Originally Posted by snojnke
So the only thing to worry about immediately will be shortened brass life, no other concerns?
Just my opinion, but I would not be comfortable firing brass with 17thou excess headspace. Even the possibility of a major issue (a-la case head separation) is enough to make me re-evaluate. That 17 thou has to come from somewhere.
While I agree you can most likely fireform using a false shoulder, this is a band-aid only - you still have a long chamber or short brass. I don't like "special case" guns. When only the operator knows how to run it safely, the possibility exists of issues in the future as it gets passed down, sold, etc.....
I would try to get some measurements from other virgin brass to see which of the above it is. If it is a brass issue, I'd see if the manufacturer would replace it. If a chamber issue, I'd have it fixed.
My 2C only.