I would not spend the money trying to work the bolt over. Just have your smith measure the action for a fitted PTG bolt with extractor in any bolt face you want.
Sell the old bolt on the net.
Final cost out of your pocket will be far less than spent on reworking the bolt and have a more accurate smoother bolt.
that means with a LA, you could build the 338 Norma on it quite easily with a PTG bolt or the 338 Edge.
that also means you can use the 6x284 and build a WSM also.
Same thing, sell the bolt and barrel if low round count for $150-200 and bolt and build on the SA.
Of the two, I love the WSM due to hard hitting and long barrel life but the Edge is a proven round also, Shawn has the reamer and matching on the shelf dies.
advertise the 6-284 on BR central ($3) and www.6mmbr.com
(free) if you want to sell it also.