I need to ship a rifle out to an FFL in another state. Last time I needed to do this, I had a local dealer do it. Unfortunately, for whatever reason, they don't offer this service any longer.

Another dealer in town offered to ship it, but they wanted money for a transfer fee, which seems weird if I'm shipping it to an FFL out of state.

In order to send it out, I need to source a box to put the rifle and hard sided case in. The local UPS store quoted me $63 to custom build a box (no shipping, just the box) which seems outrageous.

Since I don't have an actual box that will fit it, can I just make one by cutting up and taping together a box of the right dimensions myself? Is there a better way to do this?