Steve k 0 Posted January 25, 2011 Report Share Posted January 25, 2011 First of all hello this is my first post here ! can any one tell me the advantages or disadvantges of having AO on a scope as i am looking at getting a new scope and i am a bit confused with the whole thing, i am a keen hunter mostly squirels and woodies and do some target shooting ,the scope i use at the moment is an old tasco 3-40. looking forward to your comments. all the best Steve.. Quote Link to post
pianoman 3,587 Posted January 25, 2011 Report Share Posted January 25, 2011 Hi Steve and welcome to the section mate. The first advantages with front-lens focusing AO ( =Adjustable Optic)scopes is that they give you the widest degree of control over your rifle's sighting accuracy; and they correct a fair amount of your parallax error -or the angle at which your eye views the reticle (the crosshairs) over the intended point of impact on your target. Get it wrong and you'll see nothing but a dark blurr from the inside edges, get it right and you'll see your target perfectly well. You can sharply focus your sight picture and accurately estimate the ranges beyond what you existing scope may allow you to do. Not all AO scopes are accurately range-calibrated with the distance figures etched on the focus ring. You can make an extemely accurate aiming and rangefinding scale by first, measuring your ranges with a steel tape measure and mark them on your scope's focus ring. Measure ranges in 5-metre increments out to 60 metres (it's unlikely you'll need to shoot further than that!). Mask each off with a very fine line between two edges of masking tape at the white marker dot and use Humbrol model enamel paint to mark the line. Remove the masking tape and you have a professional looking range mark that is dead on the distance. Do it one mark at a time, letting the paint dry well between each application. Start with your home/ garden plinking set up if you have one. Mark the range you normally shoot at. Wind the scope ring all over and back to your mark and you'll back in perfect focus. 3-9X40 is fine for most airgun hunting scenarios but, I much prefer 4-14X mag, 4-16Xmag and 6-18X mag AO for Hunting and target shooting uses from a single scope. You always have lower mag settings to zoom down to in low light conditions and higher mag when you need to search the long scrub for a wary rabbit hiding in it and nail him! Disadvantages? well, they tend to be a little heavier than fixed mag scopes but, hardly worth a mention really. Simon 1 Quote Link to post
Steve k 0 Posted January 25, 2011 Author Report Share Posted January 25, 2011 piano man thank you very much for your clear and easy to understand answer many thanks Steve Quote Link to post
Phantom 631 Posted January 25, 2011 Report Share Posted January 25, 2011 (edited) Hey Simon May I be a pedantic old git? AO = Adjustable Objective as it's the objective lens that is moved in/out to focus (you can punch me in the chops at the meet buddy :11: ) But other than that Spot on and well worth the SPA Phantom Edited January 25, 2011 by Phantom Quote Link to post
pianoman 3,587 Posted January 25, 2011 Report Share Posted January 25, 2011 (edited) Dammit why did I state Optic? Aye! ADJUSTABLE OBJECTIVE Sorry gentlemen; my honest mistake :icon_redface: Aww you know what I mean! Edited January 25, 2011 by pianoman Quote Link to post
Phantom 631 Posted January 25, 2011 Report Share Posted January 25, 2011 :11: we all make the odd gaff here and there Quote Link to post
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