I am looking for a 7mmRemMag barrel. I have a Lite Varmint CBI in 6.5 Creemoor that I just finished and it seems to shoot very well. This 7mm is my hunting rifle so I want to keep the weight down but was thinking a lite varmint that is fluted would be light enough. I also want a muzzle brake on it. I am shooting 162gr Hornady SST now but may go to 168gr Berger VLD's. What would be a good twist? Could I go with a 24" barrel with brake that would make it closer to 26"?