The reason I asked my initial question was wondering if I'd ever have a chance to find a 99 in .375 Win with a 20" barrel.
I have a .375 with 22" barrel already. I knew there were two .358's in the safe, but I had forgot that one indeed did have a shorter barrel. Here's the two 358's, the shorter having the schnabel type of forearm. I think I remember the WWII vet telling me that, "this was a rare one", not sure if he was meaning the 358 in 99 overall, or this configuration of shorter barrel in 358.... Sure is a cute handling gun!
The 20" barrel stamping, C650xxx:
22" barrel stamp, D178xxx: