You guys are great . I posed the question about the zero dropping erratically as did the f/s. I think it was Ice who suggested I look at the barrel seal .
Today in good light I looked & saw a wanked seal !
I messed about with a leatherman & found it came out quite easily . I decide to try & reverse it , put a tiny dab of silicone grease onto it & popped it in .
Spent 10 minutes getting the rifle back to zero , fired about 150 pellets all within 25mm circle at 20metres . I actually dressed the seal face with a smear ( very little ! ) of silicone grease , maybe delay the damage . Meantime I've ordered a few more seals .
If this one went at 5000 pellets , I suppose a change at 4000 would stop the irritation of wondering what on earth has gone wrong , suspecting the scope of taking a dive .
The wealth of knowledge shared here is fantastic . Most gunsmiths are not forthcoming with this sort of info & one would probably pay way more than the actual worth of the repair if one went there for help .
Like one prominent gunshop in Durban , who told me that the reason my airgun would'nt zero was because I could'nt shoot . Gavin & Andre fixed the problem in one second , use a quality pellet ! Sadly for that shop I & all of my mates will never again shop there !
This site & FT are in for a good long fun filled life here in SA . :shoot: