A few years back I got fed up with shipping carriers. They managed to break 2 guns, denied liability in the damages, and refused to pay.
So, I vowed not to let that happen again. Since I started making these crates , I haven't had any damages.
For building materials I use 1/4" plywood, 1" rigid foam, 1x4 boards, 2" screws, 1" screws, and drywall nails.
Lay your gun out on the plywood, and measure for your gun, making sure you take into account the 3/4" boards all the way around.
This one ended up being 60"x 10 1/2"
Cut your plywood however is easiest, then cut your 1x4s to length.
Drill and countersink 4 holes in your short 1x4s, then screw the 1x4s together with the 2" screws.
Nail the plywood to the 1x4s, and you've got a box.
Measure and cut your foam to line the box.
Cut another piece of foam to fit on top of the first piece.
Lay your gun on the 2nd piece of foam, and mark all around it with a sharpie.
Cut out the foam to fit your gun.
Put your gun in the box, then cut more pieces to cover it in the box. Usually scrap pieces.
Use the 1" screws to put the lid on securely.
That's about it.
You could probably drop if off of a truck, and drive over it, and the gun would be okay.
I hope this helps some of you guys out. Having a gun break in shipment is a terrible thing.