Do you use the same recoil spring for the .38 Super as you do with 9mm?
I can conceivably do the same thing with a Colt Delta Elite (10mm) with the addition of .40S&W as well as .357 Sig, but I'm certain I'd need a different set of recoil springs for each round as well as barrels (possibly the same spring for the .357 Sig and the .40 S&W).
So far I haven’t had to. Given the advances in ammo technology, there is a very small difference between 9mm +P ammo and .38 Super. In some cases from Cor-Bon they’re almost dead even. The place where the Super shines is when it gets loaded a bit hotter, then it is in the .357 Mag 125 grain load, or the .357 Sig. It is a bit of an anachronism though.
The 10mm in it’s original incarnation is one bag mamma-jamma.