An extremly high percent of Triumph's will shoot an 250grSST or Shock Wave bullet with a Short Black Harvester sabot and 100to120 gr of BH209. I have gotten one group that was under a 1/4 inch and a lot of them under3/4 inch.
Another load a 250 Gold Dot with 90 to a 100gr BH209 and a MMP-HPH24 also shoots quite well and has given me bang flops on every deer and boar I shot with it.
The 200 gr Shock Wave is the one that gave me the best results untill I had BH209 to work with using 777 itwas the most accurate highest velocity load I could find. Lee