I used them in my HW97k and must say thay are as accurate as JSB's. Only switxhed to JSB's as thay are slightly lighter, giving me more fps and flatter trajectory.
The FTT hit about 1" lower and to the right compared to the JSB's but accuracy wise both excellent pellets.
1 advantage the FTT pellet has over the JSB is that it's a hard lead pellet so will not deform so easily as the JSB's do. 1 disadvantge of the FTT pellet is that it's more expensive than JSB's over here in Malta.
HW97 V-Glided with LP Eliminator Stock Big Nikko 10-50x60
TX200HC V-Mached with LP Eliminator Stock Tasco Custom Shop 8-40x56
CZ S200 FT Stock Big BSA 10-50x60
AA Shamal Big BSA 10-50x60
Steyr LG110HP HFT Modded EB Sniper