The trick is we are running modern shot cups. I did a video last fall and showed the set up. Out of this 12 ga we are running 80 gr pyrodex with 3.5 “ shot cup and over shot card. The cup keeps barrel contact minimal. The trade gun in .62 is 80 gr of ffg and a 3” 20 gauge cup. It is impressive compared to what we’ve done in the past.
