The Westley came today!
Overall, it is a very nice rifle and is indeed chambered in the No.2 Musket round.
The bore condition is not great. Maybe I am just lucky that my other BPE rifles have such nice bores.
The bore measures out at .458"
I think I have read somewhere that BPE rifles with iffy bores will shoot reasonably well with a NfB load and bullets sized to groove + .001" or whatever the chamber will allow. That might be the route I will have to take with this one although I am not conceding that it will not shoot as is. Will know in a couple weeks if I can get out to the range.