I guess it was mostly a general reply that anyone is free to answer. At this point one could simply buy some 6.5 CM brass and save it for that rainy day that may never come. Unfortunately the 6.5-06 brass is not available with its own headstamp and I suppose that it's possible one of the major brass makers would do it if one wanted to buy enough pieces. The easiest way to make 6.5-06 or the AI version is to seat a 6.5mm bullet in a new or fired .25-06 case. Since I have both .25-06 and 6.5-06 chambered rifles, I usually make my 6.5 ammo from .270 cases. I'll take one of each hunting next fall and load my 6.5-06 ammo in nickel plated cases just to avoid any possible mix-up!