Just a thought on these eye bell adjusters, if you were to unscrew them as far as possible so they came away from the main body completely, would you lose the vaccuum or rather purged air from within the main tube?
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Just a thought on these eye bell adjusters, if you were to unscrew them as far as possible so they came away from the main body completely, would you lose the vaccuum or rather purged air from within the main tube?
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They shouldn't come out...Originally Posted by Portzy
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Thnx
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Well, all info seems positive enough for me so on the strength of that I have just placed an order for one.
Thanks again,
He's from up North
I have owned a couple recently and would rate them as good value for money. I would also suggest that many scopes in this particular price bracket do tend to lose zero if the parallax setting is altered along with the zoom. My own way around this was to find the optimum position for both and leave them. This is of course not that practical, so it might be worth those purchasing such scopes to try and confirm your zero settings if you keep moving the settings and making a note of any change to your point of impact. More expensive optics do not tend to suffer from this, which, in addition to the quality of the lenses, is why some shooters pay a lot of money for a quality scope.
Andy
Member, the Feinwerkbau Sport appreciation Society (over 50's chapter)
http://www.rivington-riflemen.eu/ Andy, from the North !
If a scope moves POI with alteration of the parallax then it is faulty and should be returned!
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I have a Nikko Mountmaster 3-9x50AO which suffers from the same problems as Amec outlined.
I recently read some posts along the same lines suggesting that the optical centre is not aligned with the mechanical centre of the objective lens on cheaper scopes. This results in the POI describing a circle as the objective lens is rotated for parallax adjustment.
I just accept it as a lesson learned about cheap scopes and re-zero if I adjust the parallax.
I also have a Hawke Sport HD (HK series) 4-12x50 which is not a PA scope but was easily adjusted on the objective lens to suit airgun ranges. This is certainly adequate for my needs, as the depth of field at the magnifications that I favour provide a sharp image with a consistent POI. The parallax error is now minimal.
I will avoid choosing a PA scope in future unless I am prepared to spend a substantial sum and get a side focus rather than an objective bell adjustment.
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