Yeah I've got "took" a couple of times. Bought a TC Renegade (caplock) muzzle loader from a guy on gunbroker.com who lied and said bore was squeaky clean when it was filthy and pitted. The guy dropped off the face of the earth when I started raising hell, so I cleaned it up, polished the bore as best I could, and shot it.
The bore still looks like the surface of the moon, but I have a 12 inch round steel plate that I hang from a cable gate and shoot at. At 125 yards I can hit it every time with a 370 grain Maxi ball pushed by 100 grains FF powder using the open sights. That's what we call "minute of venison." Past 125 yards, the front sight is wider than the target, so that's where I stop.
I took 3 deer with it this year, so it'll do.