BB does not even rank among the top 5 9mm loads most used by law enforcement. There must be good reason for it.
Sure, there is a good reason for it, Buffalo Bore ammo is EXPENSIVE!!!!
Don't make the mistake of thinking that the police (or the military) use the "best" ammo there is. They don't. They use what is supplied, which is ammo that (hopefully) meets the specs decided on by ADMINISTRATORS, and of those loads to do meet the arbitrary specs, they buy what is cheapest.
Not because they don't care about officers lives and safety, but because that is the way our system works, and they don't really have much choice.
The 9mm JHP that famously "failed" in the 86 Miami shootout met every spec the FBI had. After a "blame game" process (which blamed everything but the shooting ability of the agents involved) the FBI changed their specs.
ALL revolvers "pull" bullets. It is the nature of the beast, because cases are held at the rear (rim or clip), and they recoil "away" from the bullet due to inertia.
This is not a problem in many calibers and guns. In some, it is. The heavier the bullet, the lighter the gun, and the stronger the recoil, the greater the pull effect.
I would expect any 9mm round made the normal way to have enough neck tension and crimp to be ok shooting in any normal weight revolver. You MIGHT see an issue in the very lightest guns with the heaviest bullets, but you shouldn't, and you probably won't.
The gun used matters! As an experiment, I fired uncrimped, standard velocity (850fps) 158gr .38 Special out of an N frame S&W, and a K frame S&W. No bullet movement from the N frame, slight movement in the K frame. Same ammo, but the weight of the gun changed the amount of "pull" that recoil had on the bullet. (and this is why we crimp, so that rounds will work properly in everything we shoot them out of.)
If you aren't getting "creep" or "crimp jump" with the ammo you are shooting and the gun you are using, don't worry about it.
If you are getting, then there are steps to take, IF it is enough to be worrisome.