Hopdoc,

I'm in the "bigger bullet camp." Still, a 416, whether a 416 Rigby or a 416/500 will have more penetration with similar solids than a 450/400 due to greater energy. But penetration of the 450/400 may be enough, and history says it is, that the greater penetration of the 416 is immaterial.

Being a fan of the "bigger bullet," if I was going to deal with the weight and/or recoil of the 416 than I would rather have a 450NE.

Pressure is an issue with double rifles but way too much is made of it. Proper lubrication is more important than high vs low pressure cartidge, imo.

JPK