I posted this question a few days ago under the title "Montana Rifleman Actions", a company I would still like to get some experienced advice on as they produce what appears to be a sound action available to south paws. I'd also like to hear about their barrel quality and gunsmithing quality. But the focus of my quandry is caliber. I've narrowed it down to 6.5-284 or 6.5-300 WSM (obviously I want a SA 6.5). I plan to use bulets in the 120-140 gr. range mostly and am a bit leery of the barrel life of the 6.5-300. If I go the 6.5-284 route I can find brass of good quality (Norma) easily and could use a SA LH Rem. 700 action (if I can find one!) ANY advice would be greatly appreciated!