Looking at my RAW .25 I noticed the carbon bottle is just touching the barrel sleeve right where the bump is on the bottle label. I can't help to think this can effect the poi??? When the bottle is filled, it is heated and more than likely expands a bit tipping it upwards. Of course the barrel cannot be indexed because of the transfer hole. If any of you have a chance, could take a look in that area?
I might add nothing is touching the bottle pushing it upward.