First of all this bottle sat around through two winters with the valve off so there was no propane residue. Shots fired were from 60 feet, the holes are from my 7 1/2" 44 mag Redhawk using hand loads that have 245 gr. Keith style hard cast lead bullets, CCI 350 primers and 19.5 gr. of Accuracy Arms #9 powder (very fast for lead but does not strip going through the barrel). As you can see I marked the 9mm and 40 S&W bullet dents, the 40 S&W dents were far deeper than the 9mm. I don't remember how many grains the 9mm was but the 40 cal was 180 gr. TC FMJ. If the Redhawk wasn't such a monster to hide on my skinny frame I'd haul it around for my ccw because in the about 30 years that I've owned it it's been a point and shoot for me, a couple of times I've taken deer that I'm sure I really didn't aim at with the sites.