Re: 6.5 x 47 rechamber question
Is this an Encore bbl?
I guess it would depend on the dimentions of the 6.5x47 vs. the 6.5 Grendel. Isn't the Grendel a shorter round? (I don't have the measurements here to tell) If so, the answer is no, but could be under certain circumstances, meaning bbl taper (it would have to be a full bull bbl), and someone who could reset the lug and reinstall the extractor. that's still assuming it's an Encore bbl.
I'd send it back (make them eat it, their mistake), and re order a new one in a 6.5 Grendel and have it in a heavy bull taper about 14-16" That's plenty of weight to shoot a scoped Encore accurately without too much recoil.
I had a Encore (I wish I hadn't traded it) in a .260 Remington with 14" heavy bull bbl without a brake that I could shoot steel chickens quite accurately out to 300yds. Lots of fun, I won a few bets with that hand cannon.