Hi double rj,
I've always fancied a 10 bore...but being a wimp,I'd like an old 2 7/8":)
What weight is the gun throwing the 3oz load ?,that's could hurt on both ends .
I bet you can find some lowish PSI if you look @ all the powder makers sights.
Lead shot right?..Turkeys?
What do you figure the service load psi was supposed to be for that NID mag ?
I have no idea, but am interested. Good luck finding a`good load
Franc