Pump gas or race fuel?

I ran a 12 1/2 to 1 piston in my iron head closed chamber max wedge. Since i didnt want to deck a collector block, the measured compression ratio was only 11 1/2, and i used a considerably bigger solid roller than yours, but yes, i ran it on pump premium.
Now that i have access to 100LL, I would have run a 50/50 mix..... or maybe just the avgas.