.54 TC Hawken bullet diameter?

[JimCunn]

For a 32" Green Mountain 15/16" replacement barrel

 

[Des52]

Do you know the twist rate, your barrel probably made for shooting a patched .530 ball.

 

[JimCunn]

Don't remember offhand.
Bought it 5 years ago and don't have invoice handy.
I'm interested in both ball and conical diameter.

 

[JimCunn]

Just measured the land and groove diameter
Land 0.531
Groove 0.550
Caveat - I don't entirely trust the digital caliper

 

[Ruff Hunter]

The GM 32" barrels should have a 1:70 twist. The GM 29" LRH barrels should be 1:32. From experience with my 32" GM barrels, you should able to load a .535 ball /w .018" thick patch. Have you shot a conical out of it and if so what kind?