You could use 'heavy metal' like they use for balancing crankshafts.

"Mallory metal is primarily a tungsten (W) alloy with a little copper (Cu) and nickel (Ni). Tungsten by itself is a very difficult, if not impossilble, to machine. Thus the reason for creating an alloy ("Mallory"). A very dense alloy; much more so than lead. The high cost is due to the tungsten content.

http://www.mallory.com/data/html/1300500.htm"


The other choice would be depleted uranium but you'd have issues with your gun glowing at night.

Why use DEPLETED Uranium? Why not undepleted? Then you could find your way out into the duck blind before daylight by the glow of the stock?
You might want to use SPF 100,000 lotion to counter any ill effects.....

I believe I read somewhere that Winchester put lead in the butt stocks of M12 Heavy Ducks to kill the muzzle heaviness. I have one but I've never looked. Maybe it's iron. At any rate the gun is still a little muzzle heavy which is OK.

Jeff - I heard the same thing. (But I never checked mine either...)

Yup, there is lead in the stock of a Model 12 3" gun. The barrel is also heavier than a standard Model 12 barrel. The heavier barrel was not about safety. Winchester would bore a standard Model 12 for 3" shells without a question.

I bet the lead in the butts of thise heavy 12s cause a few problems on some guns given the wet conditions that some of them saw.

I wouldn't be surprised if Model 12 Heavy Ducks are not eventually outlawed in California for containing lead.

Years ago I bought a M12 Duck Gun with a solid rib.
It had a round lead chunk fast in the stock somehow, but there was no sign of glue showing under the recoil pad.
That gun liked to beat me to death, it kicked me hard even with trap loads.
Must have been a terrible fit for me.
Needless to say I got rid of it.
I was about 19 or so when I had that one.