I just shot the Mcmillan sniper comp two weeks ago and the USMC team both had matching TUBB's in .308. They took the comp by a good 200 points! Check it out at
http://www.sniperschool.org/McMillan%20Sni...Competition.htm I must say, the TUBB is a slick setup, but it is a competition gun. I don't know how it would hold up in the field. Military and LE can get it through Mcmillan for about $2500. Just let them know if you are a cop or military and they give you wholesale cost.
As for the comp, it was fun, but mostly for police snipers. Military guys (except marines of course) had a hard time with the close shots. We shot all the way in to 10 yards! The farthest was about 600 yards, and there was a lot of range estimating. Try mil-ranging a 1/2 ipsc target at 575 yards... is that .70 mil or .75 mil???