All things need to be the same in the magazine lip area. Check that.
Normally, I allow 500 rounds as a break-in period.
Clean everything, then re-lube. Then try a range session. Leaving the factory junk on could lead to problems (especially if too much was left in the barrel).
Keep track of the ammo lot numbers if using new ammo (and you should for the break-in period, don't allow someone to say you used "Hot" reloads and broke the handgun).
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT