When it comes to big game rifle barrels there are round, octagon, straight fluted, spiral fluted–and, as of last year, triangular ones. Enter the new Remington Model 700 XHR (Xtreme Hunting Rifle), the first 700 to feature a sporter-weight barrel that in cross-section is triangular in shape (the concept was introduced in 2007 in a varmint/target iteration).