I recently went back to 3 inch #5 Longbeards in my 870 with 26 inch barrel and a .665 IC tube. My patterns are really good out to 40 and the two gobblers Ive killed, April 1 and 2, so far didn't like the #5's..LOL
However, I did take and shake one of the shells and "you" could hear a couple shot moving around but like I said, it doesn't seem to be bothering the patterns..