Originally Posted by
Pygmy
the 8 x 57, which was developed around 1888 and was the parent case head for the 7 x 57, the 30-06 and many other cartridges that are still in use today...
Actually the 7 x 57 pre - dates the "modern" 8 x 57 by 6 years for the .318 diameter ball cartridge, and by 13 years for the .323 ball cartridge (the new improved round).
The 8 X 57, as you said, was introduced in 1888, but the 7 x 57 was introduced in 1892, though many believe it was 1893.
BUT, as for the original intention of this thread ... 280 is a great round, and will put down anything on the North American continent, though there may be better choices for the big and toothy stuff carnivorous.