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Spike · January 14th, 2015, 19:48

Change the hop up bucking, 90% of the time double feeds are caused by a worn out bucking. Also inspect the barrel for damage. The madbull python tightbores are coated, and if they get scratched then they're useless.

With perfect air seal a 120 spring will net you between 420-440fps so yes, it's definitely way too low.

*edit* Also, worn and damaged buckings will caused air loss between the hop up assembly and the nozzle, resulting in crazy FPS drops.

January 14th, 2015, 19:48	#2
Spike Privateer Airsoft Trader rating Join Date: Dec 2008 Location: Beaverbank, NS	Change the hop up bucking, 90% of the time double feeds are caused by a worn out bucking. Also inspect the barrel for damage. The madbull python tightbores are coated, and if they get scratched then they're useless. With perfect air seal a 120 spring will net you between 420-440fps so yes, it's definitely way too low. edit Also, worn and damaged buckings will caused air loss between the hop up assembly and the nozzle, resulting in crazy FPS drops. __________________ I change primaries like other people change socks. Last edited by Spike; January 15th, 2015 at 09:04..