One only has to look as far as the vid in the OP...
Wolf Gold .223 Ammo - YouTube
...to find that Both the primers And bullets are sealed, and that the bullet is, in fact, cannelured.
As for Taiwan's ability to produce MilSpec ammo...?
Taiwan replenishing US 5.56 ammunition stocks
Or the quality of this ammo...?
Wolf is working with a Taiwanese arsenal now producing this ammunition.
20 rounds out of an M16A2 20 inch barrel at 1030 feet above sea level
with an ambient temp of 80 degrees F gave an average velocity of 3224 fps
and a SD of 19 fps
Out of a 16 inch 1-7 inch twist barrel it gave an average of 3074 fps
and a SD of 19 fps for 20 rounds.
I fired three 10 round groups off the bench using a Les Baer Ultimate National
Match Space Gun using the competition iron sights. Average group size at 100 yards
was 1.2 inches.
Zero issues encountered with it out of a 16, 20 and 24 inch gun.
Good news that Wolf has brought another manufacturer into the US market....
GR