Nosler lists a max of 63 grains of Reloader 22 and the 160 Accubond. I ran that tonight in a factory SPS with a 26" tube and CCI-250s. I got a pathetic 2789 average. And this is with a Magneto Speed chrony with is spot on.
I realize the books are a "guide"....but 3 grains is a schitt ton over isn't it?
Bob's post nails it. 63 is pretty anemic in 7RM under 160NABs IME. 66ish is what shines in many 7RMs for me personally, some bbls can handle more w/o any hint of pressure and great pocket life. I've used it enough that 65 is what I would consider a starting load
