Can anyone offer an opinion as to what percentage of total ballistic performance is driven by primer selection? For the purpose of discussion I shoot in the range of .223 to .375. Thanks all, in advance.

George

thats pretty wide span . There was a test a few years back on primers from this forum and i dont remember what the conclusion was.
I generally go with heat range winchester the hottest and cci federal then remington .
I use magnum primers when the temp is below 10* and in a case where there is a large volume of slow burn powder.
I have not seen any thing on a % of performance.

I heard someone say this once so I couldn't resist. I would say that the primer is a big percentage of the total ballistic performance. If you do not have a primer, the rifle is not likely to fire at all.

If you are talking perf., the only way to tell is try diff. orimers. The smaller cases like the .223 will probably show a preference of one brand or another. The .375 will probably not. In my vatious rifle rounds from .260AI to .404jeffery, I have found the bigger bore dia. show less effect.

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Originally posted by F4J:
Can anyone offer an opinion as to what percentage of total ballistic performance is driven by primer selection? For the purpose of discussion I shoot in the range of .223 to .375. Thanks all, in advance.

George

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I've seen an accuracy improvement switching from large to magnum in .270 with 150 grain projectiles.