Outlaw, I can't agree with you in regards to the Predator. For run of the mill Ruger 77's especially older ones I'm right there with you, but not for the Predator. First off, let me state I am NOT a Ruger fan. I make only two exceptions when it comes to their rifles. One is the 10/22, I mean everyone should have one or more. They are just plain fun to shoot. The other is the Predator. Will it shoot? My experience is most definitely. Here is the very first 3 shot group out my .204 Ruger using plain-jane Hornady ammo 40gr Vmax. Could reloading tighten it up even more? Perhaps, but who cares it's plenty accurate for the limitation range of a .204.
As for your other concern's. Investment cast actions are not my favorite either, but we are talking about a short action here and not a super high pressure magnum. Regardless I still like it better than those butt-ugly Savage actions (of which I own several). All my Savages shoot really well and ugly me to death every time I look at them.
Three action screws, well it is what it is. A PITA perhaps, but in all reality not a very big one. That is getting borderline knit picking. I don't like the angled action screw but it can be bedded like any other action it just takes a little more attention to detail.
As for the Picatinny mount. You can buy a Picatinny mount to intall over the integral mount so that makes it a non-issue if one wants a Picatinny.
Lastly, I own two Predators and plan to buy at least one more. I also have 3 close friends that use Predator's. All of our rifles, without exception, shoot as well as the target I posted. Some even better with the group being just one enlarged hole. So they must being something right with their barrels these days. On that note the absolute worst rifle I ever shot "group wise" was a Ruger 77 walnut stocked rifle made in the 80's (before Ruger made their own barrels). It was a total *** as were a number of other 77's I have shot. The Predator is a different animal. As for gunsmith's turning their noses up and laughing. Well unlike the last 5 Remington's I bought I can't think of a reason why I would need to take it to a gunsmith, other that to possibly add an adjustable comb or have the trigger fine tuned. (Though the ladder may not even be needed.) I will stand by my opinion that it IS a better rifle than either the Savage and the DPMS. In fact, if you want to buy a Predator and trade me for one of my Savage rifles I'm all for it.