Difference in primers? [Archive] - Glock Talk

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themighty9mm
10-22-2011, 13:10
Whats the difference between cci 400 small rifle and cci 450 small rifle primer? I think its my speer manual that shows both on loads for 223.

Zombie Steve
10-22-2011, 13:40
450 is a magnum primer. Little hotter.

themighty9mm
10-22-2011, 13:47
Thanks,
Yea I ended up answering my own question. Looked up cci's charts, diddnt know they had one. Wonder why the manual would use magnum primers and non magnum interchangably.

Zombie Steve
10-22-2011, 13:50
I don't have the Speer manual in front of me, but my guess is they don't use them interchangeably. Some slower powders, ball powders work better with a magnum primer.