I will tyry to do a video, or maybe we can connect after the Wuflu and I will show how. I have a POSP 4x24 I had zeroed for my 20" Vepr back in 2005 in Alaska, took it on and off dozens of times, and it is still 99% zeroed. Same clamp..No sir I don’t know anything about them
Soviet military doctrine called for rifles to be folded and scopes attached before loading into BMPs. Had to be zeroed before deployment.