Since you said "etc", I'll tell you about my Crosman .22 cal 1322 pump-up air pistol. It is not a PCP, so it's cost won't break the bank. I have two, one for me to shoot and one for my 7-year old grandson. They are as accurate as need be. Both can bust a coke can 10-15 yards away regularly, and even farther. The shoulder stock on my grandson's pistol was too long, so I used my Dremel tool and epxy to shorten it to half it's original length - now it suits him fine. To give him more chance of hitting the target, I toss a one gallon milk jug out in front of use and we have at it. THe sound of the pellet striking is pleasing.
The manual said no more than 10 pumps, but out of curiosity I went to 12, here's what I got with my chronograph.
I was shooting JSB Match Jumbo Diabolo, 15.89 gr pellets.
5 pumps (done twice) gave me an average of 362 fps,
10 pumps (done twice) gave me an average of 468 fps and
12 pumps (done twice) gave me an average of 489 fps.
Some time has passed since I collected this data, so I don't know how the numbers may have changed.
The more pumps, the louder it gets. I shoot it in my yard all the time and no one has complained.