I must apologize to everyone for printing some bad info. I have a ghost 177 hp and have been telling everyone that the hammer wheel does nothing if the gun was set for less than 20 fpe and this is incorrect. I was keeping pressure low at 85 bar and there it would do nothing with the light hammer spring today i pushed the pressure to 135 bar and am getting a good range of fps and shooting 13 jsb to 810 hammer wheel 4. It’s also pushing 16 gr slugs to 824 for 22 fpe, 13 gr slugs to 912 also for 24 fpe. And I’m assuming if you then go to the heavy spring you could get to the 30’s but have not tried yet. Again my apologies for providing bad info