Originally Posted by
bucketboy
Yep, cut the barrel so it’s only 2” long
Bb
That should work 
short answer yes, but that means there will be nothing to cushion the piston's landing, so it'll be rather harsh.
If you look at the graphs of pellet displacement vs piston displacement, it's not quite 2", but it is very much shorter than would be optimum for power transfer (to the pellet).
So it depends on power output needed as well.
Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
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