Kanstul .500 pipe vs 6H pipe

[gregwaits]

Of the Kanstul leadpipes for .500 bore, which is the closest in spec to that of the Elkhart 6H?

Anyone? I’m guessing the H6 (.403) or the W6 (.414)

[Fidbone]

I had the S pipe when I had my Minick, it worked better than the original Minick pipe.