At the moment, I'm shooting 72 grains of RL15 under a 260 grain accubond in a 700 XCR. My previous .375 was a stainless Ruger #1 which shot the same load but used the ballistic tip. The Ruger was about 1.5 pounds heavier but kicked worse ... stock design, I guess. The Ruger was more accurate, around .75 inch, the 700 is more in the 2" range, both for 3 shot groups.
Prior to that, 20 years ago, I had a blued #1 which I fed a 270 grain hornady spire point and 70 grains of 4064.
That reminds me, though lower velocity, the 700 threatened accuracy with the accubond and 4064 the other night, .8" at both 68 and 69 grains, so while it's not tested, one of these days I'll re-shoot at 68, 68.5, and 69 and see if the results repeat.
Tom
