338Rules,
One of the things I point out in the article is that CIP (European) pressures for the .284 are considerably more "spirited" than SAAMI's.
The probable reason for the SAAMI maximum average pressure (MAP) is the .284 was originally designed for the Winchester Model 88 lever-action, and the Model 100 semiauto--which I also point out, and that Europe has a distinct lack of 88s and 100s.
I also discuss "long-throating," and bullets seated out further. The advantages of each are vastly exaggerated--and I also explain why in the article.
