someone on here had success using a paint removing product on the inside of the drum. I think it was called clean strip? They have a thread on the process here somewhere
In your case, you'll need to tape and mask off the outside to save the paint, then apply the spray product to inside. If you are lucky, you can save the paint job.
Rescued 22.5" OTS. SJS Mini-WSM. HEB briqs (rebranded Royal Oak). Pecan/Hickory/Cherry/Apple/Peach woods.
2016 Fuji Absolute 2.0 LE (for burning off all the great BBQ)