Congrats on the 870. Picked up the express model myself a few months ago. Going to the range? Get ready! LOL! I've alternated slugs and 00 buck in mine for HD, and got the four shot side saddle as well. After your range trip, you may want to look into some of the reduced recoil loads available for the 12ga. Get your wife behind it? How long do you want to be in the doghouse?