You can make a one inch fifty yard gun, but it costs a fortune, and reliability suffers.
Well...Not always. Reliability and accuracy aren't mutually exclusive, but having both in the same pistol does require a talented builder, and it costs money. Like the guy at the speed shop said when the kid asked how much to make his car go fast.
"Speed costs money, kid. How fast can you afford to go?"
Northern Virginia based Jerry Keefer is building some of the most wicked accurate pistols to ever come down the pike, and they're all dead reliable...dirty or clean...dripping with oil or dry as a popcorn poot...but Jerry's services don't come cheap.
Nor is "loose" any guarantee of reliability. Too loose is as bad or worse than too tight. Too loose gives more trash...and larger pieces of trash...the opportunity to gum up the works.