I had a friend who worked at his father's pawn shop. It was a big pawn shop, right outside a big USMC base. They took quite a few firearms in from young Marines who should have paid their bills instead of buying fancy, new rifles.
One day, my friend called me to tell me he wanted to show me a nice Browning before he put it out for sale. I went and saw a Browning BLR in 308.
He had the box and paperwork, along with a 20 rounds of (military) 7.62 ammo. It was the lightweight, straight grip, magazine fed lever action rifle with beautiful walnut woodwork. It looked brand new and I gave him about $300 less than MSRP. I thought I got a great deal!.
I took it to the range the next weekend, loaded 3 of those rounds in it and fired one from the bench. It felt like I got hit by a truck. Another friend who was at the range, laughed at me for whining about a 308. He shot the other two rounds, bought the rifle from me and I believe it still hangs on his wall, never been loaded again.