Thanks Peter. Can you explain to a non-engineering sort, like myself, why the flexibility would lead to the observed accuracy issues? What changes from shot to shot or group to group? It reminds me a bit of a similar historically documented accuracy issue with another fairly light weight, rear-locking rifle- the Tokarev SVT 40. The Soviets documented substantial headspace expansion upon firing due to stretch plus the bolt lockup is asymmetrical. The SVT, supposedly, would put the first shot many inches away from the remaining 9 which might group well. This first shot flyer was, obviously, a big problem for the newly designated sniper rifle. Strangely, I haven't been able to replicate this phenomonon with any of my SVT's using standard military spec ammo. Regrards.
Ridolpho