2 Vs 3 frame 12s - rambling questions

[OH Osthaus]

The threads about the 3 frame 12s got me thinking about maybe adding a heavy 12 to the mix some time in the future. Maybe another project gun.

While 3 frame 12's are not common, but I see more 2 frames with 32 inch heavy tubes.

I was looking at the frame measurements in the Parker Story- the difference in size between a number 2 frame and a number 3 seems to be around a 16th an inch depending on which measurement. About the same increase from a 1 to a 2. but as you go up the percentage of increase for 1/16 is less.

I have a 2 frame hammer gun, and comparing it to a 1 frame hammerless, I notice it is just a little bigger, the thicker breach being most obvious.

Most 1 frame 12's I have handled seems to be under 8 pounds, my 12 with light 28" barrels is just over 7 pounds, just a little more than my 1 frame 16.

My 2 frame hammer 10 - with 32 inch barrels stamped 5lbs 2oz - tips the scales at 9 pounds, so I expect a 12 with barrels in that weight range, on the same frame to be similar (although maybe more wall thickness with a smaller chamber?) That seems to be the same range as the 3 frame 12's mentioned in the past, but I doubt the frame size adds more than a few ounce to the guns total weight.

so -- Am I off on my guess about weights? I know that will answer itself when I start looking at individual guns.

so- except for the cool factor-and rarity, any practical difference with a 3 Vs a 2 in the field/marsh with something like non tox loads? A little more meat in the head of the stock for example?

for those that have one, what are the length and the weight stamps on your 32" 2 frame barrels?