So i mounted up a cheaper end scope i used for some time without issue the other day and went and shot . Well funny it was like way right . So scratching my head i made the clicks got it pretty on zero . Well ok, put it down went in got a refill and whatever goofing i did went back and shot and now way left. ( about the same as it was right a 1/2 hour ago) .
So moved it back right and shot some but acted like it couldn't hold a zero. Of course i checked all mount and ring caps and i use a #2 pencle to put index marks to show of anything moved ...nothing all marks still lined up no shifting ..
Ok , all things come to a end and it held just fine last time i used it so go in pull the scope out of the rings pull the mount off the gun looked it all over .
Then for some reason i took a rag of cleaner cleaned the scope body/ tube , the mount and re mounted the scope back in the rings set the cap screws mounted it back on the same gun / just went back with it as if a new scope job.
Took it out set up a thin cross at 10m and hit the first 3 pellets just low and left , did the clicks just maybe 12 up and 8 right +/- got it just a tad right off zero .
Set it down for X amount of time re shot pretty much right on , and all day ..
Shot 50y pretty good in 1-1/4" circle shot another 10m back to 50y ect..
Anyway out side of overnite cool 78° to hot 101° temps the poi just shifts maybe 3 clicks maybe.. but groups are as tight as i can hold ..
So just a fresh clean remounting of the scope corrected the cant hold zero springrr thing ..
Go figure.
Sadly i dont have the before shots to compare with the nows..
The first quick click zero just right 2 days ago

Then today
The square bull was took out of cold ac in to 96° and immediately shot .
The thin cross was left out maybe 15+/- minutes in the 96° air

Well no movment.. amazing.. so much for being quick to chunk it on the junk pile.
So moved it back right and shot some but acted like it couldn't hold a zero. Of course i checked all mount and ring caps and i use a #2 pencle to put index marks to show of anything moved ...nothing all marks still lined up no shifting ..
Ok , all things come to a end and it held just fine last time i used it so go in pull the scope out of the rings pull the mount off the gun looked it all over .
Then for some reason i took a rag of cleaner cleaned the scope body/ tube , the mount and re mounted the scope back in the rings set the cap screws mounted it back on the same gun / just went back with it as if a new scope job.
Took it out set up a thin cross at 10m and hit the first 3 pellets just low and left , did the clicks just maybe 12 up and 8 right +/- got it just a tad right off zero .
Set it down for X amount of time re shot pretty much right on , and all day ..
Shot 50y pretty good in 1-1/4" circle shot another 10m back to 50y ect..
Anyway out side of overnite cool 78° to hot 101° temps the poi just shifts maybe 3 clicks maybe.. but groups are as tight as i can hold ..
So just a fresh clean remounting of the scope corrected the cant hold zero springrr thing ..
Go figure.
Sadly i dont have the before shots to compare with the nows..
The first quick click zero just right 2 days ago

Then today
The square bull was took out of cold ac in to 96° and immediately shot .
The thin cross was left out maybe 15+/- minutes in the 96° air

Well no movment.. amazing.. so much for being quick to chunk it on the junk pile.