Thread: Hornady sub-x 175gr load data...

This is where I started with TB which was in the same month as when I started reloading.

https://hodgdonpowderco.com/wp-conte...ads-2018-2.pdf

Note the instructions rather than the data, basically stating anywhere between full non compressed case capacity and 70% of same is where you want to be.
So by my logic, if you want to try a given powder weight that deviates from the single given weight (as opposed to min/max) then these instructions give you the min/max that you can play with.

While I am reluctant to table the following as a definitive, it is a possibility that the data given is the max data (generally with TB one works down rather than up) so is therefore the starting load. The greater case capacity being afforded by the shorter projectile. This may explain the apparent anomaly.