First off, I would like to say thank you, to Mr. Milek, for tuning the XS B28 A, that I had him send my son. My son is quite a shot with that gun, and I'm very pleased with the way it has performed for him.
I shot my new Discovery, and learned about the air pressure dropping, and subsequently , the groups hitting lower and lower. If you adjust your scope at this point, you will be WAY HIGH after you pump the Discovery back up.

) Ok, smile, laugh, and figure this guy is really new to PCP.
I'm 62, my son is 37, and we had a ball shooting paper targets and water filled soda cans. (Yes we brought the cans home to recycle)
I guarantee, I did not get groups like some folks post on this forum, but both my son & I had a great time together, and after sighting in on the paper targets at 20 yards, we have minute of squirrel head.
I want to thank the guys on the forum who took the time to peak my interest in Crosman Discovery PCP and 2240, CO2 guns. Of course the 2240 has the shoulder stock already, and will get the steel receiver, scope, and longer barrel when I get my delivery from Crosman.
The next step for us, is to try our hand at pest control, and maybe some small game hunting.
Gordon Dempsey & Gordon Dempsey II, in Charlotte, North Carolina.