Originally Posted by wdchuckhuntr
The .280 Remington and the 7mm-08 are the same bullet diamater .284". The .280's larger case capacity will allow it to acheive a higher velocity (and it does).
My speer reloading manual, #11, shows a max load for the .280 using 48.5 grs. of IMR 4064 at 2967 fps. This is with a 130 gr. spitzer.
The same manual shows a max load for the 7mm/08 uring 45 grs. of IMR 4064 at 3052 fps. Same barrel length, action, primers and brass.
With IMR 4895, the 7mm/08 328 fps faster.
With IMR 4350, the .280 is 40 fps faster.
With the 145 gr. and 160 gr. bullet, it shows the 7mm/08 faster in every single instance
The 175 gr. loads give a slight edge the .280 more often than not, but only a slight edge.
It sure seems that the 7mm/08 is every bit the cartridge the .280 and the .270 are. If not, I sure can't figure out why.