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I had a PDI 150% and it was hitting +460fps
If your not careful, that will crack your mechbox in no time.
The fact is, right now PDI 150% springs range from 350 to 470fps...what good is that?
Prometheus springs are good. But their MS120SP should put you over 400fps. As stalker said, 415 - 430fps area.
The MS110SP should land you in the 380-390 zone. Allows you to use parts like bearing pring guides and tightbores without putting you over 400fps.
Dont hold me to those numbers, talk to Illusion, tell him the gun you have and what FPS you want and he can get you there.
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