I have a SIG P210 target that I want to develop an accuracy load for bullseye. My gun prefers 115 gr factory ammo. I have several powders available so I am looking for recommendations on which powder to start testing with. I am an experienced reloader and all loads will be verified with current...
Has anyone noticed the 9mm load data in the sierra manual #6 changed drastically from the previous manual.
For 9mm 115 gr using Unique the max is shown as 5.4 grains in #6 and it was 6.6 in #5. The classic 115 gr unique load is 6 grains so I am surprised that they now say that is over max.
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