Ok, so I just tried out my friends 9.6V 2700mAh battery with the stock gun and spring. The rof was great. Its about exactly where I want it to be with the upgraded spring. My quesiton is, if it has this rof with the stock spring, the 400fps spring will slow it down quite a bit, correct? Anyone have personal experience using a 9.6V from stock to upgraded spring? Did the rof drop considerably. I feel that if this is the case I may have to go to the 10.8V
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