Actually
@Milan and Bruce, the stock on my ZG 47 is almost perfect for me, after getting a gunsmith to remove that weird butt-plate and shorten the stock so that with a Pachmayr pad the length of pull was 6-8mm shorter than original. I determined that to be correct because I knew that it was slightly too long for me and after trial-shouldering the rifle in multiple positions with that horrible butt-plate removed, the length-of-pull was correct for me.
The drop at comb, drop at heel and the pitch are perfect for me. The imperfect part is the pistol grip, which could be a tiny bit fatter to fit my hand better.
If I ever have a custom stock built for a hunting rifle, it will be pretty much identical to my ZG 47 stock, but with slightly fatter pistol grip and 1 to 1-1/2 degrees of castoff BUT it will not have an ornamental schnabel!
I find that a 90 degree pitch sends a hunting rifle skyward and bashes the top of my shoulder. It either fits or it does not!
WE are all different but to say the “American Classic” stock design is THE BEST is slightly dishonest. It can be useful but in 35 years of shooting (including 14 years running a Range complex) I have rarely encountered a shooter for whom it is the universal answer (mostly shorter, stockier shooters who avoid cartridges with more than 50 grains of smokeless propellant in the case).
The principal reason for general introduction of that style appears to have economic, i.e. less timber, cheaper injection moulding dies, smaller fibreglass moulds and fewer angles to compute, build and check.