Well, what advantage does crf really offer? I know the prevailing theories, but in the practical use that I've experienced in the field hunting deer. elk and coyotes, as well as at the range, I've seen no difference between crf and push feed. I've had no more feeding issues or extracting issues for one system vs the other. I've been using both systems for nearly 30 years, and it hasn't made a hill of beans worth of difference. The extractor on R700's is just a little chintzy clip. You'd think if one were to experience an extracting issue it would be with that system. I've had stuck bolts in the R700, and more than once I've (or watched someone else) use a rubber mallet to bang the bolt open. The clip didn't break and the brass came out. Sako style extractors, like on a Tikka, also work fine. The one time I've seen the biggest extraction issue was on one of my dad's guns, which was a Ruger, and it is a crf. It completely failed, and the brass was left stuck. I'm sure there are people in the world who have had the R700 clip extractor fail on them. Just like I've seen a crf system fail. Statistically speaking, anything can happen when you have a large enough sample size. Maybe if I were to go hunting elephant, water buffalo, or lions I might 'think' I need a crf rifle, just because everyone says so, but for non-dangerous game it really doesn't matter either way in my experience.
I've also had a jam (at the worst possible time) with a crf rifle not feeding. So, it can happen to either system.
The crf system is fine, but so is the push-feed system. For myself, I wouldn't select one rifle over the other just based on that one criterion.
I've owned modern crf rifles, like a M70 Extreme Weather SS, and I still didn't like just pushing the round in and having the large extractor snap over the head of the brass. I've tried it, but it scores the brass and it seems to me like the edge of the extractor could still potentially chip. Maybe I'm just paranoid.
I got rid of that particular rifle, but it had nothing to do with the feeding/extracting system. It was too chunky in the pistol grip and I just didn't like the feel of it.
The accuracy and feel of a rifle are much more important than if it is crf or not. I'd far rather have an accurate and comfortable push-feed rifle than a crf rifle that doesn't shoot or doesn't feel good.