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  #1  
Old 04-23-2021, 03:43 PM
T18B40 T18B40 is offline
 
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Default SN range for 1903 rifles

What is the serial number range for 1903 rifles that are safe to shoot? It is in the 1.4 million range, with a 1909 dated barrel, which is original. Springfield Armory as well. Thanks in advance.

Last edited by T18B40; 04-23-2021 at 03:46 PM. Reason: Typo
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  #2  
Old 04-23-2021, 04:13 PM
SpearheadOrd SpearheadOrd is offline
 
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If 1.4 Million it is safe to shoot, the change in heat treat starts at 800,000 for SA and 285,507 (corrected) for RIA. The barrel may be an original SA but doubt its original to the receiver.

Airborne,
Mark

Last edited by SpearheadOrd; 04-23-2021 at 05:07 PM.
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Old 04-23-2021, 04:57 PM
ceresco ceresco is online now
 
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??? The # for Rock Island receivers is 285,507. I like your # better, however...... Good Shooting. ..
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Old 04-23-2021, 05:06 PM
SpearheadOrd SpearheadOrd is offline
 
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Was doing it from random memory, correcting my post

Thanks!
Mark
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Old 04-23-2021, 05:22 PM
Calfed Calfed is offline
 
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Quote:
Originally Posted by SpearheadOrd View Post
If 1.4 Million it is safe to shoot, the change in heat treat starts at 800,000 for SA and 285,507 (corrected) for RIA. The barrel may be an original SA but doubt its original to the receiver.

Airborne,
Mark

There is some uncertainty in exactly what serial number marks the change to the heat treating process at Springfield Armory. CMP now uses 810K as the earliest safe serial number for SA 1903's.
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Old 04-23-2021, 05:37 PM
T18B40 T18B40 is offline
 
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I figured it was safe, but I wanted to make sure a big THANK YOU for the replies and info as well! De Oppresso Liber.

Last edited by T18B40; 04-23-2021 at 09:33 PM.
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Old 04-23-2021, 07:09 PM
cplnorton cplnorton is offline
 
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This is what is interesting. It sort of makes me chuckle a little bit when I read that the CMP wants to be safe and therefore recommend only the 810k range and above be shot.

Because that is why the 800k number exists in the first place. The change wasn't at the 800k number. The change to double heat treatment occurred between the 750 to 780k serial range. This is published by SA in the 1920's so this is accurate as it gets.

The 800k number was set by ordnance already figuring in a huge buffer to be safe. There is no need for the CMP to come out and add another 10k to that number. But the CMP has no clue on that because a lot of the info surrounding most of this low number controversy is not factually based, and based more on word of mouth.

If you really want to get into it, Ordnance recanted on all of this and said they were all safe to shoot, but that is another topic.
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Old 04-23-2021, 07:24 PM
Mriflenut Mriflenut is offline
 
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Default 1.4 1903

You stated you thought your barrel was original? Maybe on a 400k receiver and i stress maybe. Better look closely that someone did not stamp a 1 in front of a 400k rifle to make it a high number. Pictures would let the experts decide. An expert I am not. Would not be the first time its been done.
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  #9  
Old 04-23-2021, 08:31 PM
Rick the Librarian Rick the Librarian is offline
 
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Quote:
Originally Posted by T18B40 View Post
What is the serial number range for 1903 rifles that are safe to shoot? It is in the 1.4 million range, with a 1909 dated barrel, which is original. Springfield Armory as well. Thanks in advance.
Chances are that, although the 1909 barrel may have been mounted on a much earlier receiver, I'd be willing to bet that the barrel is "original" to the 1.4M receiver. Whether rightly or wrongly, low numbered M1903s sent in for major overhaul usually had their receivers scrapped the the other parts used for later rifles.
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Old 04-23-2021, 08:50 PM
John Beard John Beard is offline
 
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Quote:
Originally Posted by cplnorton View Post
This is what is interesting. It sort of makes me chuckle a little bit when I read that the CMP wants to be safe and therefore recommend only the 810k range and above be shot.

Because that is why the 800k number exists in the first place. The change wasn't at the 800k number. The change to double heat treatment occurred between the 750 to 780k serial range. This is published by SA in the 1920's so this is accurate as it gets.

The 800k number was set by ordnance already figuring in a huge buffer to be safe. There is no need for the CMP to come out and add another 10k to that number. But the CMP has no clue on that because a lot of the info surrounding most of this low number controversy is not factually based, and based more on word of mouth.

If you really want to get into it, Ordnance recanted on all of this and said they were all safe to shoot, but that is another topic.
For many years, the final authority on receiver steels and heat treatment was "Hatcher's Notebook". And therein, Hatcher states that SA S/N 801548 was the highest known receiver to have ruptured from faulty (casehardened) heat treatment. So the CMP chose S/N 810000 as the absolute final threshold for double heat treatment.

J.B.
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