if you want to tune your gun properly please read the following.
That depends very much on the gun.
The only way to set it perfectly is to keep upping the dwell over the chrono. Stop upping the dwell when the velocity peaks, and then bring it back down a couple of points.
That should give maximum velocity for minimum dwell. Obviously every time you alter the LPR you should do this again to get it absolutely spot on. Also, if you find you get a massive gain in velocity when you start upping the dwell (ie it sends the velocity 320-330 +) then bring the in-line pressure down, leave the LPR and double check the dwell by dropping itand raising it back to the peak velocity.
Basically it isa very delicat interplay between in-line pressure (because that is what stops the valve from opening AND what fires theball out) LPR pressure, valve dwell and hammer/bolt/pin mass.
Jack"
From these two posts by jack wood i got these steps
1. Set lpr to the point you want, i hear 2 turns in from flush works like a dream
2. Keep raising the dwell over the chrono until it peaks, but if it begins to go above 320-330 then lower your inline a little, and then lower the dwell a bit and continue to raise it until it peaks. Then you are good. I have also noticed that if you just raise your dwell until the gun seems most consistent it works just as well, but keep in mind you will want some high quality paint to get accurate readings.
That depends very much on the gun.
The only way to set it perfectly is to keep upping the dwell over the chrono. Stop upping the dwell when the velocity peaks, and then bring it back down a couple of points.
That should give maximum velocity for minimum dwell. Obviously every time you alter the LPR you should do this again to get it absolutely spot on. Also, if you find you get a massive gain in velocity when you start upping the dwell (ie it sends the velocity 320-330 +) then bring the in-line pressure down, leave the LPR and double check the dwell by dropping itand raising it back to the peak velocity.
Basically it isa very delicat interplay between in-line pressure (because that is what stops the valve from opening AND what fires theball out) LPR pressure, valve dwell and hammer/bolt/pin mass.
Jack"
From these two posts by jack wood i got these steps
1. Set lpr to the point you want, i hear 2 turns in from flush works like a dream
2. Keep raising the dwell over the chrono until it peaks, but if it begins to go above 320-330 then lower your inline a little, and then lower the dwell a bit and continue to raise it until it peaks. Then you are good. I have also noticed that if you just raise your dwell until the gun seems most consistent it works just as well, but keep in mind you will want some high quality paint to get accurate readings.