I'm looking to start another project rifle, except this time I don't have my buddy in NY to help with the barrel work.  

I need a good gunsmith on Long Island, who isn't really expensive, or your general idea on what it should cost.

I'm looking to have a Chromoly barrel blank chambered, threaded, finished (matte) and crowned for a 308.  (Lapping the lugs and squaring the action also.)  It is already rifled.  

If I'm missing anything, let me know, but I'm looking for a ballpark price for this work on my Rem 700.

Anyone think a 300 short mag would be better for accuracy and distance?  

Cost? As much as you wanna spend. >gg<

I'd do a couple of things for locating a 'smith: 1)call the local gunshops & see who they recommend. Call several & see if the same 'smith is named by more than one shop.  2)go to the gunsmith's Top 100 club site & see if one is close to you. Check Am Handgunner web site if you can't find a link.

I'd stick with the .308 cal, IMO. Ammo choices are much much better than 300WSM.

Hope this helps.