This ammunition is not "new". Applied Ballistics sold this ammunition for quite a while before Berger took over the munitions department. It took Berger some time to get production up and running, something well over a year. If you search Applied Ballistics here you will find plenty of posts regarding the quality and accuracy of this ammo. If you don't hand load, but are looking for the next closest thing, it was head and shoulders better than any other commercial ammunition I've tried.
I shot the 175 Tactical .308 load for a couple years in F-TR competitions out to 1000 yd, and did very well with it at the local level. Velocity from a 30" barrel was right at 2750 fps. I believe that load was actually developed using a 20" LaRue OBR, but it shot lights out in my GAP bolt guns. When it was produced by Applied Ballistics, I believe they were stating ES values should be 15 fps or less, but in my hands it was routinely in the range of 20-25 fps ES. Nonetheless, that's less than half the ES I normally see with FGMM 175 factory ammo. No way to know how it will do with different sets of hands loading it, but my understanding was that all load parameters were to be kept the same. In any event, I strongly doubt anyone will routinely see single digit extreme spreads, but it doesn't really matter. If one of these loads shoots well out of your rifle, you won't find better commercial ammo anywhere.