Now there is real Birthday present, congratulations and Happy Birthday our friend.

JLouis

Dave, I don't intend to use the scope for NRA BPCR Silhouette... Ridgeway R&PC has a 1000yd High Power Silloutte range.  
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There is no stipulation that the rifle has to be a bolt gun
3.1 High Power Silhouette Rifle
A rifle, 6mm or larger caliber, meeting the following specifications:
(a) Maximum weight 10 pounds, 2 ounces, including sights 
(b) Any sights, telescopic or metallic may be used. Scopes may not be more than 2 inches above the rifle as measured from the top of the receiver to the underside of the scope tube, nor may the scope be offset from the top center line of the receiver
3.17 Ammunition-
Centerfire ammunition having a projectile (bullet) of 6mm or larger caliber but no armor piercing or tracer types are permitted.
Nothing in the NRA rules says it can't be a single shot ("A rifle") with lead bullets.  The CPA with scope makes the weight & scope height limitations.

Anyway, probably not many matches and didn't want to invest $2.5 - $4,000 for a 6mmBr with a Leupold scope, tricked out.  But when I go to Ridgway for a week at a time, I've always had a burning itch to knock down a coyote at 1000. Last May I took my K-31, stock open sights, up to the range and did manage with many sighters within inches to put a couple  over.  The crows at 700yds - different story.   

So I figured, a 20X Unertl on the CPA using smokeless 40-65 or 45-70's on barrels that I have would be just the ticket to to enjoy shooting these steels ... plus more center hits on Homer, the 1000yd buffalo 

Dave, sorry but this 20x Unertl is going to be a keeper.  Just too many nice things going for it - 1, the condition - 2, the power - 3, I don't have a 20X and 4, don't believe I could find a 20x with the extra eye piece for the price I paid

Occasionally the 20x Unertl's come up on the Canadian Gun Nutz ( I know it's an odd name web site.  I recently bought one from a fellow in the interior of B.C., and bought an 18x from someone on the site a while back.  They go quite quickly though as both of mine were bought within a couple of hours of them being listed.  I was just lucky on the timing.

Chris.

What is the extra eye piece for?  Is it a booster? Just an extra eye piece?   


    Joe.

Joe, I'll give it a try

Please, John. What is it for?

  Joe.  PS, Biggi wants to know too.

Okay, got all that. So the extra eye piece is just an extra? Or you don't know your own self and that's why you can't answer.  One little ole eyepiece, phew!   

    Joe.

In the process of designing a scope. Numbers say about 15X maximum for an 1.5" objective. Higher magnification and you start to loose brightness on cloudy days or targets in the shade. Any comments?
Chuck

Chuck,

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Gents - Hijack at will!  The more we learn about these scopes the more educated we become, especially me.

OK, something I have never seen in the reference books that I have about scopes.  So, go back to the link above ... 
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Look at the information that Dewy Greiner has on his site for all the Unertl scope models ... Power - Field (ft) & Lumens

Because both the oculars on the Unertl are not stamped and not a whiz bang with math - I'm going to take the oculars to my friendly optometrist and have him measure the power of each 

Quote:

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Quote:

Quote:

"I was at the range and the light wasn't too good, it was only 30,000 lux.  Every range box needs a lux meter and posting 'it was cloudy' is now passe   

I presume also, one can put the meter in front of the scope and measure how well it gathers outside light

westerner wrote on Dec 7^th, 2013 at 6:05pm:

Update to respond to Joe's post:
*  Found in my references - Cornell Publication's - 1956 Unertl Catalog reprint, 37 pages with all one wants to know about Unertl's
*  They list Interchangeable High & Low Power Eye-Pieces for their scopes to increase or decrease power:
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Turn the page-pg 30, Unertl 1 1/2" Target Scope.  I applied the two eyepiece's power increase & decrease to my 20x scope:
20x < 35% = 13x ... the lower power eye piece
20x > 35% = 27x ... the higher power eye piece
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Turn the page - pg 36, Physical and Optical Propertied. and Dimensions of Unertl Scopes ... including 1956 prices

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In 1956, one could buy the 1 1/2, 20x - 25" tube & extra eye piece for $97.50.  Inflation adjusted from 1956 to 2013, the scope & eye piece is $836.16 (758.6%).  Guess I found a deal - I paid $395 plus $15 shipping ... a real Happy Birthday To Me! 
Turn myself in at the nearest police station?
Nope Red, going be a fugitive for this purchase

Thanks John,this is great info on these Unertl scopes Regards--Fritz