In my opinion and experience you'll get more from tuning the spring to your exact load first, even just one pound is a huge difference so maybe grab a set and mess with those.
If you've already done that, then modulating the amount of weight on the back end is a good next step. (Grips, magwell, or even brass mag basepads)
On my TSO in .40, which saw maybe 30k rounds as my match gun, I had the DPM systems recoil spring tuned beautifully, plus a LOK brass grip and brass magwell. Man, than return to zero on pairs or more was a thing of beauty.