I have a Lebel rifle without the N marking. Can the Privi Partizan ammo be used? I have 2 types of 8mm ammo. I see there is about .008 difference in the size of the necks. One type being Kynoch and the other is 1948 dated surplus. The Kynoch being smaller in diameter. I understand the chamber modification, but before I spend 25.00 for a box I thought I would ask. TIA.