1st post...Polygonal rifling...

[Sarge]

I'm wanting to build my first 6.5G and am looking at a Black Hole 20" barrel. I see that they are polygonal rifling. Does the 6.5G like this type of rifling? It sounds like the 5.56 guys seem to think they are in the decent-good range in terms of accuracy. I also understand there might be a velocity advantage to these barrels. What are your thoughts.

Thanks,
Sarge