I have it running on no2
on 1 it wont cycle all the way. it will open far enough to get the case out of the chamber but not always eject and never enough to cycle
on 2 it runs fine most of the time (now I sorted out the reload problem) it will run on 2 with most any ammo
on 3 it really recoils (hammers)
I went through the RG42 brass from before I was reloading and its got the same damage
I am thinking the extractor might be too tight.