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Primers can definitely affect accuracy. Just as different powders have burn rates that vary so do the primers. Powders can react differently under a host of different influences such as outside temperature and changes in powder volume. Different primers have their own nuances as well such as the initial exsplosive force we refer to as hotter vs. colder and also their capability to be uniform in their combustion output. This is why you see primers labled with terms such as magnum, benchrest, match and sometimes standard. I too wish it were more simple but have to admit I enjoy the game of pursuing the elusive "perfect round" for any particular firearm. Makes me have to go shooting more often and gives you that gratifaction when it all comes together. I own no match grade firearms,,, just get them to shoot that way.
10 Spot
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