Standard or Magnum primers?
 

When loading the 300 Win Mag and the 300 Rem SAUM, should I use the magnum or standard primer? What are the advantages of using magnum and what are the cons of using standard?

RE: Standard or Magnum primers?
 

I would use the Magnum primers. The mag primers will give you a more consistant ignition when using large amounts of slow burning extruded powder in magnum cartridges.

Rem. 222

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RE: Standard or Magnum primers?
 

Thanks for the replies. Will changing to magnum primers increase speed, change point of impact or have any other effects?

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RE: Standard or Magnum primers?
 

You should always follow the directions of your loading manual.....I can't believe that there's a loading manual anywhere that recommends a standard rifle primer in a .300 Win Mag case!!!

RE: Standard or Magnum primers?
 

I was just looking at the Hodgons reloading manual #25 edition
every magnum 7mm through 460 weatherby (PRIMER SIZE) LARGE RIFLE
(quotes)Some powders need mag primers but doesn't say which ones.

RE: Standard or Magnum primers?
 

Hunter40, I have the Hodgdon's #26 manual......and it says "large rifle primer" for the .300 Mag and others as well!!!

From personal experience, there's little difference between Large rifle and magnum primers!!!