rooster Posted July 9, 2011 Report Share Posted July 9, 2011 I have a load consisting of Prvi brass, 43g RL15, 155g Amax and CCI BR2 primers, shoots cloverleafs at 100, but shoots about a 5" group at 200? Same rifle shoots moa groups at 200 with cheap MEN surplus. Its a .308 howa with a 18" barrel, why the difference?? cheers Link to comment Share on other sites More sharing options...
kent Posted July 9, 2011 Report Share Posted July 9, 2011 I have a load consisting of Prvi brass, 43g RL15, 155g Amax and CCI BR2 primers, shoots cloverleafs at 100, but shoots about a 5" group at 200? Same rifle shoots moa groups at 200 with cheap MEN surplus. Its a .308 howa with a 18" barrel, why the difference?? cheers Because a lot of loads shoot great at 100! Very over rated distance to test any load IMO and proves nothing about the load. After seeing top Bench rest competitors throwing charges without weighing that were visibly different in the cases and then shooting bug holes at 100 it just proved it to be an exersize in futility developing loads over such a range Link to comment Share on other sites More sharing options...
ejg223 Posted July 10, 2011 Report Share Posted July 10, 2011 What speed are they traveling at? According to the Speer manual 13 you are 2 grains below minimum. Maybe put a bit more coal on the fire. Or try a tested standard load such as 44gr N140 or 44gr Varget under the 155 A-max. edi Link to comment Share on other sites More sharing options...
rooster Posted July 10, 2011 Author Report Share Posted July 10, 2011 Have not chronoed them, 43 grains is 2 grains below the minimum? Is that right Edi? I have been working from the One book, one calibre guides cheers Link to comment Share on other sites More sharing options...
ejg223 Posted July 11, 2011 Report Share Posted July 11, 2011 The speer manual (#13) for 150gr/308win/RE15 has 45gr as a starting load with 2683 fps and max load 49gr at 2919fps. The 165gr loads for RE15 are 43gr min and 47gr max. edi Link to comment Share on other sites More sharing options...
c18rch Posted July 11, 2011 Report Share Posted July 11, 2011 From my experience privi brass is rubbish! I've never used it myself but I've heard and seen nothing but bad results from it from other people at the range that have used it. Try weighing the brass and you'll pribably find large variations in brass weight which is probably what is causing the variations. At 100yds velocity variations caused by the brass variations will hardy be noticeable but as you start to increase the range they will be more noticeable. Rich Link to comment Share on other sites More sharing options...
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