Just to clarify, yes, my 'smith turned the original shank down to small-ring Mauser size, .980. He then threaded and soldered on a bushing and turned it down to my shank size and threaded it for my action, which is the large shank, or 1.120". He told me that he probably wouldn't have done it on the smaller Savage shank size, at least not with a .308 or bigger cartridge. I wouldn't have bothered with it, but the barrel was brand new (never even mounted to the Winny action), so I thought that for the cost of the machining to a brand new barrel I might just be ahead. If my gunsmith told me it wouldn't be safe (and he has set me straight on several crackpot ideas in the past), then I would have gone in another direction. I did not intend to put forward any possibly hazardous ideas; just something that has worked safely for me in the past. As always, be safe and do your research before committing to any course of fire.
Erik.