I've had a RRA NM A4 on order for over a year and if it didn't show up soon I'm cancelling the order and buying a Keystone Accuracy barrel and building an upper. For those of you shooting ether RRA/Nordic/JP or Ceiner/Atchison builds, have you had any problems with CCI SV or Norma TAC-22 ammo? The reading I've done seems they can be hit or miss with lower velocity ammo. I'm looking for reliable ammo that will shoot good enough for me to practice Service Rifle at 100yds on reduced targets for standing and sitting. I don't need it to shoot like lot tested Eley in my competition bolt gun.