I recently purchased a 9mm S&W 669 and now I have to reload for it and I don't have the experience with this round. Anyway use what you have,right? I have Unique powder and some 160gr RN from a Magma mold. I loaded up some 160's sized to .357 which is what I use in any 9mm. The bullet measures .746 for length and the OAL is 1.147 which leaves .401 This results in a compressed load with 3.1 gr of Unique powder.
Thoughts on the safety of this load. No, I'm not going to purchase another mold so please don't go there.
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