What I have noticed in reviewing the alloy used by commercial casters selling coated bullets is that they all use the same 2 / 6/ 92 for a BHN of 16-17. I figure they need this alloy to limit rejects from commercial casting machines. And that a softer 2/3/95 would have more rejects , and while they size their bullets to .356 & .452
which should form a gas seal in the barrel lead / throat, the lack of a lube and an alloy that won't allow the base of the bullet to flatten or fill out into the barrels groves hurts their accuracy in pistols that operate in the high 20's to low 30 K PSI
Is my thinking flawed ?? Or since the MAX range for auto loaders is 50 Yds. and the harder alloy produces acceptable accuracy ??