Question about Tasco 3-9x40 World Class Riflescope 30/30 Reticle scope Clam Pack WC3940MD

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Scope fogged up on the inside and i cant see out of it. while hunting in the winter the scope fogged up. now that it is getting warm out it cleared up.

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The gas inside the scope has leaked out. Moisture condenses in the cold weather and fogs up your optics when this happens. Send the scope to the manufacturer and they will warranty it. All scope manufacturers have real good competitive warranties. TP

Posted on Apr 17, 2009

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Recently lost gun in water for a moment, Now scope gets fogged inside. Is there anything I can do to stop it? It a fairly new scope.


Your scope may not be hurt if water has not caused any rust yet. Things you will need, (1) hair drier, (2) Vaseline, (3) large clear plastic bag, (4) gas from a paint ball gun canister or similar type of inert gas you can use. Remove the eye piece, and shake as much water out as you can. Use the hair drier and heat the tube up, not too hot but warm, to dry the inside as good as you can, keep after it, shaking it and heating it. Once you feel all the water and moister are gone. Put a good amount of vaseline on the threads of the eye piece. The put the scope, the eye piece in the plastic bag. Use the paint ball gas and inflate the plastic bag, tie off the bag leaving room so you can screw the eye piece back on the main tube. Leave the scope in the bag for a few minutes before you do screw the eye piece on letting the gas fully get in the tube. The gas will give a bit of positive pressure inside the tube, Will displace any other air that will have moister in it. Keep the inside from fogging back up. The vaseline will help seal the gas inside. Hope this Helps Fix Ya up.

Apr 25, 2011 | Bushnell Sportsman Rifle Scope 3-9X 40...

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Scope is fogging up and appears to not be clear. Tasco 3x16


Fog in the scope means moister inside. You can try and dry it out, take the rear lens off and using a hair drier heat the tube and the lens separate. Do not blow air inside it may damage the cross hairs. You can try and pressurize the tube so it will not happen again. You will need a large clear zip lock baggy the biggest you can find. Once your scope has been heated with the hair drier. Put the scope in the bag. and try to draw out all the air inside. You can use a Vacuum cleaner. if you get enough air out you can reinstall the adjustment lens on and the tube should stay in a vacuum for a season or two. You can also put vasiline on the threads to help seal the vacuum. You can also try to use gas, you can use gas from a paint ball gun cylinder to pressurize the scope. Put the scope in the bag pressurize the bag and reassemble the scope with the gas inside.

Jan 09, 2011 | Tasco Optics

1 Answer

Recently hunting in the rain and scope became completely fogged up inside and will not clear


to be honest its only a cheap tasco scope and to get it fixed and re-gased wont be worth it, so you just as well have a go at it your self,, look at the scop tube and you will find a screw in the tube this is the re-gas port undo the screw and put the scop some were in a very warm place,,,dont cook it?
when its fully dryed out get some carbon dioxide gas (for blowing out cameras) and puff the gas into the scope to forse out any bamp air ,,,refit re-gas screw,,,,this may work till you get it wet again

Nov 22, 2010 | Tasco 3-9x40 World Class Riflescope 30/30...

1 Answer

I have a Bausch & Lomb Trophy Riflescope Balvar Years ago it fogged up while hunting on a cold wet day. I sent the scope in for repairs and got it back, put it back on the rifle and about the third...


most things can be fixed again however at what cost???
the scope should be striped down and cleaned new "O" rings fitted to keep out the damp and then re-gased,,,,pricy job?
you could undo the small screw on the scope body and try warming the scope up to force out the damp air inside it then get some "NITROGEN gas" not co2! and blow that into the screw hole to push out any damp air left in it out and to re-gas the scope,,,,it may work it may not,,,,the nitrogen gas can be found at a camera shop check on the gas first but i think its called "dust away or dust off!" for blowing out camera bodys
dont start a gale inside your scope just jentely blow in the gas

Aug 30, 2010 | Bausch and Lomb Bausch & Lomb Hunting...

1 Answer

When I look through my scope I can't ever get into focus. I have other people look through it also with the same results. The scope fogs up now in cold weather also


there is an air leak on this scope and bamp air has got inside it,,all you can do is strip the scope out clean all the lenses and re-gas it,,,,to be honest,,,its a bust bin job now!

Aug 24, 2010 | Bausch and Lomb Bausch & Lomb Hunting...

1 Answer

Scope is fogging up


Either use an anti-fog wipe on it, such as Scope Dope... or don't breathe heavily on your lenses!

Jan 01, 2010 | Tasco Hunting World Class Scopes Standard...

1 Answer

Rifle scope fogging


You can try to clear this your self. You will need a good sized clear plastic bag, say kitchen trashed can size. You will need to get your hands on some nitrogen or you can also use carbon dioxide. You will need some good electrical contact grease or Vaseline will also work. Take the focus lens off your scope, let it dry out. Now ck for any o-rings and try to find new if you can, put the grease on the screw threads.Put all the scope parts in the bag and pump up the bag with your nitrogen and tie off the bag but leave room so you can screw the lens back on once it has set for a little bit in the gas. This should let gas stay inside the scope so no moisture can get back inside to fog it up. Try that, sounds crazy but it will work.

Dec 03, 2009 | Optics

1 Answer

Fogged up


What is happening is, when the scoped hunting firearm is stored inside the night before the hunt and its warm inside the house and when you go outside in the cold, the scope fogs up. Much like someone who wears glasses, when they are inside a warm house and they go out in the cold, their glasses fog up. The way to prevent this is to store the gun outside the night before the hunt where it's still secured but cool like the outside. Lock it in the trunk of your car or a locked tool box in your truck. In this way, the scoped hunting firearm will be about the same temperature as the cool outside air and it will not fog.
 
 
 

Aug 20, 2009 | Optics

1 Answer

Lens Fogging Issue


Apparently this is NOT a waterproof rifle scope. I would return it as you will have this same problem only worse out in the field. Buy a waterproof nitrogen filled rifle scope.

Dec 06, 2007 | Bushnell NorthStar 78-8890 (300 x 90mm)...

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