In my .280 A.I. I run 60.5 of R22 under the 162 AMax and get a verified 3050fps from a 24" barrel. Book load that I assume was pressure tested as safe and shows zero signs of pressure in my gun. My data shows the brass has 7 loads on it and yet to find any issues with it.
Again not a 7RM but not as far off as some would think.
