I personally built several when 7.62x51 was $120/case. Getting good enbloc clips are the key.
I hav a SA .308 garand with no issues.
Originally Posted By 12TH-MARINES:
Has anyone found one that functions?
No reason why one shouldn't work. All you are doing is changing the barrel. However, one occasionally finds a barrel with an undersized gas hole, and that causes short stroking. I have a Tanker Garand in 308, and it runs just fine.
Originally Posted By snaggletooth1925:
I hav a SA .308 garand with no issues.
This

yes Ihave a national match built by the USAMU functions fine.
Originally Posted By 12TH-MARINES:
Has anyone found one that functions?
How is yours malfunctioning?
May be a simple fix.
A few years ago I built one based on a CMP gun. Used a Wilson Arms barrel from Brownells. Never a malfunction.
I've had one for years....never one malfunction it's one of my favorite guns, I think the platform is better in .308