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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Does "anyone" ever take Sectional Density into consideration!!
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<blockquote data-quote="bigngreen" data-source="post: 1541374" data-attributes="member: 13632"><p>This is a good comparison to see they whys somethings happen that seem not logical, the VLD opens based on hydraulic pressure in the tip forcing open the tip sometimes blowing it of exposing the lead and jacket to start mushrooming. The ABLR opens to to mechanical force pushing the tip back and starting opening then it moves to the side exposing a larger cavity. When cutting large volumes of game you'll find plastic tips in the entry wound all the time, never inside the animal or of side.</p><p>The VLD being not bonded and the ABLR being bonded but softer lead, in close hits I've seen the VLD delayed opening make it into the animal before you start seeing signs of expansion, then the tip blows and a portion goes into a cloud of frag right in the core, but it's does not create a lot of frontal area so if less SD remains it's enough to continue pushing the bullet through if it's in a speed range that the jacket does not separate and the lead breaks in which case you'll see cut marks and frag in the inside of the ribs. The farther you get the less the jacket is stressed and it will stop ripping and you'll see consistent exits. </p><p>The ABLR you'll see immediate surface wounding all the way into the ribs because expansion is initiated on the hide, the tips seem to blow of and creates a mushroom due to bonding but smaller than a regular AB, I've seen these bullets damage the onside lungs impressively but the rest of the way through it's a 3/4-1 inch bruised hole where the expansion has stopped. At close range you'll find a waded up ball of lead under the hide at longer range the shank exits. The bonded bullets have issues in the velocity range where they open big and expand but it's to the point they loose to much SD to over come the frontal area that won't shear of or fold back against the shank. This is what I've seen in elk.</p><p>For me SD and frontal diameter is some key factors when I look at a bullet, I want them balanced so the bullets will penetrate through the on side but still do a lot of mechanical damage once in the core. Get one of and you'll see bullets penciling or bullets stopping on an elk shoulder like a Barnes or AB because their SD is to low for the frontal area, where a VLD will get small and retain enough SD to get into the core.</p></blockquote><p></p>
[QUOTE="bigngreen, post: 1541374, member: 13632"] This is a good comparison to see they whys somethings happen that seem not logical, the VLD opens based on hydraulic pressure in the tip forcing open the tip sometimes blowing it of exposing the lead and jacket to start mushrooming. The ABLR opens to to mechanical force pushing the tip back and starting opening then it moves to the side exposing a larger cavity. When cutting large volumes of game you'll find plastic tips in the entry wound all the time, never inside the animal or of side. The VLD being not bonded and the ABLR being bonded but softer lead, in close hits I've seen the VLD delayed opening make it into the animal before you start seeing signs of expansion, then the tip blows and a portion goes into a cloud of frag right in the core, but it's does not create a lot of frontal area so if less SD remains it's enough to continue pushing the bullet through if it's in a speed range that the jacket does not separate and the lead breaks in which case you'll see cut marks and frag in the inside of the ribs. The farther you get the less the jacket is stressed and it will stop ripping and you'll see consistent exits. The ABLR you'll see immediate surface wounding all the way into the ribs because expansion is initiated on the hide, the tips seem to blow of and creates a mushroom due to bonding but smaller than a regular AB, I've seen these bullets damage the onside lungs impressively but the rest of the way through it's a 3/4-1 inch bruised hole where the expansion has stopped. At close range you'll find a waded up ball of lead under the hide at longer range the shank exits. The bonded bullets have issues in the velocity range where they open big and expand but it's to the point they loose to much SD to over come the frontal area that won't shear of or fold back against the shank. This is what I've seen in elk. For me SD and frontal diameter is some key factors when I look at a bullet, I want them balanced so the bullets will penetrate through the on side but still do a lot of mechanical damage once in the core. Get one of and you'll see bullets penciling or bullets stopping on an elk shoulder like a Barnes or AB because their SD is to low for the frontal area, where a VLD will get small and retain enough SD to get into the core. [/QUOTE]
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Does "anyone" ever take Sectional Density into consideration!!
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