CCI benchrest primers

Does anyone know the difference between the normal CCI SR and their BR4 primer? Is there a mixture difference? Hardness?


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Originally Posted by Kbeaton

Does anyone know the difference between the normal CCI SR and their BR4 primer? Is there a mixture difference? Hardness?


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The bench rest are supposed to be much more consistent in their design. Match grade primers essentially.

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Originally Posted by CodySPowell

The bench rest are supposed to be much more consistent in their design. Match grade primers essentially.

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I know they’re marketed as being “better” I was hoping someone had real data behind it.


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Originally Posted by Kbeaton

I know they’re marketed as being “better” I was hoping someone had real data behind it.


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From everyone I talked to about the BR4's there no noticeable difference between then and standard CCI 400's aside from price. Cup hardness is no different. The "mix" isn't different just more consistent.

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Originally Posted by CodySPowell

From everyone I talked to about the BR4's there no noticeable difference between then and standard CCI 400's aside from price. Cup hardness is no different. The "mix" isn't different just more consistent.

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Thanks for the replies. I might grab some and run them over a crono to see what happens.


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Originally Posted by Kbeaton

Thanks for the replies. I might grab some and run them over a crono to see what happens.


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I'll be doing the same as well. My local supplier was out of the CCI #41's and 400's so I snagged a box of BR4. Wes said he and his Dad had tested them all with very negligible differences. Let us know what you find out. [emoji106]

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Cody and Wes are right. Just a more consistent version of the #400. Most people can’t or won’t notice a difference. A benchrest shooter who is trying to eek out every last ounce of accuracy from his rig might. In the bench rest game .001” difference in your groups could be the difference between a win or a loss.


JTD

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Originally Posted by JeffreyDeGraff

Cody and Wes are right. Just a more consistent version of the #400. Most people can’t or won’t notice a difference. A benchrest shooter who is trying to eek out every last ounce of accuracy from his rig might. In the bench rest game .001” difference in your groups could be the difference between a win or a loss.


JTD

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[emoji106]

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Quite a few years ago I was given several thousand of the BR4 primers. I used them in my 223Rem loads without any difference at all between them and the CCI400's.
They chrono'ed with the same velocities and SD's. After I used them all up I simply went back to my 400's and finally went to all 450's. ---- SAWMAN

Guys that shoot Benchrest and other disciplines involving loads that are way off the map use BR4s and Rem 7.5BR for a reason. They are harder, thicker, more consistent. I have a load that shot very well, but pierced primers. Switch to 7.5BRs, problem solved. My old mentor did a lot of wildcatting, and BR shooting. He swore by BR primers.