OK, I have posted way too many threads about my project, but each one brings me closer. The last post from a month or two ago brought me to the conclusion that my stable of rifles needs a 6mm of some sort. Donor: Older 25-06 Rem 700 BDL that my dad gave me, but shoots poor. I have a couple 6.5x55, a nice 7mm RSAUM, and I intend to invest in a 338 gun for big animals, in tough conditions, but for that, a "plastic stock and stainless" seems more appropriate.... I'd like a 6mm, and I am willing to fireform. But all the hassle of neck turning and messing with lesser quality brass is annoying.... I'd like something that starts with Lapua brass... 6mm Rem AI, or 6mm Crusader (same thing, basically) offers all I want in a LA 700. But no quality brass, except via complicated resizing from 7x57 mauser. Am I overlooking some other option to get to 6mm using quality brass that will perform well? I could just go with .243 Win. Great Lapua brass. But does not really use the LA at all, and has a reputation for burning barrels.... Perhaps .243 AI? Great parent brass, and to heck with barrel life... I should say -- this is not likely to be a high volume gun, so barrel life is not a huge issue. Perhaps then, I have answered my own question. Just go with the standard .243 Win. Someday my grandson who doesn't reload will be able to pick up a box of .243 for sure and shoot the old girl..... Other options?