Many thanks for the replies.
When I shot the Hornady SST's, I was shooting 2 pellets of 777. Accuracy was good, no complaints there, but the expansion left something to be desired. I may look into upping the charge with loose powder and seeing how that goes. The last irk I have with that bullet was that they were a bastid to load.
I found a place with the Barnes expanders, and am definitely looking at them closely. I told my hunting partner that I would probably retire that rifle, but I may give it a stay of execution if the Barnes will run right.
Thanks again for the replies.