The one thing that nobody has addressed thus far is the fact that most folks who have a 6.5/06 use .25/06 brass. The down side is that if one's .25/06 has a slightly oversize neck, then 6.5/06 ammo could potentually be chambered. IIRC, this was related to me by Ray Montgomery of Co.

For this reason, when I made mine, I specified mine being chambered to 6.5/64 Brenneke. (a.k.a. 6.5x.270) OK, so it's a silly millimeter longer... But at least it won't chamber in a .25/06 smile

For that reason, I would doubt that the major arms makers will ever make a factory 6.5/06. BTW, they load fine in .65/06 dies... - G.H.

"As you walk thru life, don't be surprised that there are fewer people that you encounter seeking truth than those seeking confirmation of what they already believe!"