I think it's a great experiment - I've tried some slugs with little success. I mean not awful but 3-4" at the 100 yard mark. That's still better than a lot of guns can do.
I'm sticking with pellets as that is what it is designed for. But the tinkerer in me tried the FX Hybrid, Daystate Howlers (best of the bunch), some NSA 43.8 and 47.2 (IIRC those are the weights).
I've got 100yard sluggers in the Huben K1 and the Mora, both .25, so I don't feel so obliged to try slugs to death in every platform.