Is the 40 cal flat point FMJ any better at stopping than 9mm or 45ACP roundnose FMJ?
I went to college with a guy who shot himself through the meaty part of his thigh with a 180gr flatpoint. He thought it was a good idea to clean his gun while drinking. Tissue damage was not as horrible as I would have thought and it went through-and-through. The ER stitched him up and sent him home. He was back out with us at the bars the next night, although he was limping a bit.
