Hand-ream if you must. keep a few pristine bores for distance but your close-quarter devices should be able to digest multiple fodder.
“...your close-quarter devices...”
And whether at some distance or at close quarters, our ‘devices’ will out perform theres, ‘cause we know how to use ‘em.
And there is more...when this kind of push comes to shove, the elite military, and civilian Sheriff’s and their deputies will be mostly on our side.
I haven't tried the NATO stuff in the T/C Encore barrel. It might work fine there. All my toys are out of reach. I'm working in San Diego with a rented room until my contract completes. Not using any of my ammo.