I'm in the market for a Larue OBR 7.62. Since the wait for one of these bad boys is around 6 months I want to make sure I am making the right choice on barrel length. At first I was leaning toward 18" as a good compromise between weight/length and performance. The more I look at the .308, the more I lean toward 16". From what I can tell the 16" costs you ~200fps but saves weight and length. The gun will be suppressed sometimes so length is an issue. At this time I am almost certain that I want the 16" but what say the GTBRF? Am i correct in saying the velocity loss from 2" of barrel is negligible?