Jamie, I had TC ICON PH in 308 and 1:12 twist which I sold and bought LRP, I had no problem putting 150 - 175 gr bullets under 1/2" more like 1/4", of curse TC has 5-R riffling, but the idea is, if barrel done right it should shoot straight, I also have SPS-V in 223 with 1:12 twist, it loves 50 - 55 gr bullets, same accuracy as TC and both factory barrels.