Just realised my mistake in the post after reading your replies my appologies i meant to say a max of 260-270 fps.
Re bolter :- i cleaner and re lubed the bolt following your video guide and only used a small amount so i dont think thats the problem. Maybe im just being optomistic but i thought i should be able to get to the 300fps limit and wind back a little. On saturday the site guns were firing further than me!.
Spoke to lips today and thier gun tech is on holiday for 2 weeks. Gave Mayhems gun shop a call and they are gonna have a look at it
Tomorrow afternoon, im on nights so can pop over when its quiet.