Huben Latest GK1 wunderpistol wonderment
- By Ultralight
- Air Pistols
- 26 Replies
Thank you. You are gener
Thank for being so generous with your knowledge and time. Deeply grateful.Sure, UL.
After much tuning both when I had only 250 BAR charging capabilities, and after I (now) have 350 BAR capabilities, I located the sweet-spot charge pressures to return at least a full 19-shot magazine within acceptable extreme velocity spreads (30 FPS or less). Of course the velocity and power of those (at least) 19 shot power-bands increased proportional to the charge pressure.
Here are the results achieved at 315 BAR charge pressure with my two preferred pellets, thankfully equally accurate in my .22 GK. Of course the 18.1s are flatter-shooting, but notice the substantial 10% muzzle energy advantage of the 22.07s-
18.1 grain FX, tuned for 310 BAR fill, 23 shot powerband- Low= 912, Hi= 942, ES= 30, SD= 10, Average= 930 FPS/34.8 FPE
22.07 grain JTS, 315 BAR fill, 21 shot powerband- 870/894/24/6.3/882/38.1
I mostly shoot the 22.07s almost exclusively, in case I get the opportunity at a coyote on my 30 acre home-place.
By the way, I'm trying to reduce my keyboarding time; and am also a big believer in/advocate of the most antiquated and efficient form of communication known to Man. Feel free to call me if you need more information.
Regards,
Ron
254-253-1239
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