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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bore Capacity versus Barrel Life
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<blockquote data-quote="coyotezapper" data-source="post: 1153956" data-attributes="member: 20438"><p>These two were just examples of custom and factory bbls. I have other rifles that also go against this so called data but these are just the two I picked so that rules out the anomaly statement. The 6.5 referenced is not mine but a buddies. Mine has only a couple hundred rounds through it but they were both built by GAP with the same reamer and we use the same load data. The 1/2" MOA reference was on the large end as this rifle generally / still shoots sub 1/2" MOA. The STW was shot with a few different bullets through the years but AVERAGED .5" - .7" depending on the bullet. Barrel puked when groups opened to 1.25" with .250" throat wear. In some hunting scenarios this accuracy would still be acceptable so this is MY definition of a bbl being shot out. Oehler 43 used for pressures / velocities.</p><p> </p><p>I would like to see a large number of samples to prove the data on the charts. And to try and say poor accuracy is 1/2" MOA for 3 shots is a joke. What is your definition, 5 shots, 10 shots per group? Then there is the question as to how many groups define the accuracy?? How much time between shots?? There is a lot of variables to all of these questions. First and foremost the rifles mentioned are hunting rifles with relatively thin bbls in most cases not heavy bbl bench guns.</p><p> </p><p>Yes all bbls will slowly lose accuracy the more rounds that go down range but the graph says bbl LIFE meaning the bbl is done. But there again is losing 1/8" in group size meaning the bbl is done? Not in a hunting rifle.</p></blockquote><p></p>
[QUOTE="coyotezapper, post: 1153956, member: 20438"] These two were just examples of custom and factory bbls. I have other rifles that also go against this so called data but these are just the two I picked so that rules out the anomaly statement. The 6.5 referenced is not mine but a buddies. Mine has only a couple hundred rounds through it but they were both built by GAP with the same reamer and we use the same load data. The 1/2" MOA reference was on the large end as this rifle generally / still shoots sub 1/2" MOA. The STW was shot with a few different bullets through the years but AVERAGED .5" - .7" depending on the bullet. Barrel puked when groups opened to 1.25" with .250" throat wear. In some hunting scenarios this accuracy would still be acceptable so this is MY definition of a bbl being shot out. Oehler 43 used for pressures / velocities. I would like to see a large number of samples to prove the data on the charts. And to try and say poor accuracy is 1/2" MOA for 3 shots is a joke. What is your definition, 5 shots, 10 shots per group? Then there is the question as to how many groups define the accuracy?? How much time between shots?? There is a lot of variables to all of these questions. First and foremost the rifles mentioned are hunting rifles with relatively thin bbls in most cases not heavy bbl bench guns. Yes all bbls will slowly lose accuracy the more rounds that go down range but the graph says bbl LIFE meaning the bbl is done. But there again is losing 1/8" in group size meaning the bbl is done? Not in a hunting rifle. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bore Capacity versus Barrel Life
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