can1010,
I don't have any "reasoning" that is a candidate to be useless or otherwise. I was merely responding to a post on the first page of this thread that stated:
"270Win is a great cartridge, but, nonetheless, bumping up speed by 200fps is a significant gain.
And, if you put a long heavy bullet in a 270Win SAAMI-spec chamber, your gonna lose some powder capacity. Maybe this is what the author was referring to when he said a 270Win just ain't ever gonna get you there?"
I simply responded with the fact that putting a long heavy bullet into the .270 Win case will actually result in the loss of less powder capacity than putting the same bullet into the 270 WSM. There is no reasoning involved, just measurement, and I have no dog in the fight. Just wanted to point out that there is a fallacy in that basic premise.
My statement has nothing to do with the basic capacity of the cases - of course the big ones are bigger, and faster - I was just pointing out the 270 Win loses less to stuffing in a long bullet. That's all.
All the best,
Rex