I'm sure I'm going to come off as arm-chair commando due to my low post count, but... Oh well!
I've always been under the impression that the best caliber to suppress (without losing its effectiveness) is one that derives the bulk of its energy from its mass (.45) as opposed to one that relies on its speed (9mm). I imagine this still pretty much stays true due to the "sonic crack" and whatnot...
But...
If you were to select a pistol for self defense (I know, I know... no supressed pistol is worth a damn for self defense for legal, concealability, and handling reasons...) and a rifle for, say, ~200 yard "interdiction" of the non-varmint variety, what would your choices be if you were interested in balancing the "quiet", "accurate", and "energy delivered to target".
Ammunition doesn't have to be stock: It can be loaded light to bring it back within whatever the speed of sound is for the conditions...
Curiosity (after much reading) has gotten the best of me.
Discuss. :-)
And/or, clear up my misconceptions.
(Planning several AR builds around <evil> features while maintaining usability)