i just thought of a way to explain how tight...... ok first you got to suck through your pipe (or just know) how easily it is to hit dry (without anything in it) then you want to pack it as tight as you can with out making it [at all or] maybe just a lil bit harder to hit. also you should be able to hold the pipe upside down without everything falling out. and the smaller you break it up the tighter you can pack it in....but as said before you only want like 4-5 small chunks 6 at most....