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I am going to do some test loads with my 6br with 75 gr and 87 gr vmax for shooting prairie dogs. The two primers I have in hand are CCI 450 and BR4. What primer do you all prefer in your BR between the two? Thanks in advance!

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I usually shot the BR4 primers but as long as they were all the same I didn't have any problem and still don't.

I'm not shooting matches any more and I'm just using mine for varmints so I'm using the one I have the most of..


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Thanks for the reply. I have 1000 br4s on hand that I don’t use in anything. I will likely dedicate then to the br if it likes them and save the 450s for my 17 Rem.

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Either one.

I generally use 450's or Rem. 7.5s. The "old school" Lapua cases and 30grs. ARComp and the 87 V-MAX.

Gradous built Stiller, 1-8 Brux. One-holer all day long; you can mix n match the BR4, 450 and Remington, it doesn't care, they'll still go in the same hole.

I'm not much of a 243 guy but that BR flat out shoots that load and wasn't even built for it.



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BR4 = CCI 450 with more QC = CCI 41. He 41 has a bit more clearance between cup and anvil and is a fully qualified primer for DOD. All three have the same primer mixture with the same charge weight.

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Just yesterday at a Scheels store the 450 was 90 dollars a thousand while the br4 were 140 per thousand. I’ve used both with good results. Edk

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In my 6BR days

Used Rem 7.5's.......Benchmark or H4895


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I use the BR4 in all rifle cartridges using small primers except .223 for the AR and .30 Carbine for my M1. Both will work just fine.


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I used Federal 205Ms back in the day.


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Originally Posted by ratsmacker
I used Federal 205Ms back in the day.

THIS & i still do


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IC-B B4

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Only 1 way to know for sure. Shoot both and see!


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I also use the Remington primers with the same results as the Br4. Edk

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Shelton573: If you can find any please try the wonderful Federal 205M Match primers.
My full custom 6m/m Remington Benchrest is shooting extremely well with these, when shooting Nosler 55 grain Ballistic Tips and Euber 68 grainers.
Best of luck with your "6 BR"!
Hold into the wind
VarmintGuy


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