To the recommendation of a well, capped thick wall PVC tube: That tube should be placed in a box. Recent experience of my shipping a capped tube with action and barrels attached demonstrated the need to box it. My tube's thick, removable cap broke but was held in place by Gorilla tape. The contents were undamaged. This same tube had shipped a half dozen barrels all over the US and back with no problems until the last time. If tube alone is shipped, in addition to the inside, the outside should have padding to prevent breakage. However, the problem with a round tube is that it can roll off a conveyor belt in shipping. Never underestimate the skills and creativity of a shipper breaking contents in a package. Recently an optician shipped a 25" Newtonian Pyrex mirror for reflective coating application. The mirror weighed close to 100 lbs. and was well packed in a wooden crate and was insured for a value of $5K which had been sold to a third party who awaited the shipment after coating. The shipper was suspicious of contents, opened the crate and removed the packing without replacing the packing. The mirror was subsequently broken in shipping as it shifted around inside the crate. Gil
