5R Rifling!

[JJA Guns]

My understanding of 5R is mostly the bore is supposed to clean easier. I don't believe anything is better then your high end cut rifled barrels. Personally it probably has more to do with marketing than anything in my opinion. Firearms manufacturers have to have something new to sell to keep customers excited. Same thing with most new calibers that come out, most don't do anything that an existing caliber already does. That's one of the reasons I am drawn to the 6.5 Grendel. It offers something in a platform that really doesn't have a comparable competitor.