August 6, 2013, 07:39 PM | #1 |
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CCI 400 vs CCI#41
New to reloading .223 or 5.56
I bought a box of 1000 CCI 400 (small rifle) because I cannot find CCI#41 anywhere. I thought I could use the #400 in place of the #41. I am reloading for a M&P15T, 5.56 with a 1 in 8 twist. I would prefer to use the CCI#41, but I was curious if anyone uses CCI#400. As of right now, I have a box of Nosler 22 cal 55grain .224 Spitzer. That is all I am able to find at the moment. Any advice, would be greatly appreciated. Thank you Jay |
August 6, 2013, 08:00 PM | #2 |
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The CCI400 primers i have, seem to flow back into the hole around the firing pin sooner than Rem 7 1/2 primers, using a bolt action. I learned not to use the Rem 6 1/2 as they are only good to 40,000 psi. They (6 1/2) were a problem in my Colt auto. Never had a slam fire.
Last edited by 243winxb; August 6, 2013 at 08:16 PM. |
August 6, 2013, 08:01 PM | #3 |
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I've been using the CCI 400 when reloading Remington .223 55 gr FMJ-BT with IMR 4198 and they work great.
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August 7, 2013, 05:07 AM | #4 |
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CCI #400 is all I use for 223 in my AR, never had a problem.
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August 7, 2013, 08:31 AM | #5 |
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I also use the cci 400s for ar use, I also got a couple packs of 6.5 remington primers by mistake, used then for minimun loads for plinking, no issues but I wont do that again for the sake of piece of mind.
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August 7, 2013, 12:06 PM | #6 |
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I use the 400's also but prefer the 41's, no problems with either. The 41's are made to reduce the risk of a slam fire in AR rifles. The AR has a free floating firing pin, so if you pull out the first round that's gets loaded (unfired) you will notice an imprint of the firing pin on the primer. When your BCG slams forward, the firing pin will hit the primer! That's why it's so important to always point your muzzle towards the ground when loading the AR. An out of battery fired round may damage your rifle or just cause some headaches and money.
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August 7, 2013, 12:58 PM | #7 |
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400's are a standard Primer,41's are more down the line of a magnum primer. Do not use 400's in a hot load,They can not handle the charge and you will be cleaning pieces of primer out of your rifle ( this I know from personnel expirence). Cup thickness is different. Also as stated here 41's are to help with slamfires in Ar's.
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August 7, 2013, 04:32 PM | #8 |
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Actually, I read somewhere that I remember as credible, in the last week, that the differences between the CCI 41 and standard primers is the height of the anvil, the cup is the same.
In any event, I have run standard CCI primers in AR15 space gun back in the 90s, and it shot great, no slamfires at all. The one I used to run that gave me concern was the Federal 205M I think it was. If you single loaded for prone slowfire or standing, the firing pin would always dent the primer cup. Used to make me really nervous. |
August 7, 2013, 06:55 PM | #9 |
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According to the CCI website, the #41 primer uses the same data as the 450 (small rifle magnum).
I use either #41 or 450 primers, but I have used some 400 primers lately in 5.56 for target ammo.
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August 7, 2013, 07:43 PM | #10 |
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The Rem 7 1/2 and the CCI 41 are both magnum primers and will better ignite the hard to light ball powders.
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August 7, 2013, 08:38 PM | #11 |
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Actually, I read somewhere that I remember as credible, in the last week, that the differences between the CCI 41 and standard primers is the height of the anvil, the cup is the same.
Stubbycat--CCI-400- cup thickness- .020 CCI-41,CCIBR4 and CCI 450,s cup thickness .025
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August 8, 2013, 07:51 AM | #12 |
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Well there you have it! Thanks for clearing that up 4runnerman.
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August 8, 2013, 11:46 AM | #13 |
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Not a problem Stubbycat. I know this because behind the scene here I Have been in contact with Bart and Brian on this issue. In fact at this time,My Br is out of commission due to this issue. I have a new Bolt head on order. I have learned my lesson. This primer shortage has got to enddddddd.. Max Loads--Need heavy duty primers. Tried CCI-41's ( same as CCI-450's ). Accuracy dropped. No blown primers but the loss in accuracy was not worth it.
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