Still gathering parts to complete my 12 ga double. (I pretty much need only a pair of cocks/hammers now. If/when it ever gets shootable I have questions. One is, can loads be packed in tight enough to shoot one barrel then shoot the second without retamping the load to make sure it hasn't loosened? Seems like a waste to have a second barrel if it has to be done each time. Might as well just have a single smooth bore?