Originally Posted by NJR 100
My Mk 4 has only moved on extemely cold days, think fro memory it was about -5, a winter league shoot and every one was struggling.
In the recent Shires 100 where Rob I think first experienced the March shifting due to heat, I had no problems with the mk 4 and that I have to say I was impressed with as it was easily the hottest days (30?) shooting i have used it over the last 3+ years.
I have had mk4 scopes and they are probably my all time favourite due to build quality but i did notice shift with them. Still love them though!!!