There's nothing wrong with using the proper powder with the proper charge, no matter how low it is. My point is don't go below that, as I have seen the results.Did you read Speers data I posted?
As for your assumptions, of the 10's to 100's of thousands of reduced loads I, my old gun club members and so many others have loaded with proper powders, we have never experienced such an event. A handgun blowing up from a reduced load is more than likely from a projectile becoming unknowingly stuck in the barrel and a second round fired causing the overpressure event.
As for the flash of the primer causing a "properly used" handgun propellant to burn too fast, I have never seen nor studied anything that ever supported this. I think you are possibly confusing slow burning powders for heavy loads vs faster ones in reduced loads?
That looks like a good economical plinking load.Below is a 45 Colt loaded with a Speer .454" 141gr ball with 4gr of WW 231. Out of my 5 1/2" Blackhawk, it avg 550fps or so using a thinned amount of Lee Tumble Lube. Great for short range pests, target and small game, and in my 1984 Marlin, I use the Unique load for a little more speed.
Below the 45 Colt is a 45LC vs 44 Sp for comparison. The 44sp is a .433" 120gr ball loaded with 3gr of WW 231 for about 500fps from my 4 inch target model and slightly more from the longer barrels. All are great short range, low recoil and noise loads that do well on small game and other.
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