My .270win in a SIG 970SHR is my most accurate rifle. I like "heavy for caliber" loads. My 150gr Nosler partition and/or ABLR over 51.2gr of IMR4350 gives me 2900fps. My longest shot was 605yds on a bean field, according to my rangefinder. I couldn't get enough elevation clicks out of my scope, I was six clicks short, so a bit of hold over was necessary. Anchored the deer where it stood, pass through. I've since put a 20moa rail on the rifle and will no longer have that holdover problem, Although I don't like taking shots on game that far out. It was just too big a deer to pass up.