Mule Deer,
I appreciate the info about the higher MAP pressure issue/level ( 65,000 vs 60,000) which translates to higher velocity for the 30-06, including shorter barrels (both 22 and 24 inch mentioned in this thread). Got it.
I used the wrong term "complete burn" for powder, but should have been "more gas expansion,". as you wrote. I guess I presumed they were the same ( or related close enough).
A longer 30-06 barrel (26" vs 24" or 22" ) simply offers the potential for higher MV, allowing more powder combinations to reach 2700 fps (or more) with a 200 grain bullet from a 30-06, and likely at equal or lower pressure (less than 65,000).
Two inches of extra barrel will add about 25 fps/inch? So figure at least an extra 50+ fps-for a slower burning powder with 26" (vs 24") , and over 100 fps comparing 26" vs 22" barrels. Nothing to sneeze at-even with a max load of Reloader 26 with 200 grain bullets. Makes the 30-06 approach early-loaded 300 mags.
I will stand by my original comment:
"30-06, 200 grain bullet, 2700 fps....Best way for those three things to come together is with a 26" barrel, not 22" .
----- with the exception that "BEST way..." could be replaced with something like "" Easiest way... ". or "highest odds to reach 2700 fps with different powders... "
I offered that comment as shooters in this thread experimented with many powders to get a certain MV (call it 2700 fps), and many combinations did NOT make 2700 fps in even 24" barrels. A longer barrel will just get you there (2700 fps...and maybe 2800+ fps) with less fuss and time ("easier"), and at lower pressure, with different powders. I wasn't trying to change the world with the comment, or refuting anyone's results, just offering option that was not mentioned (26" bbl) .
A 30-06 firing a 200 grain jacketed bullet at 2550 - 2600 fps is still a fine-performing load.
