Stop in for a cup of coffee
here's a comparison of 1980s surplus PS.
Korean .30 Carbine Surplus Ammo- Mini Review - CMP Forums
For what it is, not bad at even 200 yds.
That said, I'm going to try MagTech instead of surplus at then next competition I go to. Assuming I have time to make sure it zeros about the same. Pretty sure the bigger issues are the nut behind the wheel.