If I recall, the Norma .22 lr offerings have an RWS headstamp. The subsonics group pretty well for me at 25 yds, about .25". It wasn't super consistent out of my Ruger or CZs, definitely not as consistent as SK or Lapua. I suspect that they are RWS that didn't make the cut for the R25 or R50 or whatever and kicked down to norma.