Thanks for the links. I'll check it out.
Very nice hardware, interesting stuff, some aspects may have to be incorporated.

If I was interested in pure benchrest and 1000 yard, then I'd probably go with the 50BMG (matches my personality), but at 33 pounds or so I consider it unfeasible for hunting use.

Not interested in pure benchrest shooting even though a considerable amount of bench and field practice would be involved. All I need is a lousy 6" or so group at 500 to 600 yards. This is going to be a heavy hunting rifle max weight 18 pounds (my 375 H&H M70 is 13 pounds ready to go and is very doable) something that can be carried in miles, shot off of jerry rigged "field bench", a rock, a backpack, or a tree while standing --- I will need to be able to get my hand around the forearm or support the forearm with a hand brace onto the side of an aspen tree.

Greg, I've looked at the 300RUM #'s, not bad, you already have a M700, so if I may ask what is the big deal about a Sendero?

EKM