Nothing spectacular and I like it anyways and it spits spent shells straight at your feet like an Ithaca but heavier but very accurate. I sure don't use heavy loads much-the recoil is brutal academically speaking..
I had a composite stock (Stalker) in 10 ga. It shot well on ducks and geese using steel. I liked the safety on top of the receiver better than a cross bolt safety in the trigger guard like an 870. The bottom ejection and feed worked fine but if the gun was empty and a bird was coming or needed finishing it was slower to load than just dropping a shell in the ejection port as you would with an 870. The BPS is easy enough to field strip once you figure out how to reinstall the trigger group, you have to really pay attention to the position of the half moon pin on each side of the trigger group. They tend to rotate out of position on disassembly. The BPS is a solid well built gun.
There were no 870s available where I was shopping but you are right on the money NHCrowshooter. You clay and skeet shooters are generally experts on this so I enjoy getting any information like this. Slower to reload is one of my issues with this gun but over all not a bad one. Se another reason I grabbed one was because the empty hulls were bouncing off my partner with my 11-87 so....