scope not holding zero

[cooksey13]

i know my scope isnt holding zero due to the springs inside it being to weak would it be possible to fix them my self or is it a specialist job and how much would it cost?

[air-tech]

Not sure where to start from!

[cooksey13]

right basically the springs inside the scope that hold keep it zeroed are weak so it means they more around and wont hold zero from the research i did and i remember reading somewhere that the problem can be fixed but i was wondering is it a job i can do my self or a specialist job

[oliver13]

If you dismantle a scope with Nitrogen in it you'll run the risk of condensation & such like but based on my experience from years back, the only problem is working out how it was assembled & reversing the process. When I rebuilt the ones I messed with they worked just as well as before but that was BSA & Webley own brands from the 70's & 80's.
I've been inside a few pairs of binoculars more recently & I'd say the main issue was threadlock & glue everywhere.
It's clear users aren't expected to dismantle them but if you've nothing to lose I'd say go for it, if you can work out the secrets ot their assmbly I'm sure they won't be too difficult.

I've got a broken no name 4x40 in the loft somewhere which I was going to dismantle to see exactly what was involved nowadays, just haven't had the time, if you want I can hunt it out & do a few photos as I reduce it to it's basic components. I'd prefer to use a screwdriver butI have plenty of spare diamond discs for my angle grinder as well....

[cooksey13]

got nout to lose so might just crack on with it and see if i can work out how to sort it

[Two200's]

Before you reassemble the scope.
Warm it up lots with an air dryer.
That helps seal it - however nitrogen purging is the right way to go.
Good luck.

[Waisted]

Out of interest what is the make and model of the scope.

[cooksey13]

Got 2 a BSA sweet 17 and a richer optiks 4x32

[Gwylan]

I've never heard of springs being "weak" before, sticking, yes. If the same thing is happening to both scopes, I think the odds are millions to one against. Check that your stock bolts and mounts are tight, and the anti recoil pin is in place. The recoil may have shaken something loose inside, if you shake the scope, does anything rattle? Check that the eyebell adjustment isn't loose, that can affect it. Even if you can get the bits, (unlikely,) repairing cheap scopes just isn't worth it.

Gus

[tugg]

I have had to fix a scope before where the erector spring had dropped and lost all windage adjustment. it was an easy fix .I removed the front ao and with a long screw driver I was able to move the spring back to its right position. of course the gas if any would have escaped if it hadn't of escaped already, was no longer there but it now worked and was usable once again.
sometimes zero shift can be due to the adjusters stick on the erector tube if you remove the turrets you can add a small bit of grease to make sure the tube slides better.

[hareng]

If the same thing is happening to both scopes, I think the odds are millions to one against. Gus

Certainly wouldn't rule that out having seen and tried to use 11 high end scopes last 3 1/2 years each one 100 times dearer than the Richter. There are loads of scopes across the spectrum people cannot comprehend it should happen and the first thing I check before removing the tags. You would be highly surprised at some other big names that shift zero and nothing to do with turrets, in fact its becoming quite common.

Strip it down, nothing to loose, if fails sling it.

[tugg]

why not try to optiacally centre the scope using the mirror and torch method then knock it about and see if it moves of centre.

[oliver13]

There isn't actually much inside them & it's pretty straightforward to get in there, I've never been inside an expensive scope but I'd expect it to be the same as the cheapo jobbies, just a better standard of screw cutting & glass - & probably not so much glue slung around in there.

I left a pair of Chinese binoculars on the dash when I was working in Libya. The insides pretty much fell apart because the glue melted, the entire lens array looked like it was assembled in a jig & then a few spots of Tippex were used to hold it together.

[amc577]

This firm advertises scope repairs to most models....worth a phonecall?

http://lkscoperepair.webs.com/

amc577