Winchester makes a duel purpose primer that is labeled on the box " for use with large rifle and magnum rifle". This is like two primers in one. I haven't tried them yet because I haven't had to, but we sell them at the shop. Makes me wonder about the whole primer issue.
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Last edited by hunter Joe; 03-17-2010 at 06:05 PM.
To understand the difference between magnum and std primers and how they work, you first need to understand how different propellents work. Powders like bullseye and red dot are true exolosives and are designed to spontainiously combust where as stick powders like H4831 and IMR 4350 produce gas almost one stick at a time in a chain reaction. To help ignite the large charges in slower burning powders magnum primers are designed to dispurse multiple ignition sources through the flash hole to excelerate the ignition of the large charges of the slower burning in an effort to change the powder into gas prior to the projectile leaving the barrel.
There, it didnt take long to tell everything I know about the deal,but I hope this helps.
I did a little comparing last night with the speer book and the chart on the hodgen site, not much differance on loads, and one is using mag primers and the other just large rifle,with SOME of the same powders, i have no doubt that the mags may be hotter, they were designed for a purpose or need that was there but wasnt it just for the big magnums to start, such as the weatherby's that use nearly 10 grains more of powder?