"I load my 10MM pretty damn hot so I always go to a heavier recoil spring to slow things down a bit"
Something that works even better is a semi square bottom on the firing pin stop plate. John Moses Browning originally used a smaller radius than most FPS's come with, but the military requested a larger radius so cavalry could rack the slide easier on horseback, or so the story goes.
A 1/32" radius at the bottom towards the rear uses up more energy to cock the hammer during recoil, it's really a free lunch kind of thing as there's no downside, unless you have weak hands and can't rack the slide, in which case you just point the end that goes bang towards something you don't care about and cock the hammer by hand first, after which it's as easy as it's going to be to rack it. You can buy an oversized FPS pretty cheaply, but fitting one requires some skill.
You'll notice the difference, and a heavier recoil spring than is necessary to load and close the slide again will also add a pounding to the gun.
Once you find the spring strong enough to take it back into battery reliably that's really all the spring you need.