Better than any arrows you’ll get in standard diameter. I did a ton of research and settled on these. I was extremely excited when they were all truly straight. I got ecstatic when I tried to find the spine maximum and realized these arrows were uniform all the way around (no seam). Today I put it to the hunting test and my arrow went through a mule deer diagnaly from front shoulder to rear quarter. I got a complete pass through, then hit a pine cone and finally went 4” deep into the hard rocky hillside. Yesterday I missed a grouse at 45 yards and sent an arrow flying into a gravel road. All arrows needed a new broadheads but are good to go otherwise. I’m running the stock insert with 50 grain brass weight, 250 spine, stock knock, 32” arrow length in total, blazer veins, and muzzy 125 grain broadheads. Total arrow weight of around 500 grains and 12% FOC. Total of .3 grains difference between the 6 arrows I finished for this season fully built out.