I don't know where your getting your data for your 7mm , but you must be dreaming cuz those numbers don't exist , so wake up and smell the gun powder
And as far as the 338, of course it can do that , it's in another category
My point exactly
Ok now you are just trolling.. someone sock puppet anyhow here are those number straight from hornady
https://www.hornady.com/bullets/rifle/7mm-.284-180-gr-eld-match