50 Beowulf- Anyone want to take a guess?

[Ridge Runner]

The 458 socom is 30-06/308 casehead size but I'll scan what I have and email it to ya
JS

[Ridge Runner]

email on the way! well ya may be in luck, 3 of the loads for the 458 w/300 gr. bullets fill the case over 90%
JS

Oh BTW, near as I can tell the 458 is the same case as the beowulf except necked to 45 cal and bigger rim. The parent case is the 50 AE stretched from 1.3 to 1.7"