I had my 338 Edge built off my 300 RUM LSS...
Mark Moffitt at Last Frontier Custom Guns LAST FRONTIER CUSTOM GUNS
has the Edge reamer and I had him put it together with a 30" 9.5 Twist Obermeyer bbl in Rem Varmint contour, and Jewel trigger that I supplied, shoots the 300 Gr Nosler Accubonds like a dream, I got to hunt moose with it this fall successfully and the 30" bbl was not a hindrance
my Rem 700 action was not blueprinted but shoots fantastic, before you spend $$ on that put it together and shoot it, often times the extra work and $$ is not necessary, it can always be done later if needed, I applied the saved $ towards a Vortex PST scope
Mark machined the muzzle brake into the extra inch of barrel and recoil is about like a .30'06,
my 12 yr old daughter shoots it with ease
He also chambered my 30" Brux 9.5 Twist bbl Rem varmint contour in 338 Norma Mag I'm building, (I own the reamer and guages )
very close ballistically to the Edge on a shorter coal for my switch barrel project that will consist of 5 barrels all in different chamberings based on the 338 Norma Mag case