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Old February 7th, 2010, 16:26   #15
Amos
 
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Join Date: Aug 2006
Location: Tokushima, Japan
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Quote:
Originally Posted by The Acer View Post
Hey, just so everyone knows incase you dont, a gas gun will have more energy efficiency with a heavier bb. My short answer to the question, with a 550fps with .2g bb, when you put a .43gram bb, my guess would be, it would shoot between 425-450fps, having a higher energy than if you were to shoot .2gram bb.


A couple weeks ago I did testing in my basement, Here are my results

Gun: KJ M700 takedown
Airs supply: Custom Made CO2 rig, with adjustable pressure
Chrony: Styrak's Madbull Chrony.

Results
At 90Psi (about what propane will shootout sometimes)
.2g bb at 505fps
.28g bb at 470fps

At 100Psi
.2g bb at 550fps
.28g bb at 505fps
Welcome to 2 years ago.

Heavier BB stays in barrel longer and builds up pressure.
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