CZ 527 Carbine Range Report: Part - 6

Today I got to spend some time at the range with my CZ 527 Carbine chambered in 7.62x39mm.  I finally sprung for some "good" ammo.  And by good I mean expensive.  I tried out some Hornady Black 123gr. SST rounds.  While I can appreciate the brass cases and the nice bullets, I feel like some of the surplus ammo I have shot preformed better.  But, it was a day at the range with my favorite bolt action rifle...