I have a bit of a dilemma and can't find answers on. It's about the screw hole countersink on SA and WRA rifles during WW2. The only thing I have as far as a technical specifications guide is Joe Poyer's book. Yes, I know it has a few errors, please don't ding me there but it is an overall excellent book to reference.
The question is this. The book states that from SN 70,000 to the end of production, the countersink is .250 to .310 of an inch. That in itself tells me that form the 70,000 starting point the countersink if good if it falls anywhere between between those two low and high measurements.
Now, I've seen web pages stating if the countersink is .300 to .310 of an inch, it's a post war production. The fact is there are no facts, I've only seen web pages with peoples opinions saying this without empirical data or technical manuals to back it up. Are there any tech sheets, manuals, web pages that definitively state that .300 to .310 is post-war production anywhere? please let me know in the comments. Thank you, fellow Garand Collectors.
The question is this. The book states that from SN 70,000 to the end of production, the countersink is .250 to .310 of an inch. That in itself tells me that form the 70,000 starting point the countersink if good if it falls anywhere between between those two low and high measurements.
Now, I've seen web pages stating if the countersink is .300 to .310 of an inch, it's a post war production. The fact is there are no facts, I've only seen web pages with peoples opinions saying this without empirical data or technical manuals to back it up. Are there any tech sheets, manuals, web pages that definitively state that .300 to .310 is post-war production anywhere? please let me know in the comments. Thank you, fellow Garand Collectors.
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