IIRC, and it has been years since I even messed with a Rem 700, the bolt head is also brazed to the bolt body on a Remington 700 and there is a very fine line about 3/4 inch back from the locking lugs close to where the bluing of the bolt head ended, making the bolt a three-piece affair; bolt handle, bolt body and bolt head. Check that out to verify but I believe I am correct. Browning HP pistol barrels are two-piece and brazed together also. I've never heard of either of these joints failing, so I don't see any reason why bolt handles should be inherently more likely to fail. Yet we hear that they do from time to time.

Heym SR20 bolt handles are welded I believe, not brazed or silver soldered. I believe they had some trouble with them, too once upon a time...

I don't see much problem with a separate bolt handle, but prefer the mechanical joint of the Savage over a solder/braze/weld solution.

BTW: I've had two extractor failures over the years. One was on my .45 cal Stemple submachine gun that would slip off the case heads occaisionally, allowing only weak ejection. Empties would pile up in the ejection port. I reformed it and pretty well fixed it before I sold the gun. The other failure was on my tang-safety Ruger 77 in 7x57 {a Mauser wanna-be}. I bought that gun second hand and the extractor lost the case about 1/2 inch after the lugs released almost every time. I ordered a M77MKII extractor and all's well. Maybe that is why the gun was cheap. Good thing, it is one of our favorite rifles.

Which winds its way back to the topic; used guns can be a very good deal, particularly if a guy doesn't mind fixing other people's problems, which I do not mind doing. And .243's seem to be far more common than 7x57's and I suspect would be somewhat cheaper if that is an issue.