Know i'm swimming against a tide here but I do use it as part of an initial setup, after which i'll verify on a measured range. So far found it to be accurate.
AirArms RN10/EV2 Stock-2007 Big nikko FT Kit
AirArms NJR100 Hawke Airmax SR6 HFT/SFT Kit
Feinwerkbau 600 10 metre
HW77K-zeiler 6-24x44 Work in progress
Webley Vulcan .22 Lovely old relic