Yeah, like pa_dweller implied, Garands did not have 10 rounds. In the original design they did, with the new .276 Pederson round. However, when the Army stuck with .30-06, the en-bloc clip was reduced to 8 rounds, and that’s the way they were fielded.
Okay, I screwed the pooch on the 10 round magazine. Mea culpa.
Still an 8 round magazine in a semiautomatic beats a 5 round stripper clip bolt action every day of the week.