Charles,
Are you anywhere near Champ de tir de L'Estrie? They are holding informal centerfire and rimfire score matches. BR contact is Michel Ouellet ouelmic@vedeotron.ca
Club is located in Saint-Francois-Xavier ,near Sherbrooke Quebec. You may wish to get in contact with Michel, to get some local contacts in BR.
Back to your original question. The 22PPC is the original PPC which has since been modified into many different specifications. Most importantly you need to find out what the neck diameter of the current barrel is. It may be stamped on the barrel. Did the rifle come with any brass or loaded rounds, or loading dies? It most likely has a tight neck chamber and you will need to neck turn the brass to get it to fit.
Tell us a bit more about the rifle and what your plans are, and we can point you in the right direction.
Rick