I think I've mentioned before that in recent years I've only flown with a Sportube ski case, and I have the usual decent hard plastic gun cases I could use. They telescope, and I wouldn't hesitate to use it if I had a longrifle as well as for shorter stuff. You have to come up with your own padding, but that's how I bring extra warm clothing along. I think there're three different sizes, so I think it'll easily accommodate the heavy drop in the stock. Only a thought, and at a modest price.