Hi and Lo
It could be that you will find that some manufacturers will put quite powerful loads in hulls that have "high brass". But they don't have to. The point is that "low brass" hulls are just as strong. Anything to the contrary is just marketing or ignorance.
Back in the days when shot shells were loaded with black powder, there was a real differentiation based on the strength of the shell and the height of the interior base wads. No longer.
"Only hunting and mountain climbing are sports. The rest are just games." - R.Ruark
NRA Life Member