I'm about to begin my first build and came across Remington Actions on Brownells, $549 for a blued 300 Win Mag. That seems like a high price for an action being that it's more than 50% of the cost of unused 5r. Is there and difference in quality of these actions making them ideal for a custom build? Or would I be just as well off buying a 5R and slowly adding to it? Thanks for any help!