I run this and boy is it fun. For social work it will keep all shots on a silhouette target's chest at 100 yds all day long. 1 ragged hole at 50yds. Barrel is 9.5 inches. Because I have several makes and lengths of AR-10 type rifles, I am very close to taking the plunge on building one with a 10.5 inch barrel. That way ALL my mags will be compatible. Not to mention muscle memory and malfunction drills will be exactly the same. So in my VERY humble opinion, stay with a 308 and make it logistically easier for yourself.