You must be the only guy on the site that I haven't preached to yet Everybody else is sick of me! The Sherman is a blown out .270 case with a 40 degree shoulder. It has less body taper than an A.I. and the shoulder is farther forward which allows approx. 5% more capacity than an A.I. but still maintains a good neck (.300"). It will duplicate the velocity of a Gibbs or WSM with better barrel life. I get 3200' out of a 26" barrel with 140 Bergers.......Rich
Is a long action Rem700 for the 260 Rem a good choice ? feeding problems ?
When that round's parent case (6.5x.308) was first used, 'twas in a pre-'64 Win. 70 classic long action with a standard .308 Win. box magazine. Any long action can be used but there'll have to be a spacer at the back of the magazine and a longer bolt stop.
For me time is short, components are expensive (primers approaching .$05 each, specialized dies are expensive, fire forming is a chore and so on.
A common 6.5-06 according to many manuals should propel a 140 gr bullet somewhat between 2700 and 2850 @ between 62-63 thousand psi. What ever would be chamber pressures for a 140 grain bullet at 3200 fps out of some barrel of 28 inches or less from any case .264 Win mag or smaller?
I can acquire a mass of 06 brass, a 8 lb jug of H4350, and numerous boxes of 100 gr 6.5 Hornady AMax bullets and produce enough ammo for an entire season of varmints. I sort cases and turn necks. My loads are very consistent usually running less than 15 fps (plus-minus) at the 3300 fps level with a 24 inch barrel. To distribute barrel wear I have 2 6.5-06's and pass up shots so my barrel won't get too hot. 123 gr. bullets work well in the 6.5-06 but I like the 100's for low profile targets.
For shooting targets my 6.5-.308 has been doing just fine for the past 2000 rounds plus. The 123 Hornady AMax does well out to 1000 yds and out performs both .308 or .30-06.
I use regular .30-06 and .308 brass for both. H4350 appears to give the best uniformity. Velocities differences between both are not much.
And how does the 6.5 Sherman not eat up barrels if it has more case capacity than the .264 Win Mag? Wouldn't it just be more overbore? How does it compare to the 6.5 STW?
It doesn't have more than the 264 WM, it has approx. 5-6 grs. less. It also has a longer neck and sharper shoulder which confines the hottest part of the ignition flame more inside the neck rather than into the throat. When the poster said it would "be close" to the WM, I believe he meant in velocity, which is true.......Rich