Tuning FX impact m3 .25 cal 600 mm barrel 25 gr. Pellet tune

150 First reg

100 second reg

16 Macro power

set micro about 4. Then back off micro till your shooting about 890-895.
then start to close the valve adjuster till the gun will start to sound smooth and in tune. You should be about line 4.
You should be shooting about 890.
then tinker with small adjustments on the micro wheel. 2 to 3 clinks only for accuracy. You should be close with this.