I am not a firm believer, either way, which came first. Nor do I care. I mainly wanted to point out that, while the two rounds are very similar, they are not the same round, not entirely interchangeable, and that one is BRITISH and the other GERMAN. I stand by my original statement regarding the 500 Jeff as being the largest Classic British round you can safely fit in a standard 98. I've read of the 505 Gibbs being shoehorned into a standard 98. That is a very, very bad idea.