Tex,
Oopps, fat finger typo, my 351 SL load is running '1841 fps,' action still functions fine at those speeds, haven't had any function issues to date with my rifle, but, on your bit about yours being gummed a bit, did drip a bit of Kroil down/around the firing pin hole in the bolt and propped it up at straight 12 o'clock for a couple days to soak, wiped her out and re oiled with a bit of Lucas Gun Oil, and she's off to the races and ready to rip.
Did notice a hairline crack on the left upper portion of the forearm, figuring there's a sliding counterweight of sorts in there kinda beating things about, if it begins to bother me I'll have 'Smith repair the crack and relieve the wood if available to do so.