Originally Posted by
Zero333
The deal here is a 20" bbl right ???
Ran the #'s in Quickload and....
7mm-08 with 162 amax, 3.00" coal, @ 59,000 psi, 20" bbl gets about 2,635 fps with common powders, and up to 2,647 fps with Ramshot Hunter.
7mm-08 AI, 162 amax, 3.00" coal, 59,000 psi, 20" bbl = around 2,675 fps with common powders, and up to 2,713 fps with Norma MRP.
280 Rem, 162 amax, 3.400" coal, 59,000 psi, 20" bbl = around 2,765 fps with common powders, and up to 2,797 fps with Norma MRP.
280 AI, 162 amax, 3.400" coal, 59,000 psi, 20" bbl = around 2,800 fps with common powders and up to 2,835 fps with a compressed load of RL-25.
If the barrel length is changed to 24" or 26" the gap between the 7mm08 and 280rem is even bigger.
My brother hunts with a 7mm08 and in a 7.2 lb rifle shooting 140's at around 2,770 fps (22"bbl), the recoil is no different than a 308win, and the ballistics ain't that much better than the 308win.
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