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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Tired of small groups at 100 yards check this out!
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<blockquote data-quote="4mesh063" data-source="post: 30266" data-attributes="member: 941"><p>4 Mesh .063 is a designation for a type of wire cloth product (hardware cloth). 4 meshes per lineal inch (16 openings / Sq in) and a wire diameter of .063 (.0625= 1/16", .063 is the industry standard size for 16 gauge)</p><p></p><p>Brent, No I usually use from 5 to 10 to work up loads. Generally, I'll shoot 7 or more. In the past, that's been dictated by the number of brass left over after having an uneven number come out with VERY expensive brass. For large groups, I use my match brass that historically, gets over 50 firings.</p><p></p><p>As an example, The other day I had my nephew who's just back from Iraq shoot a test for me out of my bench gun. I had him shoot at 2 different aiming spots on the same sheet of paper at 425 yds (just happens to be the distance I have handy). On paper. Now, he took an eterninty between shots so I didn't get what I'm gonna call a real set of test results. 7 shots were sent at aiming point 1. 10 at aiming point 2. This simulates real match conditions because I've many times shot 7 sighters or less. Some times more. Up to 13 I've shot in a match. Anyhow, He shot for a period of perhaps 15 minutes or more to complete the 17 rounds so as I said, this isn't a fair test. Group 1 (7 shots) measure 2.895 and Group 2 (10 shots) measure 3.270. Subtract the .308 from each and you get 2.587 and 2.962. Overlaying the 2 groups, I get 4.010 so thats a 3.702. </p><p></p><p>If I had shot that group and hadn't taken the kind of time that he did, I'd be cutting the barrel off and throwing it away. Given the elapsed time, I'm gonna say I'm happy with the results. Quite honestly, a gun that groups just under 4" at 425 is positively guaranteed to be dead last at Williamsport. </p><p></p><p>If I had a camera, I'd post a pic, not that anyone cares. This is though a good example of how a pretty decent gun opens up through time. Yes, I've had 3 and even 5 shot groups from this gun go under .3 at 425 but then I CONTINUED the string and reality set in. Then I found out just how much I have to fix. </p><p></p><p>I watched these groups form and the only problem I saw was time. He just shot too **** slow because of being unfamiliar with bench shooting. I also had him being careful not to drop my brass in the driveway so hey, life goes on. I would have really liked to have seen what it would have done and I can only guess. Maybe it would have been no better, ???. Now it's getting cold here and I wont get to shoot the thing at 1K for a while. I don't think that the best groups come in cold conditions anyhow, so time will tell. That's good news for Ric because if he's happy now, He'll probably really be happy in July-Sept.</p><p></p><p>Brent, as for load development, 3 shots definitely won't tell you what to shoot. It may though, tell you what not to. I don't really do much load development so it's hard for me to tell.</p></blockquote><p></p>
[QUOTE="4mesh063, post: 30266, member: 941"] 4 Mesh .063 is a designation for a type of wire cloth product (hardware cloth). 4 meshes per lineal inch (16 openings / Sq in) and a wire diameter of .063 (.0625= 1/16", .063 is the industry standard size for 16 gauge) Brent, No I usually use from 5 to 10 to work up loads. Generally, I'll shoot 7 or more. In the past, that's been dictated by the number of brass left over after having an uneven number come out with VERY expensive brass. For large groups, I use my match brass that historically, gets over 50 firings. As an example, The other day I had my nephew who's just back from Iraq shoot a test for me out of my bench gun. I had him shoot at 2 different aiming spots on the same sheet of paper at 425 yds (just happens to be the distance I have handy). On paper. Now, he took an eterninty between shots so I didn't get what I'm gonna call a real set of test results. 7 shots were sent at aiming point 1. 10 at aiming point 2. This simulates real match conditions because I've many times shot 7 sighters or less. Some times more. Up to 13 I've shot in a match. Anyhow, He shot for a period of perhaps 15 minutes or more to complete the 17 rounds so as I said, this isn't a fair test. Group 1 (7 shots) measure 2.895 and Group 2 (10 shots) measure 3.270. Subtract the .308 from each and you get 2.587 and 2.962. Overlaying the 2 groups, I get 4.010 so thats a 3.702. If I had shot that group and hadn't taken the kind of time that he did, I'd be cutting the barrel off and throwing it away. Given the elapsed time, I'm gonna say I'm happy with the results. Quite honestly, a gun that groups just under 4" at 425 is positively guaranteed to be dead last at Williamsport. If I had a camera, I'd post a pic, not that anyone cares. This is though a good example of how a pretty decent gun opens up through time. Yes, I've had 3 and even 5 shot groups from this gun go under .3 at 425 but then I CONTINUED the string and reality set in. Then I found out just how much I have to fix. I watched these groups form and the only problem I saw was time. He just shot too **** slow because of being unfamiliar with bench shooting. I also had him being careful not to drop my brass in the driveway so hey, life goes on. I would have really liked to have seen what it would have done and I can only guess. Maybe it would have been no better, ???. Now it's getting cold here and I wont get to shoot the thing at 1K for a while. I don't think that the best groups come in cold conditions anyhow, so time will tell. That's good news for Ric because if he's happy now, He'll probably really be happy in July-Sept. Brent, as for load development, 3 shots definitely won't tell you what to shoot. It may though, tell you what not to. I don't really do much load development so it's hard for me to tell. [/QUOTE]
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