I've had some Ruger mounts that worked very well, and others that needed a bit of tidying up to get them reliable.
The fact that they are a bit soft has never really bothered me as, if they were made too hard they could end up marking or indenting the rifles receiver.
Better to bend something on the mount than the receiver IMO.

In every case where I've had to do a little work on them, they ended up working fine.

Two Ruger 77's I've owned which were VERY accurate and reliable were both 300 Win mags.
One was the early tang safety model which had open sights as well.
I really regret ever selling that one, and it had never required any fixing of the mount system.
The other Ruger 300 was a stainless synthetic CRF which I bought new and it shot very well straight out of the box and the scope mounts were great and worked well from day one.

I also shot a tang safe 77 in 22-250 for quite a few years when I was shooting roos and wild pigs for a living, and never had any problems with the mounts at any time.

I guess I was lucky with those as I've had to tune up the mounts on other 77's including a .358 Win and a .270.

A lot of scope ring problems stem from misalignment IMO.

Carefull matching of the mating parts where the rings attach to the receiver, followed by lapping the rings and then deburring can work wonders toward reliable scope mounting.