I have a neighbor who did the same thing with a Kimber.
He is the son of my father’s closest friend. And he is a mechanical engineer.
He reloaded some ammo and measured powder with a new scale. Only problem was, he loaded more than 2X the amount of powder the maximum load specified.
It was a wonder he was not killed. The pistol was a total loss. He had a slight wound to the ear.
I watched a guy shooting a nice MDL 27.
After every cylinder he would bend over the bench and we would hear a bunch of tapping noises as he tapped out each fired case.
That gun was shot loose before it fired 300 rounds, out of time and spitting lead at the gap..
Had a buddy do same with a Norinco 1911A1.... Loaded 9 gr of 231 vs 4.5 and the thing sounded like super vel’s of days gone by ..... But stayed together long enough to sell it to me.... Still running strong but that 9grs of 231 is a rocket ....:o)
I reload and or weigh all my carry ammo, my reloading room has a dehumidifier and is air conditioned for a perfect 0% humidity and 70 degrees temperature ..... Commercial ammo is always suspect IMO.
Components stored properly last for decades. Roll yer own folks.
Stay safe !...:o)
Powder burns, or hearing damage?