Tuning M3 compact.22

[addison]

Shooting 18gr @910 1st reg 170 2nd reg 97
Quick tune 3
power wheel 16
Four line out on vaule adjuster!
Is this a efficiency tune? Or could you guys suggest something better? I was thinking lower speed for higher shot count for sure. This thing sounds hot atm! Let me say its a laser atm!

 

[madeintheuk]

Tune sounds ok. I think the separation in pressure between your 2 regs is a little high though. You may see inconsistencies in velocity due to creep or other issues. Try to aim for a 50-60bar difference between regs. 

 

[cmatera]

Sounds a little high to me too. I have the same gun shooting slugs, mine are set at 1st reg=200 2nd reg=150.

 

[TDK]

I wouldn't worry about the delta between regs right now. That should be fine. If it is loud, though, that suggests it is not efficient. Valve may still be open around the time the projectile leaves the barrel.

How far below max speed are you at that reg pressure? The simplest tune you can do for a regulated PCP is to find the max speed at a given reg pressure and set your speed to 95-97% of that. You may find good accuracy even below 95% and it will be even quieter, however depending on the gun you may see more shot to shot deviation.

 

[addison]

Between 

me and my friend today

 

[igolfat8]

Holy smokes, that’s a passel of tree rats.