Years ago, I got a similar looking gunbag from a local gunshow. The zipper was on the bottom/handle on top. I got home and checked to see if my Pre-ban Bushy would fit. I zipped it in and lifted the bag...
THE ZIPPER BLEW OUT AND DROPPED MY $1000 RIFLE ON THE FLOOR !
I was pissed, went back and returned it.
Now I make sure the zipper is on top, same as the handles, when I buy gunbags.