I ordered 50rnds of this ammo to see how they pattern from the usual distances in both shotguns. This round is taller than the usual 2 3/4 inch slug, 1 oz in weight lead-free with a translucent hull. These guys are rated @ 1575fps and are made of steel with a galvanized coating to prevent rusting, also this round is supposed to be a ideal round for the semi-auto folks with light recoil and outstanding long distance performance. I will find out this weekend, I have 25rnds of Rio #4 buck coming in this week also.