I've used RST 7's on grouse and roosters, and handloaded 7's as well. As previously stated, I've always had high marks for RST loads. The
first rooster I killed with my French 16 was 7/8 of 7's , a January in Kansas. I think even Larry would consider that "late season."

7's are a versatile, somewhat underutilized shot size in my opinion.

Mike

Tolerance: the abolition of absolutes

Consistency is the currency of credibility