i may be able to help you out on two counts here. I have a rh rem 700 la, matte finish, no j-lock and a rock 6.5/.284 barrel, stainless, 8.5 twist finished at 26" in rem. Varmint countour with a .290 neck that i may be willing to part with. I don't really have a desire to sell the action alone.
Fired 74 times in barrel break-in and limited load work up. Shoots 100 gr nosler ballistic tips, 130 gr barnes tsx and 142 smk's well. Not thoroughly tested yet. I'd sell you the barreled action, with bdl bottom metal, spring and follower + 47 prepped lapua cases for $725 + shipping to your ffl, +3% paypal if usps money order is not used.
I could also add an hs precision stock for another $200 (sporter contour opened up to accomodate the barrel, with cheekpiece .