Originally Posted By: midwestpredatorNever had a 6.8 but based on ballistic reports I read and on what I get from my 6x6.8 its my opinion that the 6.8 should have been a 6mm to start with.
If longer is not a hindrance, go longer. My 22in will do 58s at 3550fps, 70s are 3350.
The original 6.8 was initially developed for close quarters to 300 yards combat with 16" and under barrels for its nock down power with FMJ type ammo. If it had been offered up based on a 6 mm bullet and 30 cal brass we probably wouldn't have the option for either today.
I have been very intrigued about biulding a 6x6.8 to play with because of my addiction for biulding black rifles but if I could only pick one for defense, yotes, hogs and deer then it would definately be the 6.8 spc ll.
That being said to answer the question of the original poster. If it was going to be a designated Yote slayer based on what if seen ballistic wise the 6x6.8 should slam them and is probably what I would go with in at least a 20 incher or longer.