Maybe this will help. The CCI primer energy chart.

As far as the original thread again H110 in the 357 mag lists a small pistol Mag primer.

If you jump to rifle then a Large rifle has more energy than a Small pistol Magnum does. That's why they are do not indicate a Mag Rifle Primer. As I said above a small rifle primer will work in the 30 carbine. The comparison between any pistol primer and a rifle primer is no relevant. Even though a small pistol Magnum has more energy than a small rifle (CCI) the rifle primers are stronger cups.

There is no arguing about Winchester Large Pistol. They are labeled for Magnum use,

In all pistols Hodgdon the powder company, calls for a Mag primer with H110. If you do not want to use one, then of course you do not have to.

It's not my opinion it is fact. So do as you wish.

If you wish to load based on "having good luck" and based on that's the way you do it, fine.

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Still Running Against the Wind