You should be proud of your accomplishment . It is a very nice looking rifle , and .75 MOA is beyond acceptable before any load development . I especially like the mag well mod and the detachable Archangel mags .
I also shoot 26" barrels on both my M-N's and I've got a load that works pretty good in mine .
OAL....3.005" to bullet tip / or if you set off the Ogive , I can get you that dimension , also .
I neck size the cartridge to .307 using a Lee necking Die with a slightly adjusted .308 pin .