...
Generally though, for anyone thinking of upgrading their travel case, I wouldn't over think it! Use the simplest, most practical, toughest case you can find. The STANDARD for years has been the Pelican. The Pelican is NOT the most expensive either! But it is without a doubt the case against which all others are compared. Now I notice the SKB iSeries looks to be similar if not a clone of the Pelican. Never had an SKB iSeries but would look and compare side by side to Pelican if you are bound and determined to use something other than Pelican. For the Pelican, choose the full thickness option for the Pelican foam. Take a sharp knife and cut out the appropriate outline in the bottom foam to about half the depth of the equipment (gun, etc.) to be secured, leaving full thickness in the lid for a slightly compressed and secure fit.