Originally Posted by
constructor
Most I have seen were from over-gassed carbine length barrels, after the mid gas barrels came out bolt breakage slowed way down. I broke a Colt and 2 Y/Ms back in the 90s at the cam pin hole. A few 7.62x39 and Grendel bolts around 2005-6 at the lugs each side of the extractor.
In the last few years I have noticed a lot of bolts being Nitride treated, I think over time those lugs will compress and headspace will increase to unusable levels.
It's interesting what you said about nitrided bolts. I have no skin in the games, as I don't have any nitrided bolts, but was hoping that you could expound on your last statement, please. Is there something about nitriding that would make the bolt more malleable so as to compress more readily than a phosphate or NP3 bolt? Thanks.
“You have made us for yourself, O Lord, and our heart is restless until it rests in you.” -Augustine
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