32 - 380
You might try googling
mouse guns comparison chart
The nice thing on the chart is that, per note #2 at the bottom of the chart, they attempt to list the weight of the weapons with
Apparently some of the advertised weights for pocket guns accurate if you typically carrry a weapon without ammo or even without a magazine inserted.
I would not carry without a magazine full of bullets, but that's just me.
The chart claims a .32 Ket-Tel being within an ounce of a 380 Kel-tec (assuming those bullet things are counted) and size is virtually identical.
BTW: That's some great work putting that chart together.