Larry you have a little lower pressures with Longshot than 20/28 for a given velocity. Some of my favorite hunting loads you just can not make with 20/28. For clay target loads either will do fine. I have both on hand but tend to use Longshot more for higher velocity loads. They pattern well and when I can keep pressure down I tend to go that way. Another good similar powder is Proreach which has been hard to find until lately.