Usually my deal with trying mag primers is anything with 70+ grains in them. However even with that I have gotten stellar results using standard primers with some powders.
Your loading with Hunter, and I use that in my .270, but I also use Ramshot Magnum in my 25-06 AI which has a touch over 60 grains per load. Either of those two, I use the CCI-BR2 primers, and have had no issues what so ever with ignition. With the 25 I have tried several different primers including mag of two different brands when I was doing load work ups. What I found was that they were more inconsistant at the ranges I was working with and I scrapped them. The load lit with the BR2 would produce lower variations as well as groups at or usually under 2" at 350yds. With the others I couldn't even keep them inside a 4" circle.
Like was mentioned every rifle is different, but I have never found a need for anything other than a standard primer in a standard 25-06 and I have loaded a TON of them as well.
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LAter,
Mike / TX
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