Greetings Jhon,
I have used some of the Frontier 155 grain projectiles in light target loads for my .308 which shot pretty well. I did sort them for base faults and culled about 15 out of 200 for fouling loads. I also tried some in my .303 two groove rifle and the deep rifling split the jackets and left a swirl of lead on the targets. This leads me to believe that they are pretty soft and may upset on impact but have not tested that. I would not be surprised if they came apart in a fast twist. I only shot them at around 1,900 fps with a light load of 32 grains of AR2206H. For me I wouldn't use them for anything other than goats and probably not even that. I don't have a shortage of .30 calibre projectiles.
Regards Grandpamac.
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