I usually used cheapo scopes as I could rarely afford both a good air gun and a Wish List scope at the same time,
AGS varied a lot in cold weather, lower end BSA did not?
Kept the gun, changed the scope scenario, switched HW77K and BSA Lightning XL to Walther Scopes,
Variations ceased to be more than one or two clicks, 35 metres
Nephews coveted Guns,
Caved in for little money, (Relly's Rool) Bum!
Bought HW 95, dumped moderator onto BSA Ultra, loaded UK Neil Air Splitter (2 part) mounted an Optik 3x9x50 AO IR little temp variation, Webley Venom Lazadomes, (Deadly) 35 metres.
Have .177in FX Typhoon Tactical, Optic 3x32 all the bells and whistles, Little temp variation,
JSB Exact 4.52mm, cloverleaf at 35 Metres.
BSA Ultra, Terrific buy from Air Arms Dave, Hawke Eclipse Scope, Temp adjustments 1 to 5 clicks, JSB Exact 4.52, 5mm hole at 35 Metres.
Brocock Aim X Contour, A Light Fantastic Gun (Ooops!) Hawke Eclipse Scope, Temp adjustments 1 to 5 clicks, JSB Exact 4.52 same hole shooter, 35 metres Amazing.