Love my 99s, far exceeded my expectations even before I put a wonky donkey spring, top hat and guide in it - groups like someone else is shooting it and knocked over every rat that’s crossed our path so far
bought a second hand 99s in first class condition in177 got it home put it through crono it was doing 930 fps with webley accupell so took it to bits asap got a tinbum kit polished the piston and deburred cleaned and relubed very spairingley cut 2 coils of the spring asper y tube vid by veminhunters now doing 780 with same pellets and very accurate same hole at 20 yds if I do my bit and not as harsh to shoot and less twangy very impressed with it might screw cut it to fit a hw silencer will shoot a few hundred pellets through to see how it settles down and re crono it looking forward to a good ratting session