Raimey,
That is a consideration, but there were some rechamberings that didn't require the repair proof. Normalizing a 9.3x72R "D" version to "N" was one, normalizing an 8.15x46R in a similar manner was another. I think rechambering to 8x60 was another. I am not 100% sure, but I am sure it would not have been rebarreled only to change from 8x57I to 8x60. Don't forget, the whole purpose of the 8x60 was to allow this, also, times were as hard in 1930 Germany, as in the US( if not harder). Maybe you could ask Axel to settle it for us. Also even though I didn't base my opinion on it, the Treaty of Versailles over rode a lot of things.
Mike

Last edited by Der Ami; 09/23/18 05:32 PM.