After reading your post, I'll digress on the 50 BMG 30-06 connection... You have informed me about something I was not aware of...Thank you...

However, I'll still maintain that the relationship between the 50 BMG and the 30-06 are no closer than the relationship between the 30-06 and 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...

As far as pulling rank on me , I was well past diapers when the .280 was introduced in 1957, and I wouldn't be surprised if I am closer to your Dad's age than your age... I am a big fan of Jack O'Connor myself, and I remember reading his monthly articles in Outdoor Life, rather than Reader's Digest...