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<blockquote data-quote="addie52" data-source="post: 255270" data-attributes="member: 12594"><p>Well just got back from the range and some load testing with my new rifle. This was the first load test session with my rifle. I broke in the barrel earlier with some factory loads. I tested 168gr vlds with retumbo powder and think I have found the bullet and powder I am going to use. I got two good groups at both ends of the spectrum. The first was my second group which was a .416 with 71.5 grs and av 3057. The best group was my last at .355 with 74 grs and av 3207 and still with no high pressure signs. It was 40 deg out and 4714 ft elevation. I think it interesting to see how much a half of a grian changes things I went from 71-74 grs in half grain increments 4 of the seven strings were under .75 with the other three being well over a inch. the velocity also never got any higher until the last string which went from 73.0 gr av 3063 to the 74 gr at 3207.I also found it interesting that my best grp had the highest standar deviation of 21 while all the others were around 12-13. I think now I'm goin to take the two best grps and shoot them at 200-300 and also shoot another gr higher just to see what happens. Hopefully after the next session I'll have a load nailed down. Thanks agian for all the help I've gotten from this site and its members.</p><p> </p><p>adam</p></blockquote><p></p>
[QUOTE="addie52, post: 255270, member: 12594"] Well just got back from the range and some load testing with my new rifle. This was the first load test session with my rifle. I broke in the barrel earlier with some factory loads. I tested 168gr vlds with retumbo powder and think I have found the bullet and powder I am going to use. I got two good groups at both ends of the spectrum. The first was my second group which was a .416 with 71.5 grs and av 3057. The best group was my last at .355 with 74 grs and av 3207 and still with no high pressure signs. It was 40 deg out and 4714 ft elevation. I think it interesting to see how much a half of a grian changes things I went from 71-74 grs in half grain increments 4 of the seven strings were under .75 with the other three being well over a inch. the velocity also never got any higher until the last string which went from 73.0 gr av 3063 to the 74 gr at 3207.I also found it interesting that my best grp had the highest standar deviation of 21 while all the others were around 12-13. I think now I'm goin to take the two best grps and shoot them at 200-300 and also shoot another gr higher just to see what happens. Hopefully after the next session I'll have a load nailed down. Thanks agian for all the help I've gotten from this site and its members. adam [/QUOTE]
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