First for me was a Winchester lever action 30-30, manuf. around 1971. Came with a nice side mount scope which was worth more than the gun, I got it sometime 1977. I couldn't get it to shoot anything acceptable, had 2 other people that knew a lot more than me about guns at the time and they couldn't get it to shoot either. Sold the scope and mount to a family friend, told him I was giving him the gun and why. He also thought he could figure out what was wrong with it. Next time I saw it was on the mantel above his fireplace without mount and scope, actually looked good there. We shared a laugh about that was where it belonged.
Next was a sporterized British 303. Every third or forth shot would be a flyer. No big deal, I bought it for $50 and sold it for the same.
Last was a S&W Bodyguard 38 Special. It was my every day carry for a couple years. I tried to like it but just couldn't shoot it very well. One day while I was rotating carry ammo I dry fired it a couple times and it locked up on me and had to go back to the factory. When it got back I sold it to a family member with full disclosure.