what is your full battery specification?
Why are you using a 120 spring? do you like getting 250 fps?
I'm thinking it's possible you need more battery amp output, but a 120 spring should be easy enough to pull.
What method did you use to shim?
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I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.
Last edited by lurkingknight; October 1st, 2014 at 14:01..
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