Just got back home.
Let’s do this again. The Money bullet is 1.460 long and weighs 498 gr.
The Brooks postell is 1.430 long and weighs 496 gr.
The postell has deeper GG than it needs, a lot deeper than the MB therefore it lost a lot of weight do to the deeper GG.
The postell has a lot more mass in the shank and the short bore riding portion ahead of the first driving band and the ogive is a lot shorter than the MB. This makes the postell more stable with the slower ROT than the longer ogive the money bullet has.
You watched me shoot the 1K at Alliance using the postell bullet shot with the .44-90 bn and you busted that 1K iron after I did so you know that bullet is a good one for the 1/19
Now think about this.
I have swaged .493 x 1-7/8" long bullets for the .50 that has a 1/22 ROT and those bullets will bang the 1K iron at Alliance more than it will miss. That bullet has the Creedmoor type ogive.
Now all of the rot to length formulas say it will not work