Well, I won't (don't) have to worry about mainsprings breaking, since I have (2) Hopkins & Allen underhammer actions, on which the spring forms the trigger guard (BEEFY!)
Even though some have advised against the 10ga, that is what I ordered. Right or wrong, I will find out as time goes by. I went this way, looking for good strong patterns when full loads are needed, and hope to load down to 12ga equivalent for lighter game. I'll post how this goes when I get some patterning work done.
Dixie gun works can custom make a round ball mold up to .830". This is pretty inexpensive, about $30 for one of my other guns.
I ordered an Ed Rayl barrel, 32", 1st 12 1/2 " octagon to 2 wedding bands, to tapered round, with a bead sight. No fore end on this gun, you use your walking stick for a loading rod, or
you can also use your loading rod as your walking stick!
It should be nice looking after I get it browned when it comes in..in September...though I may have to learn a lesson and decide on a 16ga later......