I got some mighty nice patterns with my loads. It was a recipe that was originally developed and tested by Sherman Bell, and was for the 2 7/8" ten gauge. I used it in my big L.C. Smith 10. To be honest, tho', I never patterned the load without the buffer so I can't really say how much it improved it. I shoot hand loaded bismuth 4s, in non buffered loads now, and get very good results on ducks. I just built a 4' X 4' steel patterning plate, and one of my projects is to test buffered against unbuffered loads of bismuth on it, before next duck season.
Never used ITX either.
SRH
