I just bought a supernova so I can't speek for the super 90 but my supernova does not like the barnes expander slugs. At 50 yards, bench rest they shot an 8 inch group. Not impressed. Tried the Fed. Premium hydra shock and things improved, they shot a 3 inch group at 50 yds. Then I tried the Lightfield, 2-3/4", 1-1/4 oz sabot slug. Now I'm impressed! 4 shots cutting paper at 50 yds. Now we'll have to see how they perform on Deer on Saturday.
George
New Bloomfield, Pa.