Originally Posted by trueblue
Barnes doesn't list any data in their new reloading manual for H4831Sc. and the 100gr TSX. They list data for IMR4831. Could the load data for the IMR4831 be used for the H4831SC? Their burn rates are somewhat similar. I have some H4831SC on hand.
Do not substitute any load data from one powder for another even if burn rates are close. You can call Barnes, and by now, I would bet they have data for the 100 grain bullet.
However, when you are in a crunch like this, you can also always reference the Hodgdon website or Stevespages.com
For that bullet weight, stevespages recommends starting at 47.0 grains of H4831 and topping out at 58.0 grains. I would also take a look at the Swift manual. Before Barnes came out with much of their data when the TSX came out, and now the TTSX, they would tell callers to reference the Swift manual since that was the only other pure copper jacket bullet maker, with a load manual, that they were aware of.
I have the Swift manual and for the 25-06, 100 grain Aframe, the charges begin at 52.1 and top out at 56.0 using H4831.
What I would do is start at about 49.0 grains. Load 3 rounds with that charge. Put 2 in your fridge so they'll be about 40 degrees. Shoot the 2 cold ones first. If no problem, shoot the one that is your current temp. If you still have no problems, that will be a good starting point for you. Call Barnes to confirm.