JW;
I have yet to load any JHP bullets of ANY kind..........
I know some data calls for 1.09 and a little more but then they have their nose cut off, so I can see why the shorter oal.

Hodgdon and VV have a slight difference 1.142"......... but many do not use the same bullet !! XTP, Sierra, GDots..........

You need the total length of a bullet to help with the oal and no one list the length of the bullet except maybe Nosler.
The plunk test and the minimum oal are nice to know but some times not going to happen with some data.

Maybe Jhp later, right now just target loads.