300 Norma Magnum 225 ELD Bullets

Bolt Gunner

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Apr 9, 2018
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0
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#1
Does anyone have experience with 300 Norma Magnum reloading.

I am getting Cratered Primers. The Rifle Manufacturer says minor Cratering of Primers is normal for this caliber. Any Info will be greatly appreciated. No hard lift of the bolt. No other pressure signs.

Here is the Load:

1) 300 Norma and Lapua Brass
2) CCI Magnum Rifle Primers
3) 225 Hornady ELD Bullets
4) 84-84.5 Grains of Retumbo
5) COAL is 3.612; approximately 25/1000 off the lands

The Velocity at 2925-2950 FPS.

The primers without Bullet / Powder. Lapua Brass.jpg Primer No Bullet or Powder.JPG
 
Feb 12, 2017
531
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Michigan
#5
Is your rifle an AI? I'm running basically the same load as you and had the same problem with my AXMC. After bushing and converting to the small dia. firing pin the issue was solved.

Todd
 
Apr 9, 2018
10
0
1
#6
Is your rifle an AI? I'm running basically the same load as you and had the same problem with my AXMC. After bushing and converting to the small dia. firing pin the issue was solved.

Todd
My Rifle is the AXMC 300 Norma Magnum also. Talked to AI yesterday. They say it is normal. Not sure yet. Have you done anything about it ? I am going to try the H1000 and lower loads today. I will keep you posted.