Winchester, before Hodgdons took over marketing of Winchester powders recommended using magnum primers with spherical powders (ball powders).
Hodgdons allows the use of standard primers in their data.
Considering the .30WCF is likely to be used in near if not actual Arctic conditions, magnum primers certainly seem reasonable.
My most recent load is 36.0gr of RL15 under a Nosler 150gr Ballistic SilverTip. (From Lee #2).
Gets 2,370fps from my Marlin/Glenfield Model 30 (20” 3/4 magazine).
Also, Sierra 125gr FNHP over 36.0gr RL15, or Speer 130gr FNSpt over 37.5gr of RL15.
(The 125 Sierra seats much deeper than the 130 and is compressed at 36.0)
All above are VERY accurate.
My older brother used a Hornady 150gr RN over 33.0gr of H4895 (2,250fps) to take a 230lb 10pt in Dec 2007. Largest deer anyone in family has ever killed. Lung shot it on the run! I’d positioned him to wait for a shot and I did a foot drive to run any deer out of a pine thicket. Worked! Pass thru heart lung shot.
He hunted Florida to Alaska while in Airforce with a .30/30. Rough M94 Winchester I gave him a Williams SourDough to put on it. He passed in ‘12. I still have the rifle...