Can't hit anything
My field switched to these a couple of weeks ago and I have not been happy with them at all. The seam is horrible and, along with its football shape, causes constant barrel breaks. That was with paint that was only about 3 weeks old.
In a day I went through about a case and a half and probably had 15 barrel breaks with my biggest bore in. I can't even count how many easy kills I lost because of either breaks or terrible accuracy.