right here goes. bought a new hw 100, last may. started using h&n ftt pellets, and they where bang on. one hole groups to 40 yrds. then the gun started playing up. power was up and down by up to a ft and a half between shots, and groups opened right up. sent it back to hull to get looked at, and was fitted with a new firing valve. and had a service. it came back with a test certificate, the power problem was sorted out, but the rifle didn't seem to like the pellets anymore. I've been through loads of brands trying to find 1 that performed as well as ftts. but Im now really struggling. I