I've got a 280AI Kimber Mountain Ascent rifle. I need load data for 140gr. Accubond and 150gr Barnes TTSX.

My Dad and I went w/ the Nosler load w/ 140s
59 or 60g of Imr 4831.
I have not put the speed gun on my load---yet.

For the 140 NAB use Hodgdons H4831SC start 61 Grains and work up. I am using Nosler brass and federal 210M primers bullet seated .0010 off lands. Getting 3120fps from 24" barrel accuracy is excellent.

H4831sc 59gr 150 gr schricco super accurate in my rifle same load with 150 gr barnes 1/2 min.past 300yds this is a light rifle