Like Wildswalker said - I have a 300RUM that is seated an entire dial and a half back off of the lands and shoots very well. I was lucky too because the magazine length determined where the closest seating could occur with a 200 gr. NP. But, having said that, I like to start about .005 off and work back seeking out that sweet spot.
No sweet spot, no more rifle. Has only happened once. With enough patience and trying different components, reloaders have a much better opportunity to find that perfect load as opposed to purchasing factory ammo (which is much better than in years past).
I must admit that early on, I wouldn't have believed that I could have gotten even "reasonable" groups not seated right up against the lands. These days, wherever it wants to be seated, that's where I'll seat her.
