My Dad used to shoot in three gun matches.
At the time, a 16" AR would not make power factor, so he bought a mini-30.
He sent it off to a company in Texas that specialized in accurizing the mini 14.
I cost him a good chunk of money, he had a medium contour barrel screwed on and some other accurizing work done. It shoots pretty well.
The receiver was so out of square, when you look through the scope, the front sight is offset significantly.
Had auto ordnance been making the .30 carbine back then, it would have been a far better choice.
The mini 14/30 is a POS, which is a shame. It handles and points very well.
Bill Ruger was never interested in quality.