I a 416 Remington and 458 Winchester in MarkX Mauser actions, the 458 Winchester feed the copper 380 grain bullets without fail and it has a larger meplat than the CEB
John Barnesness has stated that with ball powders like CFE223, Power Pro Varmint just to name a couple, that a magnum primer produces more consistent results.
I loaded some 130 grain TTSX for my 30/06 in Winchester cases, Federal 215 primers and 58 grains of CFE223. I shoot them in a day or so, anyone tried this combo?
Loaded some 458 Win mag in Norma cases. Federal 215 primer 80 grains of AA2230 with the LeHigh 380 grain flat point
Played with different overall length
Federal 215 primer Remington or Winchester cases as the ones I have hold the same amount of powder and 65 grains of Power Pro Varmint.
64 grains does 2911 FPS
Before the Speer data, there was no load data for Power Pro Varmint, CFE223 or 2000MR. These powders safely increased the velocity above all other powders
I'm sure you have no issues with standard primers. I had read that magnum primers with those powders gave better shot to shot consistency. I haven't compared to see for myself
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