Check your M1917's for safety issues. Eddystones especially..

[Doco overboard]

The attachment may be a reasonable explanation for problems with bursting barrels.

WF Vickery writes about threading problems when fitting square threads. He wrote that the preparation of the cutting tool for (Enfield Krag and Springfield US models) must be carefully (expertly done) done and that in cutting a square thread .001 clearance should be left at the top and bottom of the thread by machining the blank .002 smaller than the bottom of the threads in the receiver and then cutting the groove of the barrel thread .001 deeper than the depth of the receiver thread.

I could see production haste could wind up having a few bad eggs in the batch and that after some time in service harmonics having a negative effect especially after proof test.

Attachment 102501

Information

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[RC20]

Hell yes there were failures.

They were making thousands of rifles a day with labor that came and went.

Its amazing they got anything done.

[cplstevennorton]

The attachment may be a reasonable explanation for problems with bursting barrels.

WF Vickery writes about threading problems when fitting square threads. He wrote that the preparation of the cutting tool for (Enfield Krag and Springfield US models) must be carefully (expertly done) done and that in cutting a square thread .001 clearance should be left at the top and bottom of the thread by machining the blank .002 smaller than the bottom of the threads in the receiver and then cutting the groove of the barrel thread .001 deeper than the depth of the receiver thread.

I could see production haste could wind up having a few bad eggs in the batch and that after some time in service harmonics having a negative effect especially after proof test.

Attachment 102501

This seems to be the spot what causes them to burst. I've seen this mentioned several times. Mentions of cracking barrels is reported from 1917 to 1947.