Decent ammo - Federal Premium SIERRA MATCHKinG BTHP .223 77 Grain Sierra MatchKing Boat Tail Hollow Point Centerfire Rifle Ammunition

This cartridge isn’t the best nor is it the worst. I was able to get sub-MOA with it but it was still around a MOA for the averages. Rounds are loaded pretty hot as I was getting 2718fps average from a 18” rifle. Now the downside… my SD was around 49. At some point my Chrono picked up a 4070fps round out of nowhere so threw some data off but even with it out of the equation I was still getting far spreads for the SD when talking premium ammo, let alone SMK cartridges. Out of 8 different manufacturers this performed the worst of the bunch giving the widest grouping and was more comparable to bulk ammo performance.