Ruger has no warranty. They have a commitment to customer service. Look it up - Page 48 of your new Mark IV manual. As Ruger customers, this works in our favor - and Ruger has always upheld their commitment to unparalleled customer satisfaction.
BUT... I will warn you, you're VERY likely to be disappointed in what Ruger does to "fix" your problem, because you don't really have a problem.
This particular issue is not cutting QC, nor is it a lack thereof - but I can understand how it's easy for a new gun buyer to get emotional, after doing a bunch of research, and after being so excited to get their new pistol home, only to find an issue, no matter how small it might be. All fixed barrel 22LR pistols are prone to that particular issue. What often gets touted as "tolerance stacking" around here ends up causing this itty bitty, insignificant issue, that your particular brain picked out as a problem. Most guys would have never even noticed it. It's a problem, but it's kinda like that scratch on the bumper of a new car - doesn't really effect anything, but you know it's there. No reason to NOT get it fixed, but I also would warn you, when Ruger does a function check with a different bullet and doesn't find any functional issue, you can't really be disappointed when they send it back with no modifications whatsoever. Your statements are the kind of irrational claims we've seen flying around about ANY manufacturer in recent years, simply because the buyer found something wrong with their new toy, then went online and started lambasting the OEM. If Ruger fixes it so it doesn't cause any superficial scraping on the bullet, great. If they don't, it's still a great pistol, and frankly, that issue is likely nothing more than superficial damage to the bullet and won't effect accuracy at all - and if they DO fix it, it probably won't actually shoot any better than it did so far. It might even shoot worse than it does now. My bet - they will function test it and find no issue, so then you'll be upset when it comes back with the same "issue." Note where those 'filings' are falling, there's really nothing to create interference - you could shoot for a decade without cleaning down there and it won't create a jam. You'd have hit your targets or killed the game, and wouldn't have ever had an issue - but you happened to notice it.
Here's another common occurrence, and a similar issue - go buy an AR-15 carbine for $500-700. It'll function just fine, but it might eject forward, and WILL beat the heck out of brass, leaving scratches and gouges everywhere. But it'll function just fine. Is that something wrong with the rifle? Yes. Does it ACTUALLY MAKE A DIFFERENCE for the shooter? Eh, not really. A guy can spend an hour with a file and some lapping compound and correct those scratches and gouges, or he can get fired up and mail it back to the OEM - where they won't do anything because nothing is broken or out of spec - and get even more fired up when it comes back with no change.
Given a non-stepped bullet, or a different ogive shape (different bullet weight), or a non-copper washed bullet, you likely never would have EVER noticed a difference.
It's an easy fix, but it's also a minimal problem. It's a scratch on the bumper of a new car. There are volumes of info online about how to OPTIMIZE the Mark Series pistols for enhanced performance, none of which Ruger really needs to do, nor are they wrong for NOT doing them. But all of these little tweaks do make the pistol run better, smoother, longer, easier, and more accurate. Owners should be willing to make some of those modifications on their own.
BTW - you WILL need to polish your feed ramp, on any pistol, every few thousand rounds. You'll also need to replace your recoil spring, somewhere around 3,000-10,000rnds depending upon the pistol model, as part of PM.
