I've used the eabco ones in my 30-30 . they were a little tricky. At first I thought it was just that they sucked, but then did some serious measuring on my loaded cases and figured out that they were seated just slightly off the base in some and they were erratic. I then tapped them on a table to make sure the bullets were fully seated and groups improved. I got about inch to 15/8 groups depending on the wind and my consistency. that;s about as good I've gotten with 30 cal bullets in that barrel.