Scope question

[big napper 3,559]

Just wanting to know if temperature can interfier with scopes as the last few times iv been out iv had to rezero and not just a few clicks, the guns kept in a coubard (its quite warm) and its been cold days the past few times iv been out,

Can that be why or is the scope fu**ed

Cheers for any help on this

[PLEDGEY 493]

I've had lots of different scopes and I can't say I've ever had any problems that were temperature related. The only minor niggle,  when it's cold, is I get condensation on the ocular lens from the hot air that I breath out.

[Rez 4,957]

Temperature knocks my zero off all the time. It's never me  

Dunno mate. I would hope not. Perhaps it would need to super extreme in both directions to effect anything, heat expanding, cold contracting kinda thing. 

Good question naps.

[mattwhite 1,992]

It shouldn't effect it pal.

If it was a Springer and you were out in real cold conditions after zeroing on a warm day I would chuck a guess at the lubricant thickening and effecting the internals enough to bugger things up but I'm pretty sure a pcp is virtually immune to this. Its a real daft thing to suggest but could you be overtightening the mounts or scope when you check it pal? 

Just a thought as that's the first thing I go to when something's not quite right?

[mark williams 7,549]

Did I read somewhere that a spring rifle zero gets effected by the cold ?

                    Saying that BN are we talking spring rifle or pcp ?

 

 

[mattwhite 1,992]

3 minutes ago, mark williams said:

Did I read somewhere that a spring rifle zero gets effected by the cold ?

                    Saying that BN are we talking spring rifle or pcp ?

 

 

You did pal. Its down to the lubricant and how much is in there?

[si brown 8,486]

bn uses a hw100.. ive heard of people stripping the grease out cos if theres to much it loses power on cold/freezing days!

theres a thing on youtube about it sure it was only about 1/2ftlb might be enough to alter the  zero  but not to sure!

do a chrono at home bn and one when your out in the elements.

 

the 100 I bought a few months ago had that much grease in it fist thing I did was strip it cos it was doing 10.5 instantly went up to mid 11's

 

 

[mattwhite 1,992]

3 minutes ago, si brown said:

bn uses a hw100.. ive heard of people stripping the grease out cos if theres to much it loses power on cold/freezing days!

theres a thing on youtube about it sure it was only about 1/2ftlb might be enough to alter the  zero  but not to sure!

do a chrono at home bn and one when your out in the elements.

 

the 100 I bought a few months ago had that much grease in it fist thing I did was strip it cos it was doing 10.5 instantly went up to mid 11's

 

 

Nice one si? so pcps are not immune to it?

[walshie 2,804]

I expect being on an airgun the scope was shocked at going out in anything other than 70 degrees and sunshine. 

I was joking so don't start! 

[mattwhite 1,992]

2 minutes ago, walshie said:

I expect being on an airgun the scope was shocked at going out in anything other than 70 degrees and sunshine. 

I was joking so don't start! 

??

[big napper 3,559]

Yes si its my hw100, 

Its not the gun its defo the scope, when i take my first few shots its off zero from what it was the day before so i zero it in and its ok all day then the next day il have to zero again and thats happend a few times now every day i take it out it has to be rezerod, it hasnt been dropped or banged thats why i dont know whats wrong

[big napper 3,559]

And its the same scope thats been on the gun all the time with never a problem before

[si brown 8,486]

if its the Hawke on your avatar send it back, sure they've got a lifetime guarantee 

[just-A-snap 1,269]

Think you would need Russian Winter Temperatures to affect the Aluminium Tube on your scope, so to my mind ether it has had a nock or wear and tear.  

All the very best

[mark williams 7,549]

Losing zero on a pcp ?

Mounts,

Scopes fecked.

Fluctuating air pressure.

" at a guess" ?

                   Good luck mate.