About 2 years ago I used a then-current batch of H4831SC, 61.5g of it with a 150g SST. It was so compressed it pushed the bullet out a little overnight.
Compared to many manuals I thought the velocity was very mild. 2990fps from the 23.5" bbl.
When I mention manuals, I mean that I don't remember ever seeing a 61+g load of that powder with a 150g bullet.
I worked up to the load gradually of course. Lighter powder charges had been very underwhelming.
