But the new proposed rules add new pistol calibers to the mix.
The .327 is not a rifle round, but will only be legal under the new proposal.
So which rules apply to that cartridge? Pistol caliber rules, or the new "high-power" rules?
Once again, the .327 would fall under the new high-power rules.
Doesn't matter whether you or I think it's a fairly mild caliber; the fact remains that it didn't fit into the old handgun caliber rules, i.e. 1.16" minimum case length and minimum bore diameter of .357.
Why do you persist in making something so simple into something so complicated?