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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
115g VLD Berger for deer?
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<blockquote data-quote="Fiftydriver" data-source="post: 35304" data-attributes="member: 10"><p>Lynn,</p><p></p><p>Your comment about the 117 gr Sierra SPBT having a very high B.C. compared to the other 25 caliber bullets.</p><p></p><p>Sierra list the 117 gr SPBT having a B.C. of .410. I agree this is better then the other Sierra 25 caliber bullets but it is roughly the same as the 100 gr Ballsitic Tip that I have tested just shy of .400 out of my 25-06 loaded to 3450 fps.</p><p></p><p>The 115 gr Ballistic Tip has a much higher B.C. then the 117 gr Sierra and the 115 gr Berger is higher yet.</p><p></p><p>This is where the problem lies in my mind. Even though the 117 gr Sierra is a heavier bullet, it is not a longer bullet then the 115 gr Ballistic Tip or Berger bullets.</p><p></p><p>It is bullet length that requires faster twist to stabilize, not bullet weight.</p><p></p><p>I have yet to see a factory 25-06 come into the shop that would average at or less then 1/2 moa with the 115 gr Ballistic Tip or 115 gr Berger.</p><p></p><p>I have seen a host of them accurately shoot the 117 gr Sierra and Hornady SPBT pills because they are shorter bullets.</p><p></p><p>As far as the 6mm-284 goes, I was driving a coated 107 gr Sierra to an honest 3600 fps from the Lilja 3 groove, 1-8", 30" barrel.</p><p></p><p>Groups at 500 yards were never over 1/3 moa for three shots and it has shot more 1/5 moa groups then I will admit for fear of being called a liar.</p><p></p><p>Still this was a hot load, primer pockets were loosening after 5 firings ao I dropped the load down a full grain which averages 3545 fps with the same group size.</p><p></p><p>In fact, with the 107 gr Sierra, I was getting basically the same group size at 500 yards from 3100 fps up to the top 3600 fps.</p><p></p><p>With the Hornady and Berger bullets, accuracy failed at 3250 fps with each.</p><p></p><p>For a comp rifle I would not recommend this level of load either but my rifle is a hunting rifle for extreme range rock chuck hunting where it may get 100 rounds fired a season. </p><p></p><p>At that rate, even with the high pressure loads, this rifle will probably be serving me well ten years from now.</p><p></p><p>Good Shooting!!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 35304, member: 10"] Lynn, Your comment about the 117 gr Sierra SPBT having a very high B.C. compared to the other 25 caliber bullets. Sierra list the 117 gr SPBT having a B.C. of .410. I agree this is better then the other Sierra 25 caliber bullets but it is roughly the same as the 100 gr Ballsitic Tip that I have tested just shy of .400 out of my 25-06 loaded to 3450 fps. The 115 gr Ballistic Tip has a much higher B.C. then the 117 gr Sierra and the 115 gr Berger is higher yet. This is where the problem lies in my mind. Even though the 117 gr Sierra is a heavier bullet, it is not a longer bullet then the 115 gr Ballistic Tip or Berger bullets. It is bullet length that requires faster twist to stabilize, not bullet weight. I have yet to see a factory 25-06 come into the shop that would average at or less then 1/2 moa with the 115 gr Ballistic Tip or 115 gr Berger. I have seen a host of them accurately shoot the 117 gr Sierra and Hornady SPBT pills because they are shorter bullets. As far as the 6mm-284 goes, I was driving a coated 107 gr Sierra to an honest 3600 fps from the Lilja 3 groove, 1-8", 30" barrel. Groups at 500 yards were never over 1/3 moa for three shots and it has shot more 1/5 moa groups then I will admit for fear of being called a liar. Still this was a hot load, primer pockets were loosening after 5 firings ao I dropped the load down a full grain which averages 3545 fps with the same group size. In fact, with the 107 gr Sierra, I was getting basically the same group size at 500 yards from 3100 fps up to the top 3600 fps. With the Hornady and Berger bullets, accuracy failed at 3250 fps with each. For a comp rifle I would not recommend this level of load either but my rifle is a hunting rifle for extreme range rock chuck hunting where it may get 100 rounds fired a season. At that rate, even with the high pressure loads, this rifle will probably be serving me well ten years from now. Good Shooting!!! Kirby Allen(50) [/QUOTE]
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115g VLD Berger for deer?
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