Amen. I try to keep below 8000psi out of respect of 100+ year old wood stocks. Don't like to see cracks.

I always thought recoil affected stocks and pressure affects barrels.

True. The recoil formula doesn't use pressure as a factor. However, we all know or should know that in general, the higher the pressure, the heavier and faster the load is ejected, which are recoil formula factors. Loaders can vary powders , primers and crimp depth to affect pressure . Chamber pressure and recoil are not fully separate although the formulas are. However, this subject matter is only important for knowledge purposes. For the general Parker shooter, he has a strong gun that can take substantial loads up to and including many of the so called high brass shells of today.....but not including some of these 1350 -1400 fps 1 3/8 oz loads that some manufacturers tell you that you need for killing pheasant.

Guess I'm safe what ever way you want to measure - 3/4oz loads in a 12ga at 1170fps and most around 7000psi. Don't hunt, just shoot clays, so all that heavier shot loads aren't needed. My shoulder and stock are both safe.

Sounds like a nice light load. Shooting a 28 gauge load in a 7 - 7 1/2 pound 12 gauge you should hardly notice the recoil.