My current conclusion is that the E.C. Crossman titled "The New Ross" and published in the Outers magazine in 1912 is referring to the 1907 Scotch Deerstalker and not the M-10. Many people associate the M-10 with the year 1910, but it actually didn't come out until late 1911 or early 1912. So, it would seem Crossman was initially referring to the M1905-E Sporter in his admonitions of the earlier Ross and when he states, "Now comes the new Ross" he is referring to the M1907 SDS. Given the published date of 1912, it wouldn't seem that he would be referring to a rifle introduced five years earlier. I suppose news traveled slower back then. Anyway, this formulation would make it more plausible that Wundhammer was involved in the design of the stock of the M-10 Sporter. And the catalog information I quoted suggests that the M-10 was designed with the incorporation of American tastes and stockmaker input (presumably Wundhammer). What I don't find evidence of yet is the existence of two versions of the M-10. The "turned down bolt" version of 1912 would essentially be first year production. This version seems to have no differences in the stocking than the non-turned down bolt version. I think the best explanation is there was no turned down bolt "variation" at all. We know one other Ross rifle came with the turned down bolt - the .280 Military Match rifle. Sir Charles had tremendous hope for the military application of this rifle and I'll bet he never planned that production would be miniscule. In fact, likely only 25 were produced (of which I know 21 were destroyed by Canadian Police). Anyway, they may well have made an excess of bolts for the the Military Match rifles that didn't get used. These bolts would work without modification in the M-10 and actually made for a pleasing appearance. Thoughts from others?
