Yeah that’s Garand Ammo. The recommendations I have seen say best not to go over 168 and 150 should be fine.
I’m 308.
Im 308.
My Garands are .30-06; my FALs are .308/ 7,62 NATO. This is The Way Things Should Be.
That said, I had some lengthy experience with an 18-inch barrelled *Tanker Garand* in 7,62 a few years back, and it was a both a very decent shooter and a dandy little truck rifle, lacking an external magazine to snag and bump while bringing it into play.