In the military in VN, the 50 Cal Browning on a tripod.
I wanted to pick it up and fire from the hip John Wayne style, but I'm really not as stupid as I pretend to be. Nor as strong, apparently, as the Duke.
EDITED to add: I don't actually remember seeing anyone in a movie firing a 50 cal Browning from the hip, though in some movies one of the guys cradles a 1917 water-cooled Browning and fires it. I've heard that John Wayne did it in one of his WW2 movies, but don't know if it's true or another bit of baloney.
The 50 stayed in its tripod and the tripod stayed on the ground. This was just a play shoot outside Phu Bai one afternoon. Can't recall why, just remember it was kinda fun, almost like going out in the woods at home for some target practice.
As a young policeman, another officer brought a 460 Weatherby and a 458 Win Mag to the range.
I shot the Weatherby first and thought it was not really that bad. I held it tight and leaned into it, and really concentrated on the trigger. I was truly surprised when it went off and more surprised that I hit the target where I was aiming. After a few rounds with that, I switched to the 458.
I was halfway convinced that if I was on safari in Africa, facing a charging elephant, I might have actually hit the poor thing in the forehead with the 460.
The 458 was much easier to shoot than the Weatherby, felt like a regular rifle and really was not unpleasant to shoot, though I expect more than a few rounds would have been way too many.
Later, taking a vacation day from work, I was shooting my rifles at the range and got to talking with another shooter who had a 45-70 Contender which I shot a few times and really did not enjoy. Then the range closed at noon and I was getting ready to leave when a RO pulled out a 375 Contender.
I was still leaving, but he called me to come try it. I wanted to say no, but was more afraid of being called a wus (which I readily admit I am-just don't wanna be called one). Two shots with the thing, a smile and thank you to the RO and I was out of there with a very sore hand.
Avoided that guy like the plague from then on.
Bob