Hey, I am new here. I am trying to max my power for deer control in my yard. I am shooting at 50 yards max. I have my front reg set at 200, rear set at 150, large hammer wheel at 16, micro at about 4.9. Airflow reg is at line 5. I am using a chronograph and every time I shoot the fps goes up. It has never peaked yet...which I find strange and doesn't "match" the results I am seeing on YouTube videos. It went from 747fps to 860fps in about 24 shots. I decided to wait a day or two and try again. Anyone know why this is happening? (.35 cal 81 gr JSBs are being used.) I would like to be consistently shooting around 915-920fps.
FX FX Impact .35 Cal Tuning (Max Power)
- Thread starter chefigo
- Start date
What hammer weight and spring do you have?
Any mods to the rifle?
FX recommends the keep the reg settings at 170Bar max for the AMP Gen 1 series regs. That goes for the front reg as well, and you might find your parts dont last long set at 200Bar. You might be too high on the front and too high on the rear for a stock hammer system. According to the owners manual for normal weight pellets the rear reg suggestion is 130-135Bar in 35Cal. I would try lowering my regs to ~170/140, and start low on the hammer tension to work your way up with fps (dry firing between adjustments). I would also start with my valve stop about 4-4.5 lines and mess with that at the very end. Gonna be an expensive tuning session, RIP your bank account.
Any mods to the rifle?
FX recommends the keep the reg settings at 170Bar max for the AMP Gen 1 series regs. That goes for the front reg as well, and you might find your parts dont last long set at 200Bar. You might be too high on the front and too high on the rear for a stock hammer system. According to the owners manual for normal weight pellets the rear reg suggestion is 130-135Bar in 35Cal. I would try lowering my regs to ~170/140, and start low on the hammer tension to work your way up with fps (dry firing between adjustments). I would also start with my valve stop about 4-4.5 lines and mess with that at the very end. Gonna be an expensive tuning session, RIP your bank account.
Last edited:
I see here in the manual it states the rear reg for the plenum should never go over 170 bar. I have it set at 150 bar. This is a stock gen 2 Impact M3.
Upvote 0