Which Primer Do We All Like?

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  • lwminton
    Warrior
    • Nov 2014
    • 143

    Which Primer Do We All Like?

    I have always used CCI BR-4 primers in my 6mm AR (primarily because Robert Whitley recommends them). Now I have a 6.5 Grendel but do not see much mention of the BR-4. Is there a "best" primer for the larger caliber? Is cost an issue? Does the choice depend on bullet weight? Thanks in advance for any advice.
  • bwaites
    Moderator
    • Mar 2011
    • 4445

    #2
    Most load development was done using CCI 450 primers, lots of us use Wolf SRM primers as well.

    Comment

    • pds
      Warrior
      • Dec 2012
      • 128

      #3
      1st choice is Wolf SRM. 2nd choice CCI 450. 3rd would be Rem 7 1/2.

      pds

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      • lrgrendel
        Warrior
        • Jul 2013
        • 662

        #4
        AA2520 CCI 450 (This is all I shoot for now)
        VARGET FED 205m ( very accurate but slow )

        About to start load development with CFE. Will be interested to see what people use.

        Comment

        • ricsmall
          Warrior
          • Sep 2014
          • 987

          #5
          BR-4, 450's, 400's, federal gm, Tula. I bought 10k of the Tula when primers were in short supply. The only load I've used em in was less than satisfactory, but that was only one load. Still have a pile to try out. ����

          Edit: the load I tried the Tulas in was a proven load with BR-4's, and might could be developed with the Tulas to b accurate.
          Last edited by ricsmall; 04-21-2015, 01:57 AM.
          Member since 2011, data lost in last hack attack

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          • wraith1516
            Warrior
            • Dec 2014
            • 316

            #6
            Cci #41 with lapua cases, 8208xbr &Barnes 100gr ttsx

            Comment

            • montana
              Chieftain
              • Jun 2011
              • 3209

              #7
              Wolf SRM

              Comment

              • CastorTroy
                Warrior
                • Mar 2015
                • 133

                #8
                cci 41

                Comment

                • BIPMaster
                  Bloodstained
                  • Sep 2014
                  • 37

                  #9
                  Cci #450

                  Comment

                  • wraith1516
                    Warrior
                    • Dec 2014
                    • 316

                    #10
                    Which one is hotter cci #41 or #450

                    Comment

                    • CastorTroy
                      Warrior
                      • Mar 2015
                      • 133

                      #11
                      41 and 450 are essentially the same; 41 has a thicker cup to help prevent slamfires in rifles with floating firing pins

                      Comment

                      • lwminton
                        Warrior
                        • Nov 2014
                        • 143

                        #12
                        Originally posted by CastorTroy View Post
                        41 and 450 are essentially the same; 41 has a thicker cup to help prevent slamfires in rifles with floating firing pins
                        Thank you for your reasons. I understand the thick cup concept.
                        I expected to hear more about cost or power or consistency, but it sounds like these factors don't seem to matter much.
                        Have there ever been side by side tests -all else equal but primer?

                        Comment

                        • Savage Shooter
                          Warrior
                          • Dec 2014
                          • 241

                          #13
                          Any particular reason why no 205 or 205M or Remington 7 1/2s? Nosler Manual lists the Remington 71/2 for their Grendel loads and Hogdon has the 205M. Is shot an OCW test with the 123Amax and CFE223 changing only the primers (71/2, 205 and BR-4) and I have not done all the group and velocity analysis, but none stood out as particularly better than the other. Maybe once I really dig down and analyze the results, I'll see a trend.
                          My "6.5" = 24" AA Overwatch upper 1/9 twist, NC based US Tactical lower, standard A4 6 position stock, AR Gold Trigger, JPS SCS buffer, Vortex 6-24 x 50 FFP PST with EBR-2C MOA reticle

                          Comment

                          • sneaky one
                            Chieftain
                            • Mar 2011
                            • 3077

                            #14
                            I use only CCI 450's. I have wolf primers, just haven't tried them. The BR-4 have just a hint thicker cup than 450's- too spendy though.

                            I tried a handful- accuracy was same as 450's.

                            Sav Shooter- google primer thicknesses- there are lots of sites to analyze all the primer specs.

                            Comment

                            • 65Whelen
                              Warrior
                              • Sep 2014
                              • 671

                              #15
                              I used some Rem 7 1/2s, worked fine, but my go to is the CCi-450

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