There is no break-in procedure with the P226. Clean it, lube it (with grease, not oil) and shoot it.
By the way, what you've been told about rifle break-in is a bunch of voodoo nonsense. There is absolutely no benefit to the procedure described by the "old guy".
Break in were great on older metals of the day, not so much in modern times.
I have a P226 in 40S&W that I lost round count on some time ago. I've shot enough through it I'm on my third recoil spring for it. If it is 9mm (assuming by the 115-124-147 bullet ranges) I would simply find a nice 124gr that has the best groupings and cycles the best (no failures to feed, cycle or eject and doesn't feel like it's pounding the gun). I'd advise on a round but I reload whatever 40 cal 164Gr FMJ is cheaest.
Then buy lots of that ammo. Practice, practice, practice.


















































