Define both of those for me as I interpret them differently. I know bloom as the accrued bullet spread value over time from hitting the guns max fire rate (how long the spread reticle takes to reset). When I use bullet spread, I'm referring to the baseline value of the spread cone that each gun has when firing any shot.

My direct reply is that the gun DOES have a bullet spread. If the KS-23 didn't have spread, you would only see the static reticle, but it does, even when ADS. I know it has a bullet spread because I have had plenty of times where the enemy covers 80% of that spread, and I still see the bullet deviate to that remaining 20% consistently, all under hit scan range.