Kel-Tec PF9 and 20% reduction recoil springs

I bought the MCarbo 20% recoil reduction springs. I haven’t had a chance to install and shoot yet. I love my PF-9 but dam it’s just not pleasant to shoot. I switched to 147gr standard preasure JHP for carry and zero issues.

Has anyone used this spring set and does it make any noticable difference?