CCI 200 vs CCI BR-2 primers?

[joneb]

I'm loading for a Ruger American ranch 7.62x39 which I have had good results with a Nosler 123 gr VG I'm using CCI 200 primers in either Lapua or Win. brass. A load that I like is 27 gr of Accurate 1680 which averages 2,400 fps, I would like to try the CCI BR-2 instead of the CCI 200. Should I start with the same charge?
My understanding is that the CCI BR-2 is milder than the CCI 200.

 

[ArchAngelCD]

According to CCI the BR-2 primers are the ballistic equivalent of the CCI-200 primers so they are interchangeable. Of course as with all component changes you should drop back slightly and work back up.

 

[joneb]

According to CCI the BR-2 primers are the ballistic equivalent of the CCI-200 primers so they are interchangeable. Of course as with all component changes you should drop back slightly and work back up.

Thanks, and I know that. the load with the CCI 200 shows no signs of over pressure and I have gone past 27 gr 1680 with the CCI 200, but I found the sweet spot at 27 gr.
I found this of interest, http://www.targetshooter.co.uk/?p=1471

 

[larueminati]

I'm in a similar scenario, I worked up my load with BR2's but i'm running low and can't get them locally. I looked earlier in the week and indeed the 200's are the same recipe as the BR's just "not as consistent". I'll be using the 200's for load development and the BR's for my hunting loads.

 

[Slamfire]

The primer cake composition is identical, between standard and Bench rest, given that there is variation in primer cake simply due to the percentages of constituents and the variability of mixing the stuff. The Bench rest stuff is supposed to be a more consistent primer, CCI claimed the things are individually weighed. From what I have read, the cup on the BR-2's are thinner at the base. This would increase the potential for a pierced primer. I have shooting buds who use the BR-2's in their match rifles, the primer is an excellent primer but an expensive one. If you can see a difference on target between a Bench rest primer and their standard primer, you are one good shot.