I shot a test sample of 10 with 24 grains behind a 75 hornady HPBT out of my AR with a 1:7.7 twist barrel. Off the bench with the irons I had a group of three touching, less than an inch to the right four touching, and three others close by. This was a 200 yards so I'm impressed to say the least. I have a large amount of ammo already loaded I need to go through before I load any more.
It looks just like surplus WC 846 and they state the military has been using it for years, but who knows.
Phillip McGregor (OFC)
"I am neither a fire arms nor a ballistics expert, but I was a combat infantry officer in the Great War, and I absolutely know that the bullet from an infantry rifle has to be able to shoot through things." General Douglas MacArthur