This is in the discription on Brownells sight:
If you've got dreams of building your own bolt gun from the ground up, then the Bergara Premier Series Remington 700 Action is the perfect starting point for your dream gun. This action, available in both short and long lengths, is left completely in the white and features a bolt face compatible with all Remington 700 barrels.
Unless Brownells is getting something different, this is straight off the Bergara website:
"Then, at the Bergara USA factory, the barrel receives a Cerakote finish and is coupled with our proprietary Bergara PREMIER action, featuring a nonrotating gas shield,
coned bolt nose, and sliding plate extractor."
The
Bergara Premier action manual also clearly shows a coned bolt nose on page 6 of the PDF (Marked as Page 4 on the bottom of the page itself).
Unfortunately, Brownells doesn't show the actual bolt nose, but given the rest of the description of the bolt (floating bolt head, etc) I can only assume their comment about "all remington 700 barrels" wasn't intended to cover prefits.
Edit: Brownells also includes this in the description for the short action: "This ensures that the bolt head makes complete contact with the lug abutments, and a
cone-shaped bolt nose ensures that the cartridge feeds seamlessly into the action. "
So yeah, their comment about all 700 barrels is likely an oversight.