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Rifles, Reloading, Optics, Equipment
Reloading
Somehow I'm going way too fast with not enough powder?
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<blockquote data-quote="Grumulkin" data-source="post: 1226828" data-attributes="member: 29281"><p>The bore could be a little larger than usual but if accuracy/precision is excellent as he says, I woudn't call it over sized.</p><p></p><p>By the way, I started reloading close to 50 years ago and have NEVER used a chronograph as a criteria of pressure. Once I've worked up a load, I get the chronograph out to get the numbers to calculate trajectories at extended ranges. I also have never damaged a gun.</p><p></p><p>There was a gunsmith who, as I recall, did velocity on 10 "identical" rifles shooting "identical" loads. There was as much as a 200 fps velocity difference between the rifles.</p><p></p><p>The rifle in question is a Blaser R 8. As such, there will not be a bolt "lift" as it's a straight pull design. Also, even at higher pressures, there probably won't be sticky extraction so primers and case heads are the things to watch. Primers are normally flattened but if there is still a little curved radius at the periphery of the primers, the pressure isn't excessive.</p><p></p><p><img src="http://www.orchardphoto.com/i27uu-203.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>It's not unheard of for Blaser to have chambers a little out of spec. I call the above cartridge a 300 Weatherby BI (Blaser Improved). You notice at the shoulder there isn't the double radius making the case volume a little bigger. I have no complaints though as the rifle is very accurate.</p></blockquote><p></p>
[QUOTE="Grumulkin, post: 1226828, member: 29281"] The bore could be a little larger than usual but if accuracy/precision is excellent as he says, I woudn't call it over sized. By the way, I started reloading close to 50 years ago and have NEVER used a chronograph as a criteria of pressure. Once I've worked up a load, I get the chronograph out to get the numbers to calculate trajectories at extended ranges. I also have never damaged a gun. There was a gunsmith who, as I recall, did velocity on 10 "identical" rifles shooting "identical" loads. There was as much as a 200 fps velocity difference between the rifles. The rifle in question is a Blaser R 8. As such, there will not be a bolt "lift" as it's a straight pull design. Also, even at higher pressures, there probably won't be sticky extraction so primers and case heads are the things to watch. Primers are normally flattened but if there is still a little curved radius at the periphery of the primers, the pressure isn't excessive. [IMG]http://www.orchardphoto.com/i27uu-203.jpg[/IMG] It's not unheard of for Blaser to have chambers a little out of spec. I call the above cartridge a 300 Weatherby BI (Blaser Improved). You notice at the shoulder there isn't the double radius making the case volume a little bigger. I have no complaints though as the rifle is very accurate. [/QUOTE]
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Reloading
Somehow I'm going way too fast with not enough powder?
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