CAUTION: The following post includes loading data beyond currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information.
I ran a couple loads through QuickLoad to get it's prediction. SAAMI dimensions and 24" barrel. OAL max or .308 seating depth, as appropriate.
With a 150gr Hornady SP,
Max velocity powder, RL-17
With 110gr Hornady SP, Win748
.30-06, 59.3, 3,481 (max speed IMR30301 3,496)
.308Win, 52.2, 3,430fps
With 180gr Hornady SP, RL-17
.30-06-51.8gr 2790fps (Max Ramshot Hunter, 55.5gr, 2,798)
.308-47.7gr 2,752fp (max W76049.6gr 2,753fps)
Short version: There's not much difference.
Still happily answering to the call-sign Peetza.
The problem, as you so eloquently put it, is choice.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.
Last edited by Brian Pfleuger; November 16, 2012 at 02:45 PM.
Reason: Added Caution