Mine is a Polytech Chinese copy. Very embarrassing, but I gave my All GI parts SA Inc M1A to my son, so this is what I'm using now.
I have recently moved it from a used GI birch stock to the walnut wood set up shown in the picture below.
I haven't shot it since about December 2017 due to my shoulder issue mentioned previously.
It went to the range today. I used surplus FNM 1982 NATO spec ball, not match grade although this make and year is the next accurate 7.62mm ball I have shot, ever, only exceeded by 70s vintage RG ball that showed up on the U.S. market some years ago. I also shot Portuguese BF marked ball today, not quite as accurate as the FNM.
I re-sighted the rifle due to the stock and hand guard change. I also swapped out the muzzle brake the rifle had and installed a forged mil-spec flash hider with national match front sight. No bedding or shims, nothing national match. Standard weight chrome lined barrel. The stock fit is tight enough that I needed a rubber mallet to bang the trigger guard closed.
I adjusted initial windage by moving the front sight to zero so that the rear sight can then be used for reacting to wind shifts so it took about 20 rounds to get it where it needs to be.
The rifle was fired seated with a front rest for my support hand. Distance was 100 yards.
I didn't measure the group for the final three rounds, but it was more than good enough for these 64 year old eyes.
Take heart M14 shooters, your rifle is capable of great accuracy!

The rifle

The target. Only three rounds but I figured I'd quit while I was ahead. The barrel was well warmed up by this time.
I then moved to the 550 yd range and hit the steel out to 550 yards. The white dot in the distance is the large steel target at 550 yds.
