Have you seen this one?
52" at $21.99 shipped.
Exterior size 52" x 9";Interior size 50" x 9"
https://www.amazon.com/Bulldog-Cases-Extreme-Scoped-52-Inch/dp/B004Y6ZAA6/ref=sr_1_1?ie=UTF8&qid=1468432876&sr=8-1&keywords=Bulldog+Extreme+Black+Scoped+Rifle+Case+with+Black+Trim
I may end up actually trying this since I need something for my DLT.