|Bought some of this recently due to the value. Went out to test fire, and work on sight-in of a new Yanky Hill Machine Co. Upper... Only got through 40 Rounds.
The Good: This ammo was VERY accurate at short to mid range compared to Bulk Lake City 62 grain. (used 40rnds of that to sight in 100yrds prior to PMC, but it was too inaccurate to finish the job).
The Bad: This ammo kicks hard for its grain load. This was also leading to brass chipping off the back of the cartridge ejector due to increased bolt carrier group velocity. Still re-loadable, but maybe just 1-3 loads.
The Ugly: after 40 rounds, this cracked my polymer lower completely around the rear take-down pin. Fortunately the seller had a lifetime warranty and replaced it free of cost. Look at the ammo box. Its made in SOUTH KOREA. This ammo appears the same as most 5.56, but the contour of the bullet may put it in contact with the barrel rifling upon chambering, prior to firing... good for accuracy, but bad b/c it generates more pressure back on the bolt/chamber upon firing.
The Take Away: This ammo is accurate, cost effective, and clean. However, make sure you have the hardware to deal with it. I still think its worth it if you are like me and have multiple lowers (polymer, aluminum, and reinforced versions... the next up, aluminum one, is holding out just fine) but just DO NOT run it through if you finally finished your 1st build and are not sure your hardware can take it.|