Ok. Thanks for the links.

So... now is where my research is thin & I still need to fill in some blanks on the timeline but one of my upcoming chores will be finding use of a magnetospeed (or labradar?) & sorting through various match ammo to see which groups best & has the desired minimum ES & then recording all the data (still trying to sort if there's a standard for this or just comes to personal preference, respectively).

Anyone want to help me out & add to this or ?

If there's already a thread to this subject with more info lmk because I must have missed it. Thanks.