Originally Posted by rkenders
It's my opinion that shaving a little off the bolt tail wont make the gun more efficient. Admittedly I haven't done the mod yet myself.
It will lower the guns operating pressure since air flow will be less restricted. However that lower pressure is only going to come if the dump chamber is enlarged. The G3/G4 has a smallish dump chamber which is why it needs the pressures it does. The Techt bolt expands the dump chamber by hollowing out the back cap and as a result gives you a few PSI. Also the Techt bolt moves a lot easier than the stock bolt. I'm sure that helps the need for higher pressures a little too. Truely Van457's mod needs the added dump space and the bolt mod to work well.
It is your opinion and i Fully respect that, but this is based on my own experience last weekend.
Son shot a modded g3 last weekend, he got 1000 shots off of a 3700 psi fill on a 49/4500 tank...
His marker was running at an 11 dwell as well, I could lower the dwell and get a few more shots or have a full fill and get another 100-200 shots possibly... so if he actually had a full fill on a 49/4500 tank, he in reality would have gotten between 1100-1200 shots, on a 68/4500 fill a much greater number...
So in my experience, And my bolts are actually modded, that it has helped out alot in efficiency, Unless you know anyone else that would probably get close to 1200 shots on a 49/4500 tank, I would consider them numbers pretty damn good...especially for a dump valve spoolie..
I believe a Clone VX which is supposed to be one of the more efficient spoolie markers is only getting around 1400 shots on a 68/4500 fill and that is a well broken in VX at that..
And i actually owned a vx as well and can confirm that number as well.
On one test that i know of, on a 1000 psi test running at a dwell of 10 on a modded g3, the shot count was 450 something... the test was done as well on a 11 dwell and 12 dwell and of course the shot count went down, this was on a 1000 psi test...
so if we even multiply that or give and take some, you should be able to achieve at least or around 1600 shots on a full fill of a 68/4500 tank..
These are not my opinions but facts, does not matter if anyone believes it or not, Unless anyone wants to paypal me the cash to buy medium to highend paint, pay for my gas and air...I will be more than happy to shoot paint on video and show it to you...
It does not matter to me if anyone here mods the bolt or not, I own 2 g3 markers and justicexd has his g3 modded as well, I reap the rewards of it and I just wanted to share what his mod actually did to the marker...