I have experienced the same exact same thing with my 6.5-300 Weatherby. I can shoot about anything that I want with, tight groups, as long as I start with a clean barrel.
i have an xbolt that was shooting lights out,but now it's doing the same thing yours is. give me a call when you have a minute to chat. 276 701 2682 if i don't answer text me.
I would like to ask your advise and hear some stories from you some time. Im going on my first moose hunt soon and was planning on using the ELD-X. Could you give me more details on the moose kills?