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Rifles, Reloading, Optics, Equipment
Equipment Discussions
.17 cal remington centerfire
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<blockquote data-quote="brianwinzor" data-source="post: 44294" data-attributes="member: 1067"><p>Since 1972, I have been using rifles chambered for a .17/222 magnum improved with 40 degree shoulder. This case has capacity of about 31.5 grains of water, which is similar to that of a .17/223 improved, and about 0.5 - 1.0 grains less than a .17 PPC. </p><p></p><p>During the last 3 years I have switched to using the 30 grain bullet, and found that this case will achieve 4100- 4175 fps with that bullet weight. This is similar to that being achieved by others using the .17/223 improved, and .17 PPC. The .17 BR seems to achieve about 75 to 100 fps more. </p><p></p><p>I also chronographed the Berger 37 grain VLD (BC.343) to find out what velocity could be achieved with this case. I achieved 3785 fps using a full case (30.0 grains) of WIN 785, however as expected the bullet keyholed into the target, as it requires a 1 in 7 twist barrel to stabilise it.</p><p></p><p>However, some are having problems getting the Berger 37 grain VLD to hold together and be accurate at velocities in excess of 3500 -3600 fps. About 3 years ago, Walt Berger in replying to my query on this issue, told me that he thought 3450 fps was the practical limit for the bullet. </p><p> </p><p>I believe that cases with a capacity of about 31 to 33 grains are the practical limit when using the 30 grain bullet.</p><p></p><p>A case such as the .17/225, would only be practical if suitable bullets in the 35 to 40 grain range could be sourced. Hope the above helps your choice. Good luck, Brian</p></blockquote><p></p>
[QUOTE="brianwinzor, post: 44294, member: 1067"] Since 1972, I have been using rifles chambered for a .17/222 magnum improved with 40 degree shoulder. This case has capacity of about 31.5 grains of water, which is similar to that of a .17/223 improved, and about 0.5 - 1.0 grains less than a .17 PPC. During the last 3 years I have switched to using the 30 grain bullet, and found that this case will achieve 4100- 4175 fps with that bullet weight. This is similar to that being achieved by others using the .17/223 improved, and .17 PPC. The .17 BR seems to achieve about 75 to 100 fps more. I also chronographed the Berger 37 grain VLD (BC.343) to find out what velocity could be achieved with this case. I achieved 3785 fps using a full case (30.0 grains) of WIN 785, however as expected the bullet keyholed into the target, as it requires a 1 in 7 twist barrel to stabilise it. However, some are having problems getting the Berger 37 grain VLD to hold together and be accurate at velocities in excess of 3500 -3600 fps. About 3 years ago, Walt Berger in replying to my query on this issue, told me that he thought 3450 fps was the practical limit for the bullet. I believe that cases with a capacity of about 31 to 33 grains are the practical limit when using the 30 grain bullet. A case such as the .17/225, would only be practical if suitable bullets in the 35 to 40 grain range could be sourced. Hope the above helps your choice. Good luck, Brian [/QUOTE]
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.17 cal remington centerfire
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