Coyote,
Good post. Here is some recent "real world" velocities from some load development and work at the range in the past week.
280AI 24" Barrel Model 28 NULA. 62.9gr N165 140 TTSX 3140 fps.
7MM Rem Mag Sako 75 24" Spencer 71gr IMR 7828 140 TTSX 3320 fps.
The 7MM is throated a little deeper than most and can stand a little more powder. Looks like the 140 in a 280 AI slows down at least 50fps for the 2" of barrel (26" Wiseman) in Nosler #6. Will be working with both rifles and will have more data next week. Don't think the Ackley is a bargain in any sense compared to a 7MM RM except that it burns a little less powder and is a neat looking cartridge.
Thanks for the data in your post
Dave
