scope problem

[ftm 3,357]

im trying to zero a scope in for a friend and getting nowhere fast-the rifle is a pcp with a full charge and the scope is a hawk .both iin great condition for some reason or other im out by a good 12 inches in the height side of things ive tried clickingup to the maximum but still the same then took it all way down and still nothing .if i aim 12 inches high i can put pellet on pellet any help appreciated thanks

[scarecrow243 24]

1 if you have a sound mod on it try it without, if still the same the mounts can be wrong ie to low or to high this can cause to not have enough adjustment hope this helps, ps just a thought you do have the scope mounted the right way??

[Millet 4,497]

Is the scope new..?..if so as suggested try removing the silencer if it's not that give the barrel a good old clean if it's not that then the scope is fooked..if the grouping was only out by a inch or two it could be down to the power curve..but but flining them 12" out is a bit too much for that..i had similar problem's a good few month back and a good barrel clean solved the problem..one other thing are the scope mount's tight..

[ftm 3,357]

scopes are on the right way lol and are tight as they will go so i will take his mod off and give the barrel a good clean see if that does anything but 12 inches is a lot to be out isnt it? ive sighted afair few guns for friends but this has me baffled ,he may have dropped them and not telling me or something will try tomorrow and let you know -thanks for the replies lads-billy

[Millet 4,497]

I have dropped gun's and scope's before today and what you have described happen's ...what type of rifle is it..i have a s410 and it's been dropped several time's and the barrel is easily knocked out of line..easily fixed though..when mine was flinging the pellet out eraticaly it was the barrel that needed cleaning..out of 10 shot's 5 of them would be out by around 8" for no reason..

[ftm 3,357]

its a webley something millet

[thursodog 353]

Dropped my .22lr and bent the barrel which has a mod on the end. it shot about 18 inches out and the bend was visible.

I thought it was knackered but instead of shelling out money on a gunsmith (Yeah am a typical Scot lol) i got a straight edge and a steel pipe sleeve, fixed the barrel in my work vise and preceded to straighten out the barrel to the best of my ability.

Stuck the mod back on and zeroed the rifle again.

she's sticking subs in nice tight groups at 60 yards as good as before idiot here dropped her, well chuffed al tell you.

I don't suggest you try this but its what i did with a rifle that only cost me 50 quid and will see me out probably.

I've had to file some mounts in the past with jewellers files to get them cock on.

I start off by setting the horizontal and vertical turrets at mid way, fix the scope to the rifle and fire at a target at whatever range i'm zeroeing at.

If its close i simply adjust on clicks, if its way out i start filing tiny amounts off of the mount grooves until i reach zero ( sometimes takes a fair bit of time).

This ensures a good clear pic and all round optimium adjustment.

Must get a life one of these days

Hope you get it fixed.

 

Atb Chris.

[mangy1983 51]

I'm really starting to wonder if it is a problem with the scope. For example l once bought of eBay a 10 - 40 x 56 Tasco "Rifle" scope and fitted it to my air rifle and on having adjusted it to lower the pellet impact it was still hitting the target at about 8 inches high. On reading the scopes instructions l realised that the scope was specifically for full bore rifles and the minimum zero was 100 yards. I got around this by placing a sliver of aluminium under the scopes rear scope clamp to raise the scope at the back and it worked perfectly. I have never seen this occur since then but that was 10 years ago and the scope is now fitted to my .223 centre fire rifle and works perfectly imo

 

cheers Callum

[3175darren 1,100]

You will need to go round it very carefully,start with the mounts,are they the right size for the scope,are they secure,check every fixing very carefully,centre your cross hairs wind the windage right over to left,then right over to right, and count the turns,then half them back to the centre,same with the elevation, normally then with a rifle I would remove the bolt and barrel sight it to a target at about 15 20 yds,also go around the barrel bedding, moving a piece of paper between the barrel and the stock to make sure its free floating,once happy with that silencer off clean it and replace make sure its tight,check the focus ring on the scope is tight and wont move up and down on its threads,if the scope is variable make sure its tight and hasnt had a smack,dont forget to check the stock screws,make sure they are tight,I use thread lock on all mine to make sure, the problem is the scope is grouping only high,which makes you wonder if the scope elevation is knacked,however you will usually find its something simple,has the scope got locking turrets ?? as mangy says you can pack the rear of the scope, I used to use old camera film,I hope this helps I have no exp with pcp air rifles but I do find most scope problems are simple things

[sako 23]

If it's grouping well as you say just low, as has been said remove the scope and put between 1-3 pieces of film negative in the bottom half of the rear mount to rise the back of the scope. That's your problem, I had exactly the same problem with also a friends but was only 8 inches low...

 

 

Oooops just re read ops thread it states "ive tried clickingup to the maximum but still the same then took it all way down and still nothing"

Scopes kaput if the poi isn't moving when adjusting the height turret from one extreme to the other with no poi shift.

Edited January 5, 2012 by sako

[keeper 51 78]

i think you have answered your question yourself

if the gun is firing 12ins high the first thing i would do is shim mounts to rectify this before trying to adjust the turrets for such a large error

then adjust turret for final fine adjustment

however once the scope is fixed securely and you check your grouping regardless of hitting the desired aiming point providing the group is

consistent this rules out all other things mentioned

you tell us that your grouping is excellent so next thing is as you have tried the turret adjustment this you tell us you have tried if by adjusting

this both up and down and the impact point remains the same the conclusion must be they the scope is fcuked tell him to take it back where

he got it from and get another one best of luck

mike

[robwelsh 354]

try one of your mates scope on it, if it zero's its the scope, if not its the gun lol better off doing that than making shims etc..imo

Edited January 6, 2012 by robwelsh

[Ray0104 0]

Hi Ive used shims made from a beer can tin, also film negatives but I brought an adjustable mount a lot easier you can get a precise targeting by just tuning a screw on the scope mount , heres a link to a site that sells them for about £18

 

www.opticswarehouse.co.uk

 

 

Ray

[thursodog 353]

Nice one,

I'll give these a go in future instead of buggering about with shims and files etc.

 

Cheers Chris.

[robwelsh 354]

i would mate lol saves time, scope off other one on, try and result lol