
9mm +p load work up
I just finished binge-watching Johnny’s Reloading Bench on YouTube where he worked up a 9mm +P load, and he brought up Unique. Honestly, it surprised me. I’ve always viewed Unique as a relatively fast-burning, classic powder for standard target plinking, and never really considered it a top contender for pushing serious velocity in a small case.
Curiosity got the best of me, so I plugged some numbers into GRT and QuickLOAD. To my surprise, both simulators show that hitting my target goal of 1200 FPS with a 124gr projectile is completely doable while safely staying under the 38,500 PSI max pressure limit for +P.
Obviously, case capacity is going to be tight, and it’ll probably be a dirty burner, but the math checks out. Has anyone actually run this specific work-up in the real world? How closely did your real-world chronograph numbers match the GRT/QuickLOAD predictions? I will say that I am very interested in working up this load since it can fill up a case very nicely without worrying about a double charge.