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codybrown Super Member
Joined: Feb 10, 2007 Posts: 379 Location: Michigan
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fnuser Super Member
Joined: Dec 23, 2008 Posts: 914 Location: S.W. Missouri, U.S.A.
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Posted: Mon Dec 29, 2008 7:09 pm Post subject: Re: What's the diff. between CCI #400 and #450 |
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primers are rated by brescence, I don't think I spelled that right. but in layman terms it is the amount of spark and the penetration of that spark into powders coating [usually graphite] in smokeless powders a magnum primer compared to a regular primer whether it be large or small, pistol or rifle will boost pressure significantly because it lights more powder initially while the volume of the combustion chamber is relatively small. as opposed to the size it is after the bullet is a little farther down the tube.
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fnuser Super Member
Joined: Dec 23, 2008 Posts: 914 Location: S.W. Missouri, U.S.A.
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Posted: Mon Dec 29, 2008 7:15 pm Post subject: Re: What's the diff. between CCI #400 and #450 |
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if you interchange them drop your powder charge 2g.'s. and work back up especially if you load close to max. some powders suggest use of a magnum primer because they're harder to light. alot of ball powders do suggest this in reloading manuals they say you can get a hang-fire I've NEVER encountered this but have heard it quoted enough to think it might. I usually get better accuracy from reg primers.
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codybrown Super Member
Joined: Feb 10, 2007 Posts: 379 Location: Michigan
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Posted: Mon Dec 29, 2008 7:15 pm Post subject: Re: What's the diff. between CCI #400 and #450 |
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AH that makes sense. I never thought of the giant spark igniting 9gr of powder in a tiny case versus a smaller small rifle primer. This is regarding to loading for a 22 hornet, so I'm probably correct in assuming that I should stick with a small primer!! Thank You.
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fnuser Super Member
Joined: Dec 23, 2008 Posts: 914 Location: S.W. Missouri, U.S.A.
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Posted: Mon Dec 29, 2008 7:33 pm Post subject: Re: What's the diff. between CCI #400 and #450 |
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I go down to a small pistol in a .218 bee w 13.3 g.'s of aa 1680 and 35g v-maxs drop that to 12 and it would make a nice 22 hornet load in a ruger #1 or other sturdy 22 hornet
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Vince Site Admin
Joined: May 25, 2005 Posts: 15715 Location: Brisbane AUSTRALIA
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Posted: Mon Dec 29, 2008 10:32 pm Post subject: Re: What's the diff. between CCI #400 and #450 |
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fnuser wrote: |
primers are rated by brescence, I don't think I spelled that right. but in layman terms it is the amount of spark and the penetration of that spark into powders coating [usually graphite] in smokeless powders a magnum primer compared to a regular primer whether it be large or small, pistol or rifle will boost pressure significantly because it lights more powder initially while the volume of the combustion chamber is relatively small. as opposed to the size it is after the bullet is a little farther down the tube. |
Sage advice FNUser. Whilst it is possible to use a Magnum Primer in place of a Standard Primer, it is pretty much mandatory to reduce your load by 1.5 - 2 grains and work the load up again watching for signs of pressure.
Cheers, Vince
_________________ Cheers, Vince
Illegitimi non carborundum
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Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God.
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codybrown Super Member
Joined: Feb 10, 2007 Posts: 379 Location: Michigan
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Posted: Tue Dec 30, 2008 5:18 pm Post subject: Re: What's the diff. between CCI #400 and #450 |
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So should I use small pistol primers or small rifle primers then?
_________________ I make mistakes like the next man. In fact, rather cleverer than most men, my mistakes tend to be correspondingly larger. |
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Vince Site Admin
Joined: May 25, 2005 Posts: 15715 Location: Brisbane AUSTRALIA
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Pumpkinslinger Super Member
Joined: Sep 22, 2007 Posts: 5002 Location: NC foothills
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Posted: Tue Dec 30, 2008 7:44 pm Post subject: Re: What's the diff. between CCI #400 and #450 |
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I use rifle primers in my Hornet for what its worth. I figure they'll handle the pressure better.
_________________ Mike
"I ain't no better than anybody else, and there ain't nobody better than me!" Ma Kettle |
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codybrown Super Member
Joined: Feb 10, 2007 Posts: 379 Location: Michigan
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Posted: Tue Dec 30, 2008 9:32 pm Post subject: Re: What's the diff. between CCI #400 and #450 |
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I guess I'll go back to browsing around trying to find someone who's got a case or 2 of them in stock.......hard to do!!
_________________ I make mistakes like the next man. In fact, rather cleverer than most men, my mistakes tend to be correspondingly larger. |
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