Probably more. Less expansion, more penetration.I wonder how much penetration using a 7 1/2 pistol upper
It's in retail stores but online is much, much cheaper:Gonna pick up some if I can find it .
I just ordered a 500 round case recently. I tested out a box of the 55, 62, 68 and 75 HP loads and found the 55gr and 75gr condo best in my rifle. I've gone through a case of the 55gr HPs but I think I will focus in the heavy loads since it is only slightly more expensive. I will be putting these up against 77gr OTM IMI "Razorcore" and the Magtech 77gr OTM in a comparison test soon. I have heard great things about the Magtech load which is cheaper than the IMI but the Frontier is the cheapest heavy 5.57 match load you can get. I really appreciate what the Frontier ammo line represents. After decades of drastically inflated ammunition prices this line provides a high performance option at a reasonable cost. I hope it makes these companies a lot of money and that they continue to offer it for a long time.I really like the frontier 75 grain hollows...I suspect probably one of the most accurate cheap loads out there.