HW80

To get rid of twang, you can fit a kit that has guides for the spring.
Tin Bum tuning sell them.
If you take the gun apart and can measure accurately the spring ID and the ID of the piston, it's pretty easy to make up a top hat spring guide for inside the piston. Then using some coke can, or coke bottle make a sleeve for the spring. These take up the gaps around the spring and absorb vibration that causes the twang.

Thanks J-S tried the 16g JSBs but the accuracy wasn't there, the 14g JSBs shot real well. Will put up with the tang, next time I'll go the TBT way.

only spitting the 14g at 750

Edited by flock - 31 Oct 2022 at 3:46pm

It still has around 5fpe @ 128m.
you want me sort out 20 AA field 16gr pellets and send them to you for trial.
save buying a tin

its generaly accepted in UK that it only takes 6fpe from small 177 pellet to cleanly kill rabbits with a head shot,the main advanages of higher velocitys are higher fpe/flatter trajectorys/shorter flight time and capability to use heavier pellets at decent velocitys,the advantage of heavier pellets is tho velocity maybe lower than lighter pellets they hold that velocity for longer and tend to shoot flatter for longer distances than lighter pellets so hold more energy for longer as well and tend not to be as affected by wind as much lighter pellets,in the end it all comes down to the most accurate pellet for the rifle or pistol, learning its trajectory out to the max distance you are most likely to shoot it out to,and then put a lot practice into learning how to shoot it over a range of distances out to that max distance,its really all about learning your rifle and what its capable of,the kill area of a rabbit/hares head is approx 25mm in diameter for a brain kill shot,i use twist caps of my beer bottles for practice hunting targets,because they are easy to see and reacte when hit i place them at radom distances out to100m,when i can no longer consistantly hit these 27mm targets thats the max distance i use that gun for hunting,i find this works better for me than paper targets because i dont need to check targets to know when i hit them and they lot more fun to shoot at than paper eh.