RGR, I did have a 6.5x47 ten years ago and let someone talk me out of it. I've always had at least (2) 250 Savages for kids or the SA, plus an Ackley for myself to play with. My latest future project list includes two 'quarterbores':
#1 is to build a version of the original Howa Alpine; I have the lightweight action, the Alpine stock, and a .257 barrel that fairly duplicates the contour. My original intention was to do another 250 Sav, but now I'm thinking that maybe the 25x47 would be a fun match for that setup - the only change would necessitate getting a new bolt but that's not a gamechanger. My barrel is a 10-twist and the little gun would probably never shoot anything but southeastern whitetails, so I think 100-110 grain bullets would be the ticket. I know the original 6.5x47 was developed for loads up to 66,000 by Lapua, taking advantage of the stronger case available with the small rifle primer - and that was the premise for the effeciency of the velocities obtained. I've always wondered why the cartridge was not pushed or marketed for hunting AND target like Hornady did with the CM. Still I'm sure I'll never really push the boundaries in this rifle - velocities in the 2800s with this little case would suit me just fine and still be a great kids rifle.
#2 will be a 25CM on a Sendero-type rifle/stock combo that will be mostly for punching paper and steel. As I do composite stocks, I've already started on my stock and have an action but still holding out on the barrel. I would still like to see Hornady or anyone for that matter, formalize the 25CM with SAAMI. I'm still gunshy after what Nosler did with the 280AI, so I'm not going to complete a build assuming that what ends up with the SAAMI stamp on it, is going to be what we all know as the 25CM today.
Anyway as Linebaugh says, I too would like to follow your continuing results/development if you don't mind sharing updates every now and then. My current 250AI is throughj 9-twist Rock Creek and pretty much those loads can be stepped down as starters when I do get going with a 25CM, but you're the only one that I'm aware has anything current with the Lapua.
Thanks much,
Py
Based upon history, I wouldn't wait on a SAAMI spec'd 25Creedmor - or, any other .25 caliber . . .
Why would you need a new bolt -
the [parent] 6.5x47 LAPUA shares the same case-head diameter as the 250 Savage (250/3000).
I also have a 6.5x47 Bartlein 1:9" twist barrel which fits the same BAT actioned Hunter rifle. When LAPUA SAAMI spec'd the 6.5x47, I acquired brass and had Hugh Henriksen make chamber reamers for 6mm; .257; 6.5mm; and .308 - as expected all GREAT reamers.
Following an appropriate wait, a few days before a tournament, a set of Ulrich 6.5 dies arrived, so, some bullets were made! Having never fired a shot through it, prior to the opening "commence fire" command, at a NBRSA registered tournament, the the 6.5 barrel (H-4350) was "tuned" during the 100 Yd. stage - the last two targets were "cleaned" - 100 & some Xes - I was 7-8 points "down" close to last place . . . but, it was exceptionally tough conditions that weekend -so, there remained some hope.
That barrel/bullet combination proceeded to nab the "fake wood" @ 200 Yd, 300 Yd, & the 200/300 Yd Agg. and was still good for 2nd in the 100/200/300 GRAND AGG . . . while beginning a tournament using a never fired barrel is not recommended procedure, I wanted to test the bullets produced by the then NEW George Ulrich 6.5 dies. Another GREAT Bartlein barrel and Ulrich die set were proven. There is no better proving ground than point-blank BR - either group, or, score.
There is a LOT of unproven "stuff" which will "work", but few willing to test/risk, "looking like a fool". Sometimes the uncommon disappoints . . . sometimes, as was the .25x47 LAPUA project, it's a rousing success - that initial Bartlein barrel never finished lower that 5th place in a NBRSA registered Hunter tournament. AND, still, to my knowledge, nobody else had one made and campaigned it on the circuit !

RG