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-   -   Mark on M1903 Bolt (http://forums.thecmp.org/showthread.php?t=221445)

M1903A3 01-07-2018 04:56 PM

Mark on M1903 Bolt
 
Guys, there's an "H2" stamped on the bolt lug of my 1918-made M1903 Springfield.

Does anyone know what the H2 marking means? A Google search didn't turn up anything,

Thanks for your help!
Phillip

eldestbrother 01-07-2018 05:03 PM

http://www.vishooter.net/slc4_2008.html

M1903A3 01-07-2018 05:14 PM

That's interesting. The receiver is an 827XXX serial and an SA 5-29 barrel from a rebuild, and the bolt has a swept back handle, so it's definitely one of the double heat treated ones.

Did they use different lots of steel for bolts manufactured several years later?

eldestbrother 01-07-2018 05:19 PM

I cannot answer that, if John Beard shows up and sees your question, he will.

John Beard 01-07-2018 06:03 PM

Quote:

Originally Posted by M1903A3 (Post 1671327)
That's interesting. The receiver is an 827XXX serial and an SA 5-29 barrel from a rebuild, and the bolt has a swept back handle, so it's definitely one of the double heat treated ones.

Did they use different lots of steel for bolts manufactured several years later?

Seasons' Greetings!

My study found that the H 2 bolt steel lot code was used prior to WWI. While I cannot rule out the possibility that a small batch of H 2 steel might have re-surfaced after WWI, that likelihood is extremely small. If your bolt has a swept back handle, a far greater likelihood exists that the "double heat treated" handle originated from Bubba's blowtorch. It wouldn't be the first time, or the second, or the third,....

Happy New Year!

J.B.

M1903A3 01-07-2018 11:41 PM

Would it have been common for an older straight handle bolt to find its way onto a high number receiver during a rebuild?

-Phillip

John Beard 01-09-2018 09:05 PM

Quote:

Originally Posted by M1903A3 (Post 1671430)
Would it have been common for an older straight handle bolt to find its way onto a high number receiver during a rebuild?

-Phillip

Seasons' Greetings!

The military never removed straight handle bolts from service; only low number receivers. So yes, an older straight handle bolt could find its way into a high number receiver during overhaul.

Happy New Year!

J.B.

M1903A3 01-12-2018 04:19 PM

Gentlemen, I may have to revise my statement about how much this bolt handle is "swept." I took my Remington 03A3 out of the safe and compared the two bolts. It would seem that the bolt on the 1903 is maybe swept back a tiny bit, but nothing like my 03A3.

At any rate, a very generous forum member has given me the opportunity to put a correct double heat bolt with the rifle, with choice of multiple bolts with the correct lot code to get the headspace right.

That's what I love about this forum!


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