Originally Posted by
super_hunt54
That alignment tool made specifically for Barnes MZ bullets is not like the spin jag. It's name is very misleading actually. It is solely designed to fit the olgive and nose contour of that specific bullet. It does NOT have a bore alignment ring that is 50 caliber specific like the spin jag does. It's simply a fitted end loader for a specific bullet. That in itself MAY allow for better alignment but not as well as a spin jag with a bore fitting ring to keep the jag straight would be.
Barnes Alignment head:
Spin Jag:
Notice the alignment ring on the Spinjag?
Wrong. I've owned both of those jags. They both fit the bore tight. The Spinjag is cut smaller in the front is to keep the jag from pinching sabots. The Barnes doesn't have that, but the whole jag is the same size.
Your assumption is the Barnes is the same size as the cut away part of the Spinjag. It's not. It's the same size as the larger part of the Spinjag.
They both fit the bore tight. If anything the Barnes might fit tighter.