I came across one of these last year and was wondering what everyone was using to get the best groups out of them?

I have read before about 220 gr. Dead Center sabots getting half inch groups, but never heard anyone say what powder or whatever.

Someone give me an idea of what you got.

Barnes 250 MZ Expander was always most accurate for me... 120gn of T7 2F...

In my elite, I shoot both 125gr of 777 FFg and 3 50gr pellets behind the 250gr expander and with a subbase. I am kicking over 2000fps 1" high at 100 and 8" drop at 200.