Weatherby Mark V 9 lug is arguably the strongest factory made action. The Magnum Mark V bolt is the heaviest available in a commercial rifle. The lugs allow for a 54 degree bolt lift. The Mark V also gives you a much larger and higher pressure range. Breech pressures have been tested from 65,000 to 100,000 psi with no bulging of bolt, action or barrel. These reasons and many more is why I build off of Weatherby's Mark V 9 lug. I do have several rifles sporting the Remington 700, but it's just no match to the Mark V 9 Lug.