Tinker,

Thanks for mentioning the twist, I had not thought about it, it appears to be around 1 in 60" (7 groove) My snider is 3 groove 1 in 78" (also proofed 25 bore)
Extractors are unusual, I have not seen others

srose,

Yes please if you can post them here I would very much like to see them
What load of 4198 do you use? I like this powder and use it on other calibres

AkMike,

Thanks for the info, I use/post that forum, but like the commercial/sporting guns/rifles/pistols here

TH44