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Rifles, Reloading, Optics, Equipment
Reloading
Seekins PH2 6.5 PRC Load Development & Accuracy Testing
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<blockquote data-quote="mferrell" data-source="post: 2010886" data-attributes="member: 115682"><p>Finally have time to make some more updates to my load development journey for the Seekins 6.5 PRC. Below are groups and comments from my last couple of visits to the range. </p><p></p><p>This turned out to be some good data collections due to the wide temperature swings between each range visit. The first day I shot in the morning and it was 63 degrees and very next day I shot in the afternoon and it was 88 degrees.</p><p></p><p>To note though, between range visits I did clean the gun. Over the past few range visits I was seeing the first round out of a cold, fouled, bore stray from the rest of the group. It would produces groups of less than 1/2" after the first shot, but when you add in the first shot it would increase the group size into the .8's. I had approximately 70 rounds through the gun since I broke the barrel in so I thought It might need one more scrub with copper solvent. The patches indicated though there was no copper in the barrel. Before I proceeded to test loads again I fired a couple fouling shots though it. </p><p></p><p>Temperature observations:</p><p></p><p>57gr R-26 w/ 156 berger @63 degrees = 2939 FPS</p><p>57gr R-26 w/ 156 berger @88 degrees = 2975 & 2973 FPS over two different groups fired</p><p></p><p></p><p>57gr R-26 w/ 156 Berger @63 Degrees</p><p>Velocity: 2939 SD: 4.7 ES: 11</p><p>The first shot in this group was low right - I liked the numbers I was getting so I decided to load this up again and test it again to see if the first shot was a "flier"</p><p>[ATTACH=full]222438[/ATTACH]</p><p></p><p>57gr R-26 w/ 156 Berger @88 Degrees</p><p>Velocity: 2973 SD: 2.9 ES: 4</p><p>This group is at 200 yards</p><p>[ATTACH=full]222442[/ATTACH]</p><p></p><p>57gr R-26 w/ 156 Berger @88 Degrees</p><p>Velocity: 2975 SD:12.2 ES: 30</p><p>This group is at 954 yards with gusting wind</p><p>[ATTACH=full]222443[/ATTACH]</p><p></p><p>57.5gr R-26 w/ 156 Berger @88 Degrees</p><p>Velocity: 2989 SD: 8.2 ES: 17</p><p>This group is at 100 yards</p><p>[ATTACH=full]222445[/ATTACH]</p><p></p><p>57gr R-26 w/ 140 Berger @88 Degrees (reshoot)</p><p>Velocity: 3042 SD: 14 ES: 32</p><p>This group is at 100 yards</p><p>[ATTACH=full]222446[/ATTACH]</p><p></p><p>57.5gr R-26 w/ 140 Berger @63 Degrees </p><p>Velocity: 3002 SD: 6.8 ES: 17</p><p>This group is at 100 yards</p><p>[ATTACH=full]222448[/ATTACH]</p><p></p><p>This concludes my initial testing with the 140 and 156 bergers with R26 powder. I have a few more loaded rounds of each to shoot that I am hoping to test out on some white tail coming up in the next couple weeks. Once I have shot all of the new cases I plan to reshoot some of the better loads above and see if they improve. I also plan to do some testing with H1000 if I can find some.</p></blockquote><p></p>
[QUOTE="mferrell, post: 2010886, member: 115682"] Finally have time to make some more updates to my load development journey for the Seekins 6.5 PRC. Below are groups and comments from my last couple of visits to the range. This turned out to be some good data collections due to the wide temperature swings between each range visit. The first day I shot in the morning and it was 63 degrees and very next day I shot in the afternoon and it was 88 degrees. To note though, between range visits I did clean the gun. Over the past few range visits I was seeing the first round out of a cold, fouled, bore stray from the rest of the group. It would produces groups of less than 1/2" after the first shot, but when you add in the first shot it would increase the group size into the .8's. I had approximately 70 rounds through the gun since I broke the barrel in so I thought It might need one more scrub with copper solvent. The patches indicated though there was no copper in the barrel. Before I proceeded to test loads again I fired a couple fouling shots though it. Temperature observations: 57gr R-26 w/ 156 berger @63 degrees = 2939 FPS 57gr R-26 w/ 156 berger @88 degrees = 2975 & 2973 FPS over two different groups fired 57gr R-26 w/ 156 Berger @63 Degrees Velocity: 2939 SD: 4.7 ES: 11 The first shot in this group was low right - I liked the numbers I was getting so I decided to load this up again and test it again to see if the first shot was a "flier" [ATTACH type="full"]222438[/ATTACH] 57gr R-26 w/ 156 Berger @88 Degrees Velocity: 2973 SD: 2.9 ES: 4 This group is at 200 yards [ATTACH type="full"]222442[/ATTACH] 57gr R-26 w/ 156 Berger @88 Degrees Velocity: 2975 SD:12.2 ES: 30 This group is at 954 yards with gusting wind [ATTACH type="full"]222443[/ATTACH] 57.5gr R-26 w/ 156 Berger @88 Degrees Velocity: 2989 SD: 8.2 ES: 17 This group is at 100 yards [ATTACH type="full"]222445[/ATTACH] 57gr R-26 w/ 140 Berger @88 Degrees (reshoot) Velocity: 3042 SD: 14 ES: 32 This group is at 100 yards [ATTACH type="full"]222446[/ATTACH] 57.5gr R-26 w/ 140 Berger @63 Degrees Velocity: 3002 SD: 6.8 ES: 17 This group is at 100 yards [ATTACH type="full"]222448[/ATTACH] This concludes my initial testing with the 140 and 156 bergers with R26 powder. I have a few more loaded rounds of each to shoot that I am hoping to test out on some white tail coming up in the next couple weeks. Once I have shot all of the new cases I plan to reshoot some of the better loads above and see if they improve. I also plan to do some testing with H1000 if I can find some. [/QUOTE]
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Seekins PH2 6.5 PRC Load Development & Accuracy Testing
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