; I think an 8" might work. I do recall the typical 10" twist wasn't too hot when the 250gr. Barnes were running around the moose woods here with some guys. Accuracy was quite poor, except in the magnums which, of course, drove them somewhat faster. The 2,200fps or 2,250fps of the '06 was deemed to be a bit too slow for these pencils. If you want to compare this with the .318Rigby, don't, the .318 shot a .330" bullet, I believe and twist requirements are, of course, slower for the larger bore, shorter bullet.
: A 'good' 250gr. solid .30 cal bullet 'should' out-penetrate any 480gr. or 500gr. .458, 500gr. .470 or 520gr. .50 when they are all driven at the same velocity as penetration, given identical bullet construction is dependent upon stability inside the target material and sectional density alone. Is this now saying that the '06 is 'better' because it penetrates more deeply? Is this deep penetration the only criteria to establish a ctgs 'desirability' on dangerous game? I think not to both.
: Then, to compare the suitability or a 250gr. .308 bullet from an '06 against a 400gr. or 450gr. .458 bullet from a .45/70 - why? what does this prove, asking a bunch of guys
who haven't used either, which they would prefer.