Guys, I am looking at building a lightweight tack driver, and have been looking for the best options available. I plan at this point to use a Rock 5R/ABS carbon wrap barrel, a McMillan stock, and possibly a Ruger 77 action. Reasoning for the Ruger? I like the CRF, and the Mauser type extractor. They seem to have a decent integral scope mounting system, as well. My objective is to build a very accurate rifle with a heavy profile barrel, as reliable under field conditions as possible, and keep the weight under 10 lbs. all up. I am curious about opinions and experiences with the M77 action for such purposes.