Quote:
Originally Posted by Heerven
355FPS, are you sure Kosmos? From 0.20 to 0.25 I loose already 40fps
I never tried 0.30.
I had an app on my phone with a chart according to BB weight, actually who was very close to my numbers for 0.25.
If I remember right, when I used to use 0.28, I was closer to 220-230FPS to not get over the limit FPS allowed with 0.20
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That's for AEGs, that push out a constant amount of air, at a given acceleration rate (a spring is linear, well mostly except the "non-linear" part).
Gaz expansion is not, it takes as much space as it can, regardless of the volume. And there is gaz added as long the the BB puts back pressure on the valve. It's also instantly pushing full pressure, unlike an AEG spring that has to accelerate the piston, then seal the o-ring and then start to build-up pressure.
In summer, I set my gun at 380fps on .20.
I run .28 and I usually am still over 350fps with that.
What should happen is set the rule for energy instead.
You chrony the gun with the weight you will use, and calculate the total energy.
Really useful script here for that purpose:
http://www.gamepod.com/fps_calculator.php