I'm using Promo in my CZ75 with a 147 RN, 3.3 grains. While I'm sure there are better loads I'm sitting on just over 24 pounds of this. So today I decided to try some in my S&W MP9 Compact. Using the Hornady XP 115 gr. I loaded 5 rounds with 4 grains, then 5 rounds with 4.3 grains, followed by 5 rounds with 4.4 grains & finally 10 rounds with 4.5 grains. I used HMF primers & OAL of 1.15". The top load proved fine from what I could tell with only 10 rounds to test.

No chance of a double charge as 4.5 grains pretty well fills the case.
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This shows the first 15 fired cases with the last 10 waiting to be fired.
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I used the last 5 rounds [4.5 grain load] on paper at 7 yards offhand. The bottom hole was the aim point.
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