CCI BR2's and 7mm RM

[IH8120]

Just curious if I can use the CCI BR2 in my 7mm RM. Currently using the CCI 250 (lg rifle magnum). Would the BR2 give me better accuracy. Thx.

 

[Jamie]

I ram 215M in mine great primers dont know if the br2 is hot enough

 

[dpopl8r]

This past summer I loaded up my pet load for my 7mm Rem mag and mistakingly used 210M (standard rifle, but not BR2) primers, instead of my typical 215M primers. What I found during average 15C to 20C weather was that velocity dropped around 30 fps, but surprisingly the SD and ES dropped to single digits. I was stunned. The bad news; during a shooting session between 0C to -7C, velocity dropped well over 100 fps, throwing all my ballistics out of wack. Conclusion: Stick with the hotter magnum primers, especially if shooting in colder weather.

 

[IH8120]

Cool thx.