oldrookie
There are currently three different sized black (45/50 cal) sabots.. The HPH-12, the thickest, HPH-24, mid range, and the HPH-3p-EZ, which is the thinnest...
This is from the
www.mmpsabots.com
The big difference between Black HPH12 and HPH24 is HPH24 is .002" smaller
in loaded diameter. Loaded diameter is a sabot with a bullet inserted.
With a .452 diameter bullet the HPH12 is .507-.508" diameter, the HPH24 is .505"-.506" diameter.
If you have a tight loading rifle you may want to choose the HPH24
or if you have a very tight rifle, consider our 3Petal-EZ.