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Longrange reality check
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<blockquote data-quote="4ked Horn" data-source="post: 58861" data-attributes="member: 11"><p>[ QUOTE ]</p><p>You stated in a previous post about getting a heavy barrelled rifle. Is the heavy barrel necessary?</p><p></p><p>[/ QUOTE ]</p><p></p><p>A heavy bbl has many benefits toward long range shooting. First you must remember that accuracy and precision (which are NOT the same thing) are dependant on consistancy. In order to send a bullet on the same path every thing must be the same. In order to predict this path every thing must be the same. That being said, a heavy bbl warms more slowly. This means that your shots travel down a bbl that is a more consistant temp. The stresses in the bbl that cause it to change shape appear more slowly and therefore each subsequent shot taken is affected only a small amount. A thin wall bbl heats quickly and the stresses in the steel wil cause a more rapid warping and bending in the shape of the bbl. You will notice this by shooting at a target 5 or 10 times in a row with your shots a few (10-20)seconds apart. The holes in the target will normaly rise from the point of aim, up and to the right. With a thick walled bbl this happens more slowly. The bullet holes will be closer together. They may not even "string" at all over a 10 shot group.</p><p></p><p>Another benefit to a heavy bbl is the reduction of bbl "whip". Picture a long balloon hanging empty from your mouth. As you begin to blow air into the balloon it begins to rise from your mouth outward. A gun bbl will do the same thing as the bullet is pushed outward by very high pressures. It actually hangs in an arc (if it is freefloated) and as the bullet moves it stiffens and the muzzle whips upward. As the bullet is leaving the bbl the tail of the bullet receives an upward kick. However there is a law of gyroscopic physics that causes the upward kick to result in a sideways spin of the bullet. The more the bullet is disrupted upon its launch the harder it is for the bullet to restabilize in flight. The bigger the disruption the les consistant the flight.</p><p></p><p>A heavy bbl whips less and heats slower and dampens shooter movement but is it necessary? I will leave that for you to decide based on the type of shooting you will be doing and the distances you are trying to reach. There are more than a few match grade thin bbls on some very nice rifles that are designed to be more portable than the heavy guns but still put that first cold bbl shot in the same place every time.</p><p></p><p>A lot of words, hope they helped.</p></blockquote><p></p>
[QUOTE="4ked Horn, post: 58861, member: 11"] [ QUOTE ] You stated in a previous post about getting a heavy barrelled rifle. Is the heavy barrel necessary? [/ QUOTE ] A heavy bbl has many benefits toward long range shooting. First you must remember that accuracy and precision (which are NOT the same thing) are dependant on consistancy. In order to send a bullet on the same path every thing must be the same. In order to predict this path every thing must be the same. That being said, a heavy bbl warms more slowly. This means that your shots travel down a bbl that is a more consistant temp. The stresses in the bbl that cause it to change shape appear more slowly and therefore each subsequent shot taken is affected only a small amount. A thin wall bbl heats quickly and the stresses in the steel wil cause a more rapid warping and bending in the shape of the bbl. You will notice this by shooting at a target 5 or 10 times in a row with your shots a few (10-20)seconds apart. The holes in the target will normaly rise from the point of aim, up and to the right. With a thick walled bbl this happens more slowly. The bullet holes will be closer together. They may not even "string" at all over a 10 shot group. Another benefit to a heavy bbl is the reduction of bbl "whip". Picture a long balloon hanging empty from your mouth. As you begin to blow air into the balloon it begins to rise from your mouth outward. A gun bbl will do the same thing as the bullet is pushed outward by very high pressures. It actually hangs in an arc (if it is freefloated) and as the bullet moves it stiffens and the muzzle whips upward. As the bullet is leaving the bbl the tail of the bullet receives an upward kick. However there is a law of gyroscopic physics that causes the upward kick to result in a sideways spin of the bullet. The more the bullet is disrupted upon its launch the harder it is for the bullet to restabilize in flight. The bigger the disruption the les consistant the flight. A heavy bbl whips less and heats slower and dampens shooter movement but is it necessary? I will leave that for you to decide based on the type of shooting you will be doing and the distances you are trying to reach. There are more than a few match grade thin bbls on some very nice rifles that are designed to be more portable than the heavy guns but still put that first cold bbl shot in the same place every time. A lot of words, hope they helped. [/QUOTE]
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