurate, once you hook up the scope you'll find your rounds are all over the place.

I would suggest just a regular red-dot.
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