First: I am known here as kuduae. Lancaster is a German too, but a different person.
Further: I never doubted Signore Rigido is a very capable engineer when it comes to military equipment. I am not aware of Krauss-Maffai or OTO Melara ever producing any hunting arms. Instead, they are known makers of tanks and artillery. Some of the guns shown on signore Rigido's website seem to be offspins of work done for the defense industry. Being a capable engineer for such companies is not an advantage when it comes to sporting guns. Engineers being the decision makers in larger gunmaking companies often leads to problems, see the contraptions offered by Blaser f.i. An engineer by his education and training thinks in terms of straight lines, flat surfaces, defined angles and curves. As I learned the hard way during my own gunmaking efforts, an elegant sporting arm is more often featuring irregular curves and lines that are beyond the calculating abilities of any engineer. Sculpting a gunstock is more an art than a science. Differences of merely a millimeter here or there can make or break a design.
I am fully aware that Signore Rigido has reinforced the stock of this .500 Jeffery against recoil as two crossbolts are visible in the photos and there may be another recoil lug hidden inside the foreend. As the stock receives a more or less straight load on firing, it will not break or split from use on a range. This is not my point, but the fancy figured wood in the pistol grip area. When I studied forestry science at the university many years ago I had to learn some things about wood. Almost all woods, walnut included, has only a fraction, less than 10%, of strength across the grain than with the fibers. Anyone who once splitted fire wood knows this. As there is pretty fancy or wild figure in the weak pistol grip area / the small of this stock, wood fibers running in all directions inside, the buttstock is likely to break clear off when subjected to a sideways or up-down load or shock. Such stresses quite often happen in big game hunting due to a fall or stumbling. I have seen enough guns with fancy wood damaged this way .

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German foresters: We love sustainability! For merely 300 years by 2013.