110 FCP-HS 338 Lapua = cow patties

[darkker]

You aren't the person I was referencing, but perhaps you share the same problem.
1) those loads you say worked in "Other guns". Fine and dandy, THIS one is not THEM.
2) what are your specific loads? Listing some powders, and some bullets, and some dies isn't specific enough to help. Did you ever attempt to re-work your loads in THIS rifle, see if it is just off a node?
3) ALL barrels open up when they get warm, this one MAY be doing it more so than others.
4) Is the barrel properly free floated?
5) At what distance are you testing? Very long match type bullets GENERALLY don't group well up close.

You are obviously fed-up with your current situation, so your question from post #11;
"should I order a Brux (which is the best barrel I have ever used) or a Krieger ( I have never owned)? "

You SHOULD do what you think will make you the happiest. You already answered that question in your quotations.
Given my personal experiences, I wouldn't chose either of those brands. I'm sure they both make fine products, but I stick with what has worked for me.