You must think you question in post #33 is something special. I have no idea why you either can't or choose not to answer this question yourself. Perhaps a little less typing and more reading would be a better approach to figuring it out. You know the 1 mouth 2 ears thing??? You should be looking up "Burkett Timing Drill"
That's just it the whole conversation started around you stating the a load with unburnt powder/inconsistent load means nothing to accuracy because my ransom rest told me so.
You stated:
"
From my understanding competitors look for consistently accurate ammunition. Consistent velocity for a given load is less of a concern if the ammo shoots well." If you don't compete in anything with pistols/revolvers then why are you telling others what does or doesn't affect accuracy??? Some times 1st hand knowledge is best, you might consider trying things out for yourself.
Dwell time & grip pressure:
The burkett timing drill is designed to aid in finding the correct grip pressure for the shooter/firearm/load. Along with teaching the shooter to create what's known as a accuracy cadence with that firearm/ammo combo. Kind of hard to correct "tipping" or vertical stringing when your ammo doesn't feel consistent.
Myself, I've spent a lot of time using/shooting 357mags over the decades. Not only in revolvers I shoot a lot of 357mag ammo in a contender. I use the contender as a training tool for not only a consistent grip pressure, the duration that consistent grip pressure needs to be. Or what's known as follow thru.
Follow thru of a shot/there's another new term for you to look up.
My contender chambered in 357mag setup as a training tool for targets @ 50yds. The idea is to hit a 2" (actually 50mm) 10-ring.
At the end of the day a shooter uses grip pressure to hold the firearm so that the independent act of pulling the trigger doesn't affect accuracy. The shooter uses that same grip pressure to keep the firearm on target/to the poa. How long the shooter holds that grip pressure is affected by the dwell time of the bullet creating what known as follow thru. How strong or weak a load is mandates how much grip the individual shooter has to use keep the firearm on target.
Huge difference between the raw accuracy of a load and the usable accuracy of that same load. Here's 13 targets that have test loads that will hold the 10-ring on an nra target @ 25yds. They were shot with 7 different bullets and 5 different powders. Some powders/loads burned clean, other not so much with unburnt powder and soot on the case mouths.
In the ransom rest world they are all equal, that raw accuracy thing. For a shooters standpoint, I'd only use 2 of those 13 test loads for competition. The rest are for shooting dirt clods @ 20 paces.