300 rum vs 300 prc which is better

MM, what are the case design elements you see as better? I took a look at case specs as I see both have about 0.305" neck, 30* neck, less body taper on PRC (0.017" vs 0.025"), both 0.534" case heads, the RUM is slightly rebated as body starts at 0.550". I am sincerely asking to learn and understand what you see as better. Appreciate the perspective đź‘Ť
The PRC case is based on the 375 Ruger, which is a design copied from the early works of Newton, he developed the .532":case without the belt in the early 20th century.
Hornady will tell you it's THEIR unique design….
I say the RUM is a better design because it is .550" wide and is more efficient than the PRC for grains in, velocity out.
If belts were causing inaccuracy, as Hornady says, then how did a cartridge with a .264" long neck, a belt and skinny powder column win several long range tournaments and come within 50fps of their beloved PRC? Know which one I'm referring too?

Cheers.
 
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