Today I was doing some reseach on the .30-06 Cartridge, Ball, caliber 30, M2 as I wanted a standard to test various handloads against in my M1 rifles. The physical characteristics such as bullet weight, powder type and charge, velocity, and pressure were quite easy to find, however, I could not find a standard for acceptable accuracy in a service grade rifle firing this ammunition.
A search of the web turned up a lot of answers stating that the standard was between three and four m.o.a., but nobody gave any sources as to where this information was obtained.
I searched through FM 23-5 - (MAY 1965) U.S. Army Field Manual for the U.S. Rifle, Cal. .30, M1, TM 9-1275 - (JUNE 1947) - Maintenance U.S. Rifles, Cal. .30, M1, M1C, M1D, and Jerry Kuhnhausen's book "The U.S. .30 Caliber Gas Operated Service Rifles - A Shop Manual - Volumes I & II without finding the answer I was looking for.
If any member knows of an official government publication that states a minimum accuracy requirement for a service grade M1 rifle firing M2 ammunition I would appreciate knowing of this resource.