"I found that compared to ball 5.56 ammo, IMI factory loads with 69 gr, Sierra Match King HPBT really helps me to shoot tiny groups out of a barrel chambered .223 Wylde."

For reasons I cannot understand or explain, my .223 loads in IMI military brass group significantly better from my Savage 112V than with anyone else's brass. And that's with about any load. I have about 200 IMI military cases I have reloaded numerous times, neck sized only.