Grendel and .473 bolt face

[nincomp]

I was thinking that something like silver soldering a small bushing into it might not get it hot enough to change the hardness but I'm not a 'smith' so I don't know. With something like a Remy bolt you could notch the bushing and the ejector would probably work with the Grendel case, maybe.

I hope that you only mean for bolt-action rifles. In that case, no soldering is needed on some bolts. The .473 bolt for the Savage 10 and 110 series only needs a different extractor.