by Tom Gaylord
Writing as B.B. Pelletier
This report covers:
- Power adjustment
- Striker (hammer) blow
- Transfer port control
- Michael — this is for you
- Finally — how practical is adjusting power?
Today I will try to finish my answer to Michael about power adjusters on precharged pneumatics (PCP), which I have broadened to include air regulators. Please read Parts 1 and 2 to see what has gone before.
Michael, there are several things an owner can do to adjust the power of his PCP. A longer barrel will often increase power, but that’s not immediately within the owner’s grasp. We are talking about adjusting power of a specific gun by means of things that are easy to do, without changing or modifying the rifle.
Striker (hammer) blow
Power can be adjusted easily by controlling the striker blow to the firing valve. A harder blow will force the valve open wider or for a slightly longer time. Either one of those or both of them means that more compressed air can flow out of the reservoir to power the pellet. As long as the pellet is inside the barrel, the more compressed air that gets behind it to push it, the faster it will go.