Very impressive accuracy. Looks like R23 and the heavier .270 bullets is a good, stable load, if not the fastest. Still, 58gr give right at 2950fps.
Nice thing about R23 is the velocity won't vary much over any temperature you would hunt in. A velocity of 2950 fps is pretty respectable, I think I was really stomping on it to get that with H4831.
I have used mostly 140 grain Hornadays Inter Lock and Interbonds and the Nosler Accubond in both the 270 & 270 WSM plus some 140 Barnes and they were all close enough so I didn't need to change the scope settings.. I think Jack OConner wrote that the 140s were for people who couldn't make up their minds between 130s & 150s. Guess that fits my choice of them.