I saw this story posted a little while ago. The “50 cal. Wolff blackpodwer rifle”.........was said to be the one pictured on the CBS affiliates web site showed a modern 50 cal. semi auto rifle.
Got it wrong again! The best I’ve heard of was a year or two ago where the firearm was described as being “A semi automatic revolver”
Google “semi-automatic revolver”, there have been a couple.
Free Republic had a thread describing a gun as a "45 Auto Revolver" which was correct. It was a revolver chambered for 45 Auto cartridges. We had such a good time on the thread that it convinced me to buy a real semi-automatic revolver. Betty is holding one on my profile page. It would have been funny if they were chambered for 45's. Then it would be a 45 Auto semi-automatic revolver.
My personal favorite is the 40mm semi automatic pistol. I don’t care if I have to pay a $200 tax, I want one of those. I’m not sure who I will get to fire it for me, though.