Magnum primer vs. Standard???

Although I have been reloading for 40 years...what PSI difference is seen on above primers? How hot is Rem. 91/2 M primer? Thanks in advance, D.
Here's what I have gathered in the past ...
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(Source: Lyman 49th reloading manual).
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(Source: Unknown)
 
I like the standard Winchester large rifle primer, kinda like a happy medium. I use them in everything from 30-06 to 7mm RUM.
With primers hard to locate, I was considering Hornaday Superperformance & Rem.91/2M in 6
5 Creedmoor. Somehow I found several hundred of those primers on my bench. Safety first! Large Rifle hard to find here in Erie, PA!
 
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