View Single Post
Old 10th October 2013, 08:07 AM
rich's Avatar
rich rich is offline
Senior Member
Join Date: Nov 2008
Location: Shebbear, N Devon
Posts: 1,643

If we could draw a plot, a trace, of pressure on one axis and time on the other, then the work done on the pellet is the area under the curve.

My view is that the air pressure behind the pellet is more constant with the PCP, as the valve continues to admit more air into the barrel once the pellet has started to move, and in most cases that air continues to be released into the space behind the pellet right up to launch from the muzzle, and usually even longer.

Also, if the PCP could produce a high surge at the start of the cycle, why would it need three times as much air?

Good discussion.
Reply With Quote