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Old June 22nd, 2016, 17:57   #16
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Join Date: Dec 2014
Same here, freshblake. About 1/2 to 3/4 of an inch of compression. Since I R-hopped the barrel and started using a CNC machined hop up chamber, I need less spring than ever to get to my target fps as well as keeping a nice tight consistency. Pretty much the only variable now is the ammo...
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