Gene - Transition to handgun! The only thing I've ever seen/done that half-way worked as an IAD was to dump the magazine first thing before racking the bolt. It gives a little more room for things to fall free if it hasn't wedged tight. Then reload off your rack/LBE. Using the MILSTD SPORTS usually makes things worse and really jams things in place. I had a carbine that did this regularly (diagnosed extractor problem) that seems to work now that I've had my gunsmith fix the gas system, swap bolts and add an O-ring to the extractor spring. (Expensive name brand upper too - made it even more annoying.) My .02 - FWIW
Peregrino