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Just ran it through a few chrono tests .. Here are the results
Before clipping the spring 2-3 coils : 480-490 FPS Using .20's
After clipping spring:
- 485ish FPS/2.2 joules using .20
- 415ish FPS/1.5 joules using .30
Note: i have done a bunch of upgrades including new piston and 509mm tight bore inner barrel with Prommy Purple bucking. (Plus the PDI hop unit)
Seems to me if I clip the spring anymore I won't have the Joules to bother with higher weight BB's??
What is an optimal Joul range while keeping it under 450fps with a .20 BB?
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