so?
you keep acting like this matters for some reason
It does.
Near all that M1928 and M1sat in warehouses till after WWII, when it was sold cheap by the footlocker load in the civilian surplus market.
Could have been sent to the Philippines, along with the low serial M1903s. A dodgy gun with lots of surplus ammo would have done something, rather than those poor bastards making due with hand loaded BP shotgun shells and bits of water pipe.
As it was, it just sat around.
So new M1.276 ball could have been made, or as otl M2 .30 ball would needed for new rifles.
New cartridges would have to be made for the new Garand, no matter the Caliber.
At least with the Navy scam of 'repair' of Civil War Monitors, the Navy got new Steel Monitors that happened to share the same Bell as the ACW namesakes, and got use of those modern 1880s ships for a.couple decades.
That old 30 call stuff? Armed forces got nothing on that, besides Pennies on the Dollar.