First of all, let me say that I've read a few articles which claim that the Army wants hollowpoint ammunition for its new pistol, whatever that ends up being. Actually, the specific wording is "special purpose ammunition", which rather implies that it wants the OPTION to use hollowpoint ammunition, should they judge that it's necessary. This is a whole 'nuther matter than simply saying they want hollowpoint ammunition.
http://www.armytimes.com/story/mili...gun-system-solicitation-hollowpoint/29886907/
There is a lot of hype going on with this discussion, and we've seen the likes of it here and elsewhere...talks of "energy transfer", "over penetration", "less risk to innocent civilians down range", etc.
And let's be clear and honest, here...it IS "hype". None of this stuff is new science and all it's being used for is expanding the ever growing scope of this needlessly expensive debacle they currently call the "Modular Handgun System", as if it's some kind of fancy SciFi weapon. It's not. It's a frickin' pistol, the lowest of the low of the military's firearms.
The military is not a civilian police organization and is not a group of civilian citizens simply looking for personal protection needs or hunting needs. Their needs are a wee bit different due to the nature of the beast when going up against armed and armored enemies deliberately maneuvering in combat.
That said, what the military needs above all else with respect to their pistol and rifle ammunition is penetration and reliability. People can say what they will, but with all other things being equal, non-hollowpoint ammunition has this in spades in comparison with hollowpoints.
Energy transfer doesn't mean squat if your small arms ammo can't poke a hole in the enemy. And a pistol needs all the penetration assistance it can get, what with it being the most underpowered firearm the servicemember carries.
The danger to "innocent civilians downrange" is, and ever has been, due largely to the fact that most rounds fired MISS their target entirely in the first place. And the flip side of "over penetration" is that you can cut down more enemy.
If the Army wants hollowpoint ammunition as an option, more power to them. This allows them the flexibility they need to tailor their troop training and provisioning for specific combat missions, and this is good. But it should not "replace" non-hollowpoint ammunition.