Trying to figure out a new load. 123 SST and AR-comp

[A5BLASTER]

Just My 2cents, follow the details of the load data and work up in charge weight. Compressed loads should have that warning if in a loading Manuel. Load data off the internet may or may not. If your compressing a powder load it should be a warning sign and you may want to select a different powder.

Nothing wrong are unsafe about a compressed load. Just have too watch it closely.

OP. What did your ladder look like? What's the chrongraph telling you?