I use hevisteel in both 12 and 20ga. Works well for me in those loads, not so much in the 28. Keeping shots at 30 yds and closer, the Federal 6s out performed the Hevisteel 4s. Agreed that the best way to go would be loading HW 13 but really don't want to start reloading again. I may be forced to do that if I want to shoot the 28 more.