I read Sgt Yorks diary.
while I never found anything definitive (and of course others have done the same) it was interesting that he made mention of having to give up his 1903 for "that British rifle".
As the 1917 was a derivate of the Pattern 14, and commonly called an Enfield (pretty justified) it would seem he at least had that rifle for a time.
Obvious he could have switched out again though that was never mentioned.
Also a V notch would have been his choice but also keep in mind that the V notch on the Springfield was a battle sight and very much a guess where you would hit with a range from zero to 500 some yards.
On the other hand, one quick flip up and the 1917 is a pure 100 yd. peep and even the battle sight range is shorter.
So while a case can be made for either one, as a pure marksman rifle, the Model of 1917 takes the cake and if i had the choice and I was the shot York was, i would have taken the 1917.
I well could be wrong.