Handguns are drastically easier to carry than rifles.
Hollow point handgun rounds drastically reduce the danger of over-penetration present with rifle rounds for likely police scenarios.
Most plausible scenarios where an officer would be forced to discharge a weapon wouldn't really benefit from a larger, more cumbersome weapon. Police usually have to shoot in close-range engagements that end in a few short seconds.
Cost is not really a factor. Look at the cost of weapons used by police departments. Handguns aren't drastically cheaper than decent rifles.
Hollow point handgun rounds drastically reduce the danger of over-penetration present with rifle rounds for likely police scenarios.
Most plausible scenarios where an officer would be forced to discharge a weapon wouldn't really benefit from a larger, more cumbersome weapon. Police usually have to shoot in close-range engagements that end in a few short seconds.
Cost is not really a factor. Look at the cost of weapons used by police departments. Handguns aren't drastically cheaper than decent rifles.