I never liked welding on bolt handles, though I did it when customer wanted a different style. I always liked to forge the bolt handle down in a set of blocks made for that purpose. It is a stronger set up.
You MUST have a heat sink. A solid copper rod (an old ground rod?) the size of the inside of the bolt will do fine, but if you don't have one you take a chance on ruining the heat treatment of the whole bolt and that is not good.
Same is true of brazing on a scope mount. This will probably ruin the heat treatment of the receiver ring. Soldering, which takes a lot less heat, might be workable, but I don't think it is worth it just to save a few dollars in drilling and tapping.
I rarely play chicken little, but when high pressures are involved, saving bucks and losing eyes is not a great tradeoff.
Jim
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