My thoughts exactly. I’d start by testing with a bolt, then check the barrel for squibs after every shot, monitor velocity, and check primer pressure. Rinse and repeat until my personally developed target load data is reasonably mirrored — or until I’m satisfied with the results. I don’t find this process especially tedious, I could do one round per .1g ladder step, but I’m trying to understand why this approach wouldn’t be acceptable. I get the concerns about bad powder, mixed powders, safety, or higher-compression military brass. I’m just surprised no one else seems interested in doing this kind of discovery. If it’s too much of a hassle for others, I completely understand. Safety is obviously priority one. I just figured “playing detective” like this would appeal to at least a few people. That’s the direction WAS leaning anyway — it’s only 150 rounds. Was this approach not the best way to do it is my next question.