I bought a hard shell rifle case at dicks sporting goods. It was $40 iirc. It has standard egg shell padding on the inside to keep everything in place. Other than be 3.5' long it is great. I have both my T2 and sterling in it. There is plenty of space for extra barrels, freak inserts and small hoppers.
Plus I fell like a professional hitman when I walk in to a field with a case full of weapons