Wal Mart being the worlds largest retailer tells them how to pack them and they do it that way ... 8 boxe's of 25 is normal for them ... Makes better sense than 10 boxes to a flat with events being 100 or 200 targets each anyway ... WPT ... (YAC) ...
Been shooting that Fed 1oz 8 shell for 4 years, had one miss fire, firing pin dented cap looked at it put it back in and bang away we went. Just bought 25 10 box flats from my local Wally World. Get to know the managers and sports department department heads at your Wally World, it pays off.
Also, most Wally Worlds take the 2 100 shot boxes out of the cases and display as one cardboard box of 100 (4/25's).
Back when shells were getting hard to get I got a bunch of the 200 box cases from a Wally World in Tulare, Ca. 1 1/8 8's. Stopped shooting them, too much recoil and scores were the same.
Matter of fact the only things I buy at Wally World is Shells and Dog Food.