Pab1,
You have the opportunity to introduce a young person to the shooting sports and hopeful it will be a life long thing for your son. The Pardner is a great gun to start with. I would just like to caution you on the recoil and muzzle blast of these little wonders. IMHO I would start by invest a little extra cash and buy a box of recoil management/low recoil/reduced recoil loads for the new beginner. I did a research for 20 gauge and it looks like Winchester makes a shell called the Winlite Low recoil loads. Just a little advice about noise or muzzle blast and that is the shorter the barrel the more muzzle blast and noise. So I ask that your son has hearing protection while shooting or around shooting. Good pair of safety glasses is a great Ideal too. If you can’t find recoil reduced load, don’t forget that you can take the two recoil pad screws out and add weight to the rear of the butt stock. This will add weight to the gun, which will reduce the recoil. I’m 46 and my 20 ga TDC (Topper Deluxe Classic) is full of 7.5 shotgun shell shot. Start with number 8 shot size in a 2 ¾” 20 gauge reduced recoil load and all the safety protection stuff and you will have a shooter for life.
Good Luck and Enjoy!
Froghunter
PS: No pressure issues, just recoil and muzzle blast!