26 inch PacNor barrel, 3 groove 9 twist, Nosler case, BR2 primer, 63.5gr Retumbo, VLD168, 2.791" base-to-ogive, @ 3015fps.
I have just a plain ole 280 rem with a 23 inch barrel and I just loaded a few with the 168gr Classic hunter as well and they seem to shoot very well. Was pleasantly surprised at velocity from the Magnetospeed.... 2920fps
Shot a cow elk last week (only 40 yards) it put her down quick.