I have had problems with that ammo as well. I would throw HSM in the not recommended pile too. It has actually been worse than the CBC for me, about 1 out of 3 fail to feed. I might try both again down the road when the gun gets broken in a little better, but as of right now I won't be buying any more. No problems at all with PMC .308, American Eagle .308, Winchester 7.62, and Fiocchi .308. All 147 or 150 grain.