Most rifle ammo will penetrate standard police vests. The debate is left over from the old copkiller bullets issue - which was a nonissue or mythological.
It is still believed by idiots who don't know the technicalities.
It has little to do with kids but more with protecting police (not that this is not a bad thing - but a nonissue).
Handgun rounds have different rules than rifle rounds. So is it to ban most centerfire rifle rounds - who knows yet.
The stupidity is summarized by this paraphrased statement by a so-call conservative, the pompous tushy Joe Scarborough of MSNBC.
He 'said' - I don't see why if I take my six year old hunting, I need a 30 round clip full of cop killer bullets.
He's quite the expert