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Sounds like you found the optimum trade off between headspace reduction...

July 14 2017 at 9:38 PM

Steve in NC  (Login pneuguy)
AR&P


Response to That's a pretty remarkable gain -

...(which gets better the thicker the stuffing shim) vs transfer port throttling (which gets worse the thicker the shim).

With a 0.025" shim, the spacing between piston and endplug is ~0.01", giving a curtain area around the ~2mm port that's only about half the area of the port itself. That's a pretty severe restriction of what's already a painfully small port, that will "go sonic" at an MV of only ~120fps!

So -- well done, yourself! happy.gif
Steve


    
This message has been edited by pneuguy on Jul 14, 2017 9:41 PM


 
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