Loaded and test fired 20 115gr. 9mm yesterday. Had one stovepipe so I bumped the charge 0.1gr. and loaded 20 more.
I'm looking for a light but reliable load that doesn't require a lighter recoil spring as I have a number of new shooters that want my help in learning the ropes.
I have two 9mm Luger loads I use, both have very light recoil and work 100%. With 147 grain poly-coated slugs, I use 3.9 grains of WSF, and with 125 grain stuff plated, I'm using 3.9 grains of Tight Group. Working up a 9mm load to use Accurate #2, as that stuff meters so well when I'm loading .45 ACP.
Faster powders with heavier bullets seems to be the magic recipe for a recoil impulse I like, and can shoot quickly with accuracy. Shooting these out of a Sig p320 x-5 Legion, and a Springfield Range Officer, coals are typically around 1.13 to 1.15 and I like to keep the stock springs in. ( using the 14 lb spring in the Sig, which is the heavier of the two it came with. )
Hopefully this gives a good starting point, obviously you'd need to adjust your charge a bit for the lighter bullet, if that's what you have.