I have just joined the forum and there is lots of good information on here, I have been shooting air rifles for some time and am now shooting an Air Arms PCP 410 fac .22, mostly for pest control on farms.
I have been building rifles for a long time mostly centre fire and rimfire, I have only built one spring pellet rifle that shoots quite well but not to the accuracy of the PCP.
It seems I have a lot to learn about the technical side of the PCP air rifles as I have been reading on here. You have a good site here. OM