If you were lucky (unlucky?) enough to score some 9mm ammo in the last few months (spring/summer of 2021), check to see if it's part of this recall. Apparently several batches of ammo from one productIon plant had a bad run of powder, which could fall to burn properly and cause a squib.
Brands: Winchester & Browning
Ammo: 9mm 115 grain FMJ & JHP
Dates: Purchased after March 25, 2021
Click the links below for the details and lot numbers.
Winchester: https://winchester.com/Support/Customers/Winchester-9mm-Luger-115-gr-Recall (https://winchester.com/Support/Customers/Winchester-9mm-Luger-115-gr-Recall)
Browning: https://browningammo.com/browning-9mm-luger-115-gr-recall.html (https://browningammo.com/browning-9mm-luger-115-gr-recall.html)