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Hunting
The Basics, Starting Out
CALIBER CHOICES
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<blockquote data-quote="speedbump" data-source="post: 52021" data-attributes="member: 547"><p>TEXAS,</p><p></p><p>I'm going off my very iffy memory bank <img src="http://images/icons/confused.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> here so if I toss something out in error, please anyone, feel free to correct my silliness....</p><p></p><p>VLD stands for 'Very Low Drag.' The concept was pioneered by Jimmie Knox (JLK Bullets) & a few others. Basically, it's a term for a bullet design with a different degree of angle to the ogive & a generally longer more streamlined shape. From the way I understand it (which ain't sayin' a whole lot) even the shape/taper of the boattail has something to do with it. They're normally in the heavier weights for a given caliber & have a high BC.</p><p></p><p>VLDs usually do better seated into the lands a little. Some don't. I shoot Berger 70 & 80VLDs in my AR-15 service rifle. The 70s are seated to magazine length & tolerate the jump to the lands VERY well - they group very tight in rapid fire. The 80s are seated into the lands slightly. Most manufacturers wisely suggest letting the barrel/throat tell you what seating depth is best through trial & error.</p><p></p><p>I don't think Sierra MKs aren't considered true VLDs due to their ogive & overall shape. It doesn't make them any less usable, they obviously do very well in many rifles. </p><p></p><p>Well, I hope this helped & wasn't TOO far off base. DC, Warren Jensen & others - feel free to dissect my feeble attempt at an explanation.... <img src="http://images/icons/rolleyes.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="speedbump, post: 52021, member: 547"] TEXAS, I'm going off my very iffy memory bank [img]images/icons/confused.gif[/img] here so if I toss something out in error, please anyone, feel free to correct my silliness.... VLD stands for 'Very Low Drag.' The concept was pioneered by Jimmie Knox (JLK Bullets) & a few others. Basically, it's a term for a bullet design with a different degree of angle to the ogive & a generally longer more streamlined shape. From the way I understand it (which ain't sayin' a whole lot) even the shape/taper of the boattail has something to do with it. They're normally in the heavier weights for a given caliber & have a high BC. VLDs usually do better seated into the lands a little. Some don't. I shoot Berger 70 & 80VLDs in my AR-15 service rifle. The 70s are seated to magazine length & tolerate the jump to the lands VERY well - they group very tight in rapid fire. The 80s are seated into the lands slightly. Most manufacturers wisely suggest letting the barrel/throat tell you what seating depth is best through trial & error. I don't think Sierra MKs aren't considered true VLDs due to their ogive & overall shape. It doesn't make them any less usable, they obviously do very well in many rifles. Well, I hope this helped & wasn't TOO far off base. DC, Warren Jensen & others - feel free to dissect my feeble attempt at an explanation.... [img]images/icons/rolleyes.gif[/img] [/QUOTE]
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