ao adjustment

[robwelsh 354]

When my scopes set 30yards on ao on *3 mag its clear an crisp..then soon as you wind past x6 mag it goes all blury Untill I adjust it to just under 50yardsao and iv evenfettled with eye relief and it just gets worse ..any ideas? There's 3ft in a yard and I count it out by my feet , it done my nut in today ..all this was at 30yrds ,

[Mawders 595]

What scope is it? Mines a hawke sport hd. Sometimes I have to adjust my AO between 30 and 50 yards to see a target clearly at 30 yards. I don't really worry about it. I've heard the AO isn't accurate anyway, you can't use it like a range finder.

[robwelsh 354]

I been told I could use it as range finding ,but I never do anyway ..its a Hawke panaroma ev scope..so it doesn't matter then does it? Just set it to 50 and zero it at 30 Isit lol first time iv noticed as I don't really static / target shoot ..usually set it on 25 yrds ,and tweak it when I'm out..but tried new pellets and they were crap lol

[Mawders 595]

I wouldn't get to caught up on it being a range finder, they can't really be used as such, I use it to get a clearer picture on my chosen target by turning it up and down till its clear.

[tegater 789]

When my scopes set 30yards on ao on *3 mag its clear an crisp..then soon as you wind past x6 mag it goes all blury Untill I adjust it to just under 50yardsao and iv evenfettled with eye relief and it just gets worse ..any ideas? There's 3ft in a yard and I count it out by my feet , it done my nut in today ..all this was at 30yrds ,

Rob. The AO purely and simply focuses the objective lens, which then in theory gets rid of a lot of paralax issues. On quality scopes this is quite range accurate

As against the ocular diopter adjustment which focuses the reticle, and which once set shouldnt need adjusting again.

[robwelsh 354]

But by adjusting the ao to get clear image ..won't that put my zero out :s iv been told to set it and leave it at that, then zero scope and don't touch it.

[tegater 789]

But by adjusting the ao to get clear image ..won't that put my zero out :s iv been told to set it and leave it at that, then zero scope and don't touch it.

Who wants to shoot with an out of focus scope though. It shouldnt affect the zero that much if at all at the ranges you are talking about. The alternative, if you are not using it for rangefinding, is use a non adjustable objective scope.

 

I suppose the best thing to do though, is focus the scope at all the different distances you are likely to shoot at, and see what difference it makes to your expected poi.

 

Hope this helps.

[Mawders 595]

It makes no difference to the accuracy on my rifle!

[tegater 789]

It makes no difference to the accuracy on my rifle!

If it did, what would be the point of having a variable magnification scope, that changed its expected POI, every time you adjusted the focus.

[robwelsh 354]

So set your 25yrd ao, zero it to 25yrds, and if you see a rabbit 50yrds away its blury ,so adjust it to 50yrds and youl still have your aim points from crosshairs at 25yrds out too 50 ,is that correct? Aslong as it doesn't mess my zero/ mildots I'm happy

[tegater 789]

So set your 25yrd ao, zero it to 25yrds, and if you see a rabbit 50yrds away its blury ,so adjust it to 50yrds and youl still have your aim points from crosshairs at 25yrds out too 50 ,is that correct? Aslong as it doesn't mess my zero/ mildots I'm happy

What will mess your mil dot calculations, is changing your magnification, on a second focal plain scope. It still shouldnt alter your zero, but it will alter hold overs/unders etc. If that makes sense?

You may be confused with magnification adjustments, and objective adjustments.

[Mawders 595]

Agreed, I keep my scope on 10x mag no matter what range, poi stays the same with mildot hold over/under. Changing the AO won't effect your poi

[ghillies 209]

basically, the marking on the AO are pritty much decorative, even on hi end scopes they can be marked rong.

 

as for range finding your looking at 20 plus mag before even thinking about it. even with perfect periferal vision your mind will adjust and for want of words 'see more clear' than actualy is, plus at 6 mag theres a fair old ten yards plus in the perseived clear veiw.. even at 10x mag.(25 plus yards..thats a fair old ten yard is it not lol)

 

withough going into shimming your scope for the #perfect' angle, the AO and the zero distance are pritty much two seperate things if your using hold over/under, particularly for hunting.

 

your zero (ideally) is set for the pellet/power/BC to put sort of 1 dot up(hi tragectry point between the two cross points) cross hair and maybe 3 dots down for drop (after the 'far' cross hair point).

the AO is used as a vague range 'limiter', so that at say 13 yards its notisably blurred and some where at the range of 45/50 yards is blurred, that way you'll know if yor /too close/far' as a 'general' guide..(to aim way hi near to or its too far for effective killing sort of thing).

 

the higher the mag the less is in clear veiw, but your looking at 40-60 mag to get a good visial on a 2 yard gap in vision, that two yards is some where on the target..could be a yard and a half behind or in front in veiw.. that and trying to shoot stood hunting on 20 mag is posable but not always practable untill your at a hi leval of skill..on 50 mag...fff tis posable but its a night mare for all round hunting, like see the target turn up mag find it distance it then lower the mag then shoot it, meanwhile the target has been and gone several times over whilste you pissed about lol.

 

 

 

end of the day set the AO without looking at the print, wiggle your head and hold the gun still on a target, if the hairs move its outside the parrallex correction...on anything up to 4 mag theres probly 40 odd yars in the correction zone (or at least useable lol).

 

on 9 mag i get a zone from 13 yard to about 50...i set it depending on where the games at.. slight shift for nearer on a lower mag for ratting, 13 yard nearest for generalrabbiting, or a wee bit forther on the furthest infocus bit for those odd shots thats require a bit of zazz.

 

50-13=37 yards in view.. about mid way is where the AO is set to, so at 13 yards plus half the 37.. 18.5+13(from to minum distance it blurrs)=31.5 yard.. i zero at 33 for this set up with a heavey pellet on 9 mag. 11.2-11.4 fp. (.177).

 

 

so.....depends where your shooting at, as in how close to how far, the AO set to allow the distance you want to shoot to, not 'what the mags say or yu mates say' lolol...

 

 

nar then....all scopes vary ...so its try it set it.. then mark the positions on the AO that YOU WANT.

 

 

 

 

(a hint for learners, use a non AO scope first untill you suss your eye releif perfic....same head posision on your barrels true verticle line).

[robwelsh 354]

Lol I always had non ao ..and I didn't like it at first,but got used to it..but messed around with it again today..and couldn't understand how at 30yards it was blurry and had to be set at say 50yard on the ao, thought I was doing something wrong..but goes to show my scope was lying..tip ex comes out tommorow lol thanks anyway

[ghillies 209]

no problem lol... the manufacturere use the words 'within a tolerence of'.... (subject to poetic licence some times)