I didn't know that CCI #41 were magnum primers. I was under the impression that they just had a harder cup to prevent bump fires with the free floating firing pin in AR 15's.
It does have a harder cup for the reason you gave, but the CCI #41 (and the large rifle equivalent, #34), are also magnum primers.
From the CCI page on #41 and #34
"Use the same data as CCI Magnum primers"