That's not the clearest picture, you really need to use a macro setting on your camera (the flower symbol), but it looks like you're talking about at the bend in the action, right in the corner. Is that it? Doesn't look like anything at all that will cause an issue.
I'll say this much about R700 actions from my experience... If you're a "perfectionist", they're not for you. Remington turns out a very efficient but bottom dollar action. They work, but they will not be pretty or perfect, which is why we all have them trued up by a competent gunsmith. If you want a perfect action, get a Defiance, Surgeon, (insert top tier action name here) instead. If you want a perfect R700, call TacOps. But don't expect perfect for $400 like a R700 costs.
It's a tool. Go hammer and disregard the little insignificant things!