Tow is available here
http://www.turkeyfootllc.com/Trekking.html
see near the bottom of the linked page. Currently out of stock but normally 6-7 dollars for a 4 oz. bag which is a lot.
I also use 90 grains Goex 2F and 100 grains of bismuth shot (#4) modified choke, for turkeys and ducks and it works
I am going to try some #3 and #6 bismuth on game birds this year.
I use a TC New Englander cap lock 12 g.
@Enfield58 that’s not fair, you haven’t seen me in my Last of the Mohicans loin cloth.
As to snobbery, I have a friend that killed a wild turkey with his bare hands and that means you are all a bunch of incompetent, tool-using modernists.
@Prairieofthedog I don't go in for those super full or even full chokes. I use a modified in mine for turkey and ducks, and an Improved cylinder when I sling a .690 ball.
The main problem with choke tighter than modified is I cannot swab the bore with a wet patch or reload without removing...
Bismuth is very close in density to lead, and very soft/brittle so in needs a little tin added to it.
You can use bismuth just like lead in a muzzleloading shotgun, it is safe for the gun and nontoxic.
I hunt ducks and wild turkey with a TC New Englander 12 gauge with screw in chokes.
keep in mind, that bismuth shot is not very round, so patterns are not as good/dense/round as lead or steel. The best, roundest bismuth shot is from rotometals.com, but even that is just ok.
I like #4 bismuth...