I have a house fire burnt Winchester 70. I am going to send the receiver and stripped bolt to Blanchard's. I will rebuild the firing mechanisim with all unburnt parts - firing pin, safety, springs, pins etc, as well as trigger and sear.

Does the bolt sleeve (bolt shroud) need to be heat treated? If so does anyone know the steel composition and original hardness of the breech bolt sleeve for a pre 64 Win 70?

I am thinking that it probably is OK without heat treating as many if not most Remington 700's have an aluminum bolt shroud.

Also what about mauser 98 bolt shrouds? Are they heat treated (hardened etc) originally or after installing side swing safeties?

What are people's opinions/expertise on this subject of bolt sleeves?

This self annealing practice of Win 70's is getting out of hand. People bitch about silly things like Remington 700 bolt handles falling off, or, Remington 700's accidentally firing when removing the safety, but you will never hear of a Remington 700 burning down a house. Maybe that's the reason they quit making them... Fire insurance costs too high.

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I have a house fire burnt Winchester 70.

FWIW.....I was offered one of these M-70 fire sale actions in exchange for a Jeweling job.... I turned it down.