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CMP Warning Against 30-06 Ammo
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Yesterday the CMP sent out a warning against using commercial 30-06 ammo in any surplus military rifle, including M1 and 03.
Saying what I have said for decades; 30-06 is NOT the same ammo as these rifles were designed to fire, giving at least 10K psi more pressure, and often more.

I don't know if there was an incident, it it was just a routine warning.
Anyway, if you want to read it it's on their web site.
 
Posts: 14068 | Location: USA | Registered: 02 August 2009Reply With Quote
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Here's a revised notice.

Dear CMP Family,

The CMP advises to not use .30/06 ammunition in M1 Garands, 1903s, and 1903A3s that is loaded beyond 50,000 CUP and has a bullet weight more than 172-174gr. These rifles are at least 70 years old and were not designed for max loads and super heavy bullets. Always wear hearing and eye protection when firing an M1 Garand, 1903 and/or 1903A3 rifle.

This warning is an update/addition to the Ammunition section in the Read This First manual enclosed with each rifle shipment (M1 Garand manual-page 6 and M1903 manual-page 10).

Civilian Marksmanship Program


Jim
 
Posts: 436 | Location: Winter, Wisconsin, USA | Registered: 19 December 2010Reply With Quote
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Makes sense. The .30-06 Govt was designed based on a lengthened 7 mm Mauser just after the turn of the 20th century. Probably developing similar pressures (45k-49k). Modern commercial ammo indicate 60k + pressures. I don't consider 172-174 grains "super heavy" in a .30 cal. Now 220 grains would be.

quote:
Originally posted by dpcd:
Yesterday the CMP sent out a warning against using commercial 30-06 ammo in any surplus military rifle, including M1 and 03.
Saying what I have said for decades; 30-06 is NOT the same ammo as these rifles were designed to fire, giving at least 10K psi more pressure, and often more.

I don't know if there was an incident, it it was just a routine warning.
Anyway, if you want to read it it's on their web site.
 
Posts: 2832 | Location: SC,USA | Registered: 07 March 2002Reply With Quote
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The original 30-06 (the 30-03) used a 220 grain bullet. Pressure was well below 50K psi though.
 
Posts: 14068 | Location: USA | Registered: 02 August 2009Reply With Quote
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No problem don't pollute your barrel with modern factory ammunition.


Swift, Silent, & Friendly
 
Posts: 425 | Location: Nevada | Registered: 14 July 2003Reply With Quote
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Schuster Mfg.'s adjustable M1 gas plug makes this 'problem' a non-problem.

Install it in your M1, tune it with the internal screw, and shoot any 30-06 ammo you like.

Easy-peasy.


All The Best ...
 
Posts: 813 | Location: Texas | Registered: 15 October 2015Reply With Quote
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