Hatsan mod 125 vortex gas ram advance compression abaut 12mm. I think i can lenghtening stroke 120mm to 125mm, then vortex compressed only 7mm. More power or slowly?
Then swedt volume is biggest, but gas ram advance comp. 5mm less. does gas rsm pressure rise before the goes in?
Then swedt volume is biggest, but gas ram advance comp. 5mm less. does gas rsm pressure rise before the goes in?
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