I WAS looking to pick up a Sendero 338 ultra mag and eventually build on it. I have been reading alot lately (maybe I should stop reading)and became interested in the Armalite AR30 in 338 lapua and the Weatherby Accumark "sub-minute" in 338-378. the sendero seems like a good point to start with and eventually add a mcmillan stock, brake, and as it wears out, a new longer/heavier barrel. but the armalite is already pretty much built up. and the 338-378 weatherby is the king of the hill, someday put on a heavier barrel. what to do? I will be shooting the heavy sierra match king 300grain bullet. long range 600-1000+ target and some hunting (deer,moose)once I am proficient. what would you do?