Years ago, a member of our unit had had some problems with a Jap Bess and had disassembled it, lost some parts and could not fix it. He told me he would donate the gun to our unit for a "Loaner Gun" for newbies, IF I would take on the job of fixing it. To make a long story short, it only needed a couple of parts and I fixed what was wrong. So we presented the gun to the Unit, together. The one thing he did not have was a bayonet for that Bess. So I purchased an India Bayonet for it.
Well, the socket on that bayonet was TOO large in diameter for the Jap Bess and was way too sloppy/loose of a fit. So I began working on silver soldering some brass sheet metal into the socket to tighten things up. Before I got to it, though, someone donated a bayonet that fit.
The reason I mention this is because it is a crap shoot with the India Bayonets on whether or not they are going to fit. So it is best to take one's musket or rifle musket along and actually try the fit before buying, if at all possible.
I do realize you don't have that luxury, though.
Gus