my 280 AI is 2.25 lbs lighter. With 140’s a 3200, there’s not much it won’t do.[/quote]
Maybe ? at insane pressures !
Jerry [/quote]
My 25" barreled 280 AI overlaps my 23" barrel 7RM until you use 175s or heavier. The 280AI out runs my 7RM with 160s. Maybe a slow vs a fast barrel but more likely 7RM at 62,000 psi and the 280 AI at 65,000 psi. I like the 175s and 180s in the 7RM so it is not obsolete by any means. My 280AI has a 1 in 10 twist barrel I got for a bargain so I stop with 160s in it. My 7RM has a tight chamber and long throat so I run it at near 7 Weatherby speeds pretty easily. With older powders I was leaning on the 7RM to get 3200 fps. But with several powders like R22, MRP, 7828, H1000, R26 and others it is not hard to achieve in both cartridges. One gun writer wrote that just because you can't slam dunk a basketball it doesn't mean other can't. The "Happy" 270 can get 3200 fps with a 130 so not out of bounds at all for the 280AI to do this with 140s. In fact the 270 works so well with some of the newer powders it is chomping on the heels of my 270 WSM and my 7RM.
"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli
