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Contributing Member
Alaskan sniper scope mods
Hi ,
I read somewhere that Alaskan No 4Tsniper scopes were modified before fitment, to improve their waterproofing, and I'm supposing usability, is this one of the modified scopes. I see it has 4 numbers added but not the s. View my photo's for image. Thanks
Regards Ian
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Last edited by harlton; 11-02-2013 at 06:37 PM.
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11-02-2013 05:56 PM
# ADS
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Advisory Panel
Hello Harlton, the scope you show is a pre-war commercial. If you search back you will find a post I made where I showed pictures of each type of Lyman Alaskan and their turrets.
Lyman Alaskan Scope - history value
Last edited by Lee Enfield; 11-04-2013 at 12:04 PM.
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Contributing Member
Turrets,
Hi BSN,
Thanks for getting back to me, and posting all that info very helpful, and much appreciated.
Regards Ian
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What about posting the references on the thread so that computer idiots like me can find them easily......
But if the Alaskans were modded to make them waterproof, all I can say is that you don't get a lot of rain in Canada
! When we trialled them here, the waterproofing was dire! Mind you, so was everything else mechanical about them. Optics got a good report though!
Last edited by Peter Laidler; 11-03-2013 at 08:45 AM.
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Advisory Panel
How is the waterproofing actually tested? Pressure tank? Simple immersion? Prolonged spray exposure?
Recently got a book with a good cutaway illustration of the Alaskan. Can post it if it would be of interest to anyone.
The locking collar on the adjustable eyepiece would be the most obvious leak-prone area I suppose.
“There are invisible rulers who control the destinies of millions. It is not generally realized to what extent the words and actions of our most influential public men are dictated by shrewd persons operating behind the scenes.”
Edward Bernays, 1928
Much changes, much remains the same. 
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Contributing Member
Ducks and Beavers
Hi Guys,
I did read that this was a wartime mod, and it removed the ability to refit the caps, made adjustment more sensitive and increased waterproofing. As the U.S.A. was flinging o-rings at everything during the war from my understanding. Plus I've never seen one like that before, I put 2 and 2 together and made 5, sorry. Although it does seem like a good candidate for some modification.
immersion would seem reasonable to me,as a test. My main reason for the question is I've never seen a modified one. I know the articles around somewhere. I can see where the caps would be a bloody nuisance, and lost in short order, I remember it was our lads and not U.S, armorers doing it. Just hoping to learn something, which I all ready have, many thanks.
Regards Ian
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It is usually done in a moisture laden environment/room. It's the vapour that does it. Once it's in there, it just mists up as soon as the atmospherics change and unless there's a desiccation facility in the tube, it's there for good!
There were also concerns about the lack of range markings too. The biggest was what do the clicks equate to?
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Advisory Panel
It is usually done in a moisture laden environment/room. It's the vapour that does it. Once it's in there, it just mists up as soon as the atmospherics change and unless there's a desiccation facility in the tube, it's there for good!
There were also concerns about the lack of range markings too. The biggest was what do the clicks equate to?
Clicks are 1"
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Thank You to Lee Enfield For This Useful Post:
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Originally Posted by 
