Best shot ever... was probably with a .177 pellet rifle. My friends and I, young and stupid, were walking in the woods, near a pond. Saw a duck on the water, center of the pond. Buddy bet me I couldn't hit it from where we were (about 80 yards away.) Pumped it like 12 times, took aim at the body of the duck.
POW!
thwack
Duck keeled over to the side, dead as a doornail. When we got close to it, we realized I had hit is square in the noggin. We also realized it was more of a duckling... not a baby, but definitely not a full grown duck. I felt lower than whale poop.
I swam out to get it, and we gave it a proper burial.
But my best shooting was about a year ago, when I went skeet shooting with my two bosses. I had brought along a couple of handguns and rifles in addition to my trap gun, so we could plink around after.
Stapled a target to a tree, stuck a green Shoot-N-C over the center. Stepped 12 yards back. Proceeded to place 18 rounds, rapid fire (1 shot/sec) in the 9 and 10 rings out of my 9mm Taurus 24/7. Not one shot fell out of the nine ring.
My bosses went nuts. One, ex-army airborne, complimented me. The other, redneck good-ole boy type, was hootin' and hollerin'. "Gawd Dang boy, you sleep with that thing under yer pillow er sumpin' ?"
That Taurus, to this day, is still my most accurate pistol, at least in my hands, even more so than my SIG 226.