Mar 7, 2010 #1 H Hammer Single-Sixer Joined Oct 1, 2006 Messages 231 . Can the 416 Ruger cartridge be opened up to 458 and still have sufficient headspace control ? .
Mar 7, 2010 #2 M mattsbox99 Hunter Joined Jan 12, 2009 Messages 3,391 Location Montana 'Merica Yep, its already been done. Its a .534" body so there is plenty to work with.
