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  1. J

    Huben Huben GK1 (Full Review) Semi-Auto PCP Pistol

    Hence term “sweet spot” I take it?
  2. J

    Huben Huben GK1 (Full Review) Semi-Auto PCP Pistol

    Now that you’ve brought up the regulator topic, here is another newbie question: Is it the regulator that allows you to tune an airgun so that its reservoir valve releases a fairly consistent amount of air to launch a given pellet at a fairly consistent shot-to-shot FPS? Or is this the job of...
  3. J

    Huben Charging GK1 with Hand Pump

    As a newly-minted retiree, I plan to do a lot more shooting, and am especially excited about transitioning from firearms to HPA guns. I get my cardio in with brisk walks and stair-taking, both of which I enjoy. But since I’m lazy about upper body exercise, I’m thinking that air pumping sessions...
  4. J

    Huben Charging GK1 with Hand Pump

    Hahahaha… Are the multiple pumps a strategy for not over-stressing a single pump?
  5. J

    Huben Charging GK1 with Hand Pump

    Forgive me if the following newbie questions have already been asked and answered: Approximately how many pumps from a quality hand pump will it take to bring the GK1’s 85cc cylinder from 0 to 4500 psi? And about how many pumps to top it off from about 2000 psi to 4500? Thanks folks!
  6. J

    Huben Huben GK1 (Full Review) Semi-Auto PCP Pistol

    Forgive me if the following newbie questions have already been asked and answered: Approximately how many pumps from a quality hand pump will it take to bring the GK1’s 85cc cylinder from 0 to 4500 psi? And about how many pumps to top off from about 2000 psi to 4500? Thanks folks!