I highly doubt any deer hunting round would pass the paragraph I quoted thanks to the Thompson Contender. Given that Kennedy's introductory speech specifically named the .30-30 I suspect 17(C) was simply meant to disarm the uninitiated or as an out for those that received political fire at a later date.
You need to look at the code as it is written, in its entirety, in context.
As written, 30-30 hunting ammo could not be outlawed.
Now, would that stop an AG from trying to ban them anyway? That is a different issue.
The point I made, is the law as written and proposed, specifically exempts ammo used for sporting purposes, whether it penetrates vests or not (and of course it does) and whether it can be fired from an existing handgun.
Therefore we would not be correct in claiming the Kennedy amendment would have banned the use of 30-30 calilber Winchester rifles. That is simply not true. More accurately, the amendment was an end-around attempt at enacting an "ASW" ban.