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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Heavy bullets in .308 Win - 200 grains and up
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<blockquote data-quote="AZShooter" data-source="post: 2529300" data-attributes="member: 5219"><p>Broz wrote about the 215 Berger in a larger cartridge BUT he mentioned velocity and performance on antelope. This can give you some real data on what your 308 will do:</p><p></p><p></p><p>From Broz' old thread on 210 vld vs 215 hybrid:</p><p></p><p>802yds with an impact velocity of 2191 fps.</p><p></p><p>1005 with an impact velocity of about 1937 fps</p><p></p><p>and the one at 1285 yards with an <strong>impact velocity of about 1677 fps. </strong></p><p></p><p>More:</p><p></p><p>Exits on the 1005 and 1285 were smaller. About 2" for the 1005 yard shot with an impact velocity of 1937 and <strong>a beautiful 1 1/2" exit for the shot at 1285 yds with an impact velocity of 1677 fps. </strong>I like the fact that every antelope we have shot at any range the bullet has entered before expanding. Most of the close shots have included a good amount of bone so that could be some of the large exits. But for sure they are killing pretty darn good at all distances. I look most at what the bullet does at the longer ranges with lower impact velocity. I need a bullet that will expand for the long shots first and foremost. So if I have to have a little more carnage at the shorter distances I can live with it. Dead is dead! With the heavier target jackets I didn't expect this good of performance at slowed velocities / long shots on these soft antelope.</p><p></p><p>All have expanded well. In fact, I like what they are doing below 2200 better than above for what I like to see"</p><p></p><p> Unfortunately your rifle's 1 in 11 twist may not stabilize this bullet. Berger's stability calculator says: <strong>Your bullet stability is marginal. You may shoot good groups under these conditions, but the BC of the bullet will not be optimized. It would have a reduced g7 BC of .315.</strong></p><p></p><p>I ran some numbers for 2400 fps and it looks like your 308 Win will have sufficient velocity for expansion well past 400 yards. Heck even with a muzzle velocity of 2200 fps velocity is around 1800 fps at 400 yds.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 2529300, member: 5219"] Broz wrote about the 215 Berger in a larger cartridge BUT he mentioned velocity and performance on antelope. This can give you some real data on what your 308 will do: From Broz' old thread on 210 vld vs 215 hybrid: 802yds with an impact velocity of 2191 fps. 1005 with an impact velocity of about 1937 fps and the one at 1285 yards with an [B]impact velocity of about 1677 fps. [/B] More: Exits on the 1005 and 1285 were smaller. About 2" for the 1005 yard shot with an impact velocity of 1937 and [B]a beautiful 1 1/2" exit for the shot at 1285 yds with an impact velocity of 1677 fps. [/B]I like the fact that every antelope we have shot at any range the bullet has entered before expanding. Most of the close shots have included a good amount of bone so that could be some of the large exits. But for sure they are killing pretty darn good at all distances. I look most at what the bullet does at the longer ranges with lower impact velocity. I need a bullet that will expand for the long shots first and foremost. So if I have to have a little more carnage at the shorter distances I can live with it. Dead is dead! With the heavier target jackets I didn't expect this good of performance at slowed velocities / long shots on these soft antelope. All have expanded well. In fact, I like what they are doing below 2200 better than above for what I like to see" Unfortunately your rifle's 1 in 11 twist may not stabilize this bullet. Berger's stability calculator says: [B]Your bullet stability is marginal. You may shoot good groups under these conditions, but the BC of the bullet will not be optimized. It would have a reduced g7 BC of .315.[/B] I ran some numbers for 2400 fps and it looks like your 308 Win will have sufficient velocity for expansion well past 400 yards. Heck even with a muzzle velocity of 2200 fps velocity is around 1800 fps at 400 yds. [/QUOTE]
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Heavy bullets in .308 Win - 200 grains and up
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