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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ongoing Saga- 700 VTR in .308
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<blockquote data-quote="Mike6158" data-source="post: 333828" data-attributes="member: 1039"><p>Another day at the range and things went real well. I fine tuned windage at 200 yards and then moved to 300 yards to do a short load test. Technically I load tested at 200 too but I didn't measure the groups. Two of the three 2,700 fps loads were touching and the other was pretty close.</p><p></p><p>This time around I loaded RE-15 for the book value of 2,600 fps, 2,700 fps, and 2,600 fps. (3) rounds for each charge for 200 yards and (3) rounds for each charge at 300 yards. Using Loadbase and impact data I backed into about 2,650 fps for the 2,700 fps load. One of these days I'll chrony the load and see what it really is.</p><p></p><p>At 200 and 300 yards the 2,600 fps groups were not worth measuring when compared to the higher velocity groups.</p><p></p><p>Like last time, I waited for the barrel to cool between 3 shot groups.</p><p></p><p>3 shot group size (calculated from Loadbase)"</p><p></p><p>2,700 fps load at 300 yards: 1.36" (the same charge measured 1.35" yesterday). Note: #2 and #3 were touching. I would love to know how much of the difference between those and #1 were my fault.</p><p></p><p>2,800 fps load at 300 yards: 1.83" Note: #1 and #2 were about 1/2" spread. Like above, I would love to know how much of #3's difference was my fault.</p><p></p><p>OH! I did change one thing on the rifle before the test. The trigger pull supposedly comes set at 3#'s from the factory. It was more like 5#'s (or more) and it's about 3.5# now (I say about because I can't remember what it was when I checked it but I know it was between 3 and 4 pounds). </p><p></p><p>The ugly little triangle is turning into a shooter...</p></blockquote><p></p>
[QUOTE="Mike6158, post: 333828, member: 1039"] Another day at the range and things went real well. I fine tuned windage at 200 yards and then moved to 300 yards to do a short load test. Technically I load tested at 200 too but I didn't measure the groups. Two of the three 2,700 fps loads were touching and the other was pretty close. This time around I loaded RE-15 for the book value of 2,600 fps, 2,700 fps, and 2,600 fps. (3) rounds for each charge for 200 yards and (3) rounds for each charge at 300 yards. Using Loadbase and impact data I backed into about 2,650 fps for the 2,700 fps load. One of these days I'll chrony the load and see what it really is. At 200 and 300 yards the 2,600 fps groups were not worth measuring when compared to the higher velocity groups. Like last time, I waited for the barrel to cool between 3 shot groups. 3 shot group size (calculated from Loadbase)" 2,700 fps load at 300 yards: 1.36" (the same charge measured 1.35" yesterday). Note: #2 and #3 were touching. I would love to know how much of the difference between those and #1 were my fault. 2,800 fps load at 300 yards: 1.83" Note: #1 and #2 were about 1/2" spread. Like above, I would love to know how much of #3's difference was my fault. OH! I did change one thing on the rifle before the test. The trigger pull supposedly comes set at 3#'s from the factory. It was more like 5#'s (or more) and it's about 3.5# now (I say about because I can't remember what it was when I checked it but I know it was between 3 and 4 pounds). The ugly little triangle is turning into a shooter... [/QUOTE]
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Ongoing Saga- 700 VTR in .308
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