Not that long ago BR primers were only about 10 dollar premium. Now that 50 percent of the adult population has a rifle and everything is about accuracy the price has gone up.
I am no expert on this but some things that I consider when looking for accuracy with regards to primers. Powders respond differently to amount of energy provided by a primer. Consistency is critical as well as the amount of energy a primer provides to ignite the powder. In long range shooting this is amplified. Temperatures add another dimension...what works when it is hot may not work so well when it is cold. Volume of powder needs appropriate primer to burn the powder evenly.
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