Erik,
First I would like to congratulate you on your placing at the Berger Shoot, good shooting in challenging conditions...
So, a DISTINCT disadvantage to shoot a 6BR at 1,000 yards.
Never a more true statement under the situation you lay out. However if you consider F-Open as a whole I don't believe that the 6BR is anything but a good choice. While most or at least some of us F-Open shooters prefer 1,000 yds ( I certainly do ) most F Class matches are shot at the mid range distance of 600 yds. This is probably due to the ranges across the country with the facility's to shoot 600 yds vs 1,000 yard ranges.
The 6 BR "can" be a very good choice then (in my opinion) for F-Open even though it is challenged at a 1,000.
I personally am not of the belief that a new shooter is best served by as a beginner to start in F/TR as is common advice right here on this Forum. I know all of the arguments, have heard them dozens of times. In Open you will shooting against Custom Thousand of dollars rifles is one of those arguments. Another is you can shoot what you have, and this list goes on and on.
True there are a lot of customs in Open and I am sure that many of them cost thousands of dollars. I am amazed sometimes at just how quick you can add to the cost of a rifle. As an example I recently purchased here in the classifieds a Pierce action and it came with a McMillan Stock and Jewel Trigger. The purchase price was very, very good and I bought it just to have a spare action and stock as a spare if something happened to one of the three other Custom F-Open rigs I have went down for some reason.
When I got it I did not like anything about that McMillan Stock, not the way it looked or felt, so I thought I would just restock it. Ordered a new Shehane stock and then thought well might as well go on and barrel the thing. Installed a new 31" Krieger 1.125 straight barrel on it. Then I hear that little voice in the back of my head saying " What about a scope?" New Nightforce, rings, 20MOA rail later this supposed to be "SPARE" action had taken on a life of it's own and now was a complete Custom Actioned F-Class rifle ready to shoot any match anywhere. Cost? $5,975.00.
Now with that said a new shooter does not have to be as stupid as I am about this, start on a budget Stick To It and end up with a very good rifle built from a Factory rifle at a mere fraction of what I spent.
The Savage Model 12 F-Class rifle is a very good starting point, and one that is winning matches today as well. Everytime I read the results from matches I always smile when I see a Savage in the top two or three at a match, the smile comes from that Factory rifle out shooting all of those thousands of dollars Custom Rigs. And them I remember that its not the rifle after all, it is the nut behind the butt that is winning those matches.
Another reason given is F/TR is more fair and a level playing field since everyone is shooting the same caliber. Horse Pucky, there are many, many of those Thousands of dollars Custom Rifles showing up and competing in F/TR chambered in 308.
Also as long as I have to lay down and shoot against folks like Erik Cortina, Danny Biggs or Bob Pastor there is nothing fair about that deal, and there is no level that will fix that.
Roland