Which?: Front first for small to medium bores and rear first for the big guys to reduce the odds of doubling.

Why?: For me pulling the front first is a carry over from shooting shotguns (primarily SXSs) with the more open chokes on the right or bottom on O/Us. Of course all this has been thrown out the window with the introduction of choke tubes. Big bores noted above.

Affect Regulation?: Haven't found it to matter; can't see how it would.

Buchseman