Primers labeled "match" are done so for two reasons.
One is the priming mixture is made by the best folks at the plant who mix the putty like slurry compound the most uniform and tests with those primers indicate they have the most uniform fire and heat ouitput.
The other is marketing hype that may well not end up being as good in actual performance as standard primers.
There are primers out there that are not labeled "match" but outperform those that are labeled as such.
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