Agree that BB makes top notch stuff but their +P is too hot for me in my airweight J's. It creates too much recoil for quick and accurate follow-up shots, but if you can handle it no problem.
It chronographs just about identically with the good, older Remington +P FBI load I've carried for years, but at standard pressure and with reduced flash. Recent tests (some reported here) seem to show that Remington has watered down the +P 158 grain LSWCHP.
The Buffalo Bore bullet has a gas check, also, and is very soft lead.
I got some of the +p FBI loads and they are HOT! I was considering the standard pressure as well, but ballistics videos on YouTube show that they have problems expanding? My theory is that if you get decent placement with the +p, you won't need a follow up shot! FEEL THE POWER!!!