Originally posted by DocsMachine
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I don't disagree with the heavier hammer part.
Originally posted by DocsMachine
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Originally posted by DocsMachine
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In your case with the Fastback... Well, I worked on a Fastback for JunglePeanut last winter and noticed the upper tube bore was quite a bit larger than normal. I'd guess (obviously speculation) that the FPS increase you saw was due to the better fit of the bolt you made for it, not the design itself.
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