After getting a bit spoiled with the lighter recoil spring in my Shadow, I finally broke down and ordered a #14 spring from CGW for my P-01.
WoW what a difference in being easy to manipulate the slide that has always been a bit on the stiff side!
I wish I had done this a long time ago. My old hands don't like that stiff stuff, and my normal practice ammo don't either.
Obviously these springs are not for hot loads, NATO spec or plus P, but should work well with most of your off the shelf practice ammo and even standard pressure defense rounds are not gonna kill the gun.
All just FYI!