When allergies and other health problems forced me to stop shooting
NRA High Power matches I was shooting an M1A.

It was the best rifle I used for highpower matches. Started with a cut
down 1917 Enfield, moved to an M1 Garand and finished up with the
Springfield Armory M1A. My rifle was another shooter's back up gun.
It came with a fiberglass stock. Later, I traded for a birch stock because
I liked the look of wood better. The rifle seems to shoot the same with
either one. My younger son was the last one to shoot a match with
the M1A. He used it in the Heavy Metal division of a three gun match.

If I was able to go back to high power now I might shoot an AR. It's a
bit lighter and has less recoil.
I'd at least try the M1A once or twice.