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Old December 2nd, 2009, 08:38   #5
MeatStick's Avatar
Join Date: Jun 2008
Location: Moose Jaw, Sk.
Using an online airsoft calculator it says that 360 fps with .2 bbs is 1.2 joules of energy.

At 1.2 joules a .28 bb should travel at 304 fps.

These figures are from the ASG calc V2.7

Hope this helps
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