Sighting in a scope

[Novagun]

I set my scopes up on the rifle using the mirror method. Then i test fire and make adjustments
I sighted in a scope the other day and it was bang on . I went out this morning and shot at a target and the group was low and to the right by 50 mms. The difference is that today was much colder and damp.
I wonder how much the temperature effets the scope and shot  cycle and the shooter who was not warm.

[Tater]

Moved to the Optics Gate.

[Hoosier Daddy]

I set my scopes up on the rifle using the mirror method. Then i test fire and make adjustments
I sighted in a scope the other day and it was bang on . I went out this morning and shot at a target and the group was low and to the right by 50 mms. The difference is that today was much colder and damp.
I wonder how much the temperature effets the scope and shot  cycle and the shooter who was not warm.

What is the gun being used Hugh?
  That may make a difference on how temperature sensitive it is.

[Back_Roads]

 When I shot springers for hunting, I would set the sights for the first cold shot, as the gun warmed up with more shots the POI can change. Typical hunting not many hot shots are taken.

[PasadenaMike]

As mentioned. What’s the gun being used ?

[Yogi]

Springers need to warm up more than scopes do.  However, aluminum does grow and contract with temperature changes.

-Y

[lefteyeshot]

If the gun isn't hitting POA like it did last week I just keep shooting without adjusting anything. 20-30 shots when I get warmed up it'll come back to where I zeroed. Get relaxed my heart beat and breath back down from running around setting up the range, targets etc. My feet right, chin right on the stock, artillery hold right, holding my mouth right. And I got this quint with my eyes seems to help me with my one holin'. It's usually me when the zero changes. If not, re-zero. Doesn't take long.

[KevinJBrown]

Temperature changes a lot of things. People are asking the right questions. Bottom line is that that you should figure out what is changing, and is it something that should be changing (material properties) or not (human, something touching that wasn’t) and either compensate for it or train it out or fix the assembly or clearance.
Also you didn’t say if you were working off a bench or???
If my POA 50mm and my group size didn’t change I’m going to figure either my scope moved or my turret did. Otherwise I would expect my group size to change.

[Novagun]

Somehow I missed all the replies here. Just read them now. Had the same thing happen with a D34 yesterday. I think it could very well be the shooter that is inconsistent . I know things change when shooting with a jersey and coat on in the cold. I was shooting offhand but rested against the door jamb. Will try the D34 again this morning.