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I have some experience with Unique, seem to recall it being very dirty. I have been using 231 for some time now but want to start getting some higher velocities out on my Gold Dot 185JHP. (200-205 PF)I have been told a slow powder is needed to reach this goal safely. But which one? Any on the listed a favorite? Please step forward.
 

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The highest velocity I can find for a jacketed 185 is 1149 fps, achieved with 8.1/N340, according to the Lee manual. Starting load is 7.3.

Vihta Vouri shows 1135 fps with 8.0 grains as maximum with the Speer TMJ 185.
 

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Be verry careful when loading the Gold Dot. It does not take the charges a conventional JHP does. I do have a Speer manual at the house and will send you what they say. The 185's may be more forgiving, but the 230 grain is decidedly not. Acts more like a soft lead slug to me. Once I got the powder charge adjusted correctly for mine, it is the equal of the XTP which is my all time accuracy champ.
 

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FWIW, 1.275" sounds mighty long for that bullet. Closer to 1.200" I would imagine. (I'm not sure about the 185, but the 230GDHP is 1.200" in the latest Speer manual.)
 
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