Bullet Disintegration

[SeabeeKen]

Recently vaporized some varmint grenades in my 244AI. Barnes said the speed limit is 328,500 RPM and I had them at 333,000 RPM

 

[Robert Weidler]

I shoot Sierra 90 g MK in my 224 Valkyrie Improved with a 26 in 6.5 twist ay 2950 fps. Calculated rpm is 326,769. Never had a blow up. Also shoots near to under 1/4 moa at 200 yards

 

[jfjohn77]

This is where all this becomes confusing and contradictive. I have an article published on loaddata.com dated Sep 13 2022, that gives his recorded load data with velocities from a 1:7 twist bbl using 5 different bullets and 9 different loads per bullet. I used a Bullet Spin Rate Calculator for fastest velocity of each bullet and found the rates between 332229 rpm for the 90 gr Berger and 371931 for the 69 gr RMR. Now he published group sizes for each load, so the bullets obviously made it to the target, and now I'm left scratching my head.

.22 Creedmoor Loads Using Peterson Cartridge Small Rifle Primer Brass | Load Data Article​

The .22 Creedmoor is nothing more than the 6.5mm or 6mm Creedmoor necked down to accept .224 bullets without any further changes (necks may require turning or reaming to ensure proper chamber fit/bullet release). The trim-to length is 1.91 inches, like the 6mm Creedmoor. The .22 Creedmoor makes...
loaddata.com

Bullet Spin Rate Calculator - Calculator Academy​

Bullet Spin Rate Calculator Basic Calculator Advanced Calculator Enter any 2 values to calculate the missing variable Muzzle Velocity (fps) Barrel Twist
calculator.academy

 

[JSH]

May be able to answer questions on 22CM and 69 RMR in 3-4 weeks. Going on a Safari again.
My buddy just built one. Will bring my magneto speed.

 

[mikecr]

332229 rpm for the 90 gr Berger

Which 90gr bullet?
I would not think the hunting VLD would survive.
Hard to imagine that even the target VLD would be reliable there.
Is there another