constant diameter 12 strand end for end splice

[allene]

I should add that I don't want to compromise the mast design or change it to accommodate the splice and besides this 1/2 inch thick splice is really fatter than I want so I will be figuring out how to reduce the bulk one way or the other. I don't know how much until I hear from the builder but my initial goal was 7/16 so if that is OK, I will reduce to that. If not, 3/8 would be OK as well. Probably between these would be ideal. This will be a DIY project in any event.

But the point of my post was to see if anyone had gone all the way to constant diameter.