A 140 spring should deff bring the fps over 370 fps. With that spring 450 is about normal. I think you need someone to take a look at that. Are you certain that your spring guide it locked into the gun and not partially out.
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Originally Posted by Pinard
eeyore, the more I look at your avatar, the more I find it looks like a vagina...
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http://i.imgur.com/wBfBB.gif
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