Get a copy of V. M. Starr's writings on m/l shotgunning. It's timeless.

Carry it capped, but at half cock. Make sure your caps are a gentle "slip fit" on your nipples, and squeeze the caps a tiny bit to flatten them just a little before putting them on the nipples. That way, they won't fall off of you tip the gun over sideways. Have the thumb across both hammers as you approach a point, and you can sweep both hammers back to full cock, with one move, as you begin the gun mount.