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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Caliber recoil comparison ?
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<blockquote data-quote="Trickymissfit" data-source="post: 440996" data-attributes="member: 25383"><p>the question was about felt recoil between a mag case and a standard case. One would assume they also were using identical bullets with identical chamber pressures to even begin a serious compairison. </p><p>When the bullet enters the barrel it automaticly starts relieving built up pressures in the case in an inverse proportional square (in otherwords there is more volume in the cylinder to be filled by a specific volume of gas). But as the bullet strikes the rifeling there is a like reaction in the opposite direction (there's actually several reactions going on at the same instant). This the start of felt recoil generated from the bolt thrust. There will also be a thrust generated from the recoil lug, but one has to assume they are both identical in the two rifles. The only thing different is the area of the case head in the two rounds. Physics 101, or better yet Applied Mechanics 100. The volume of the case means little if the chamber pressures are similar, and the case head becomes the piston in a gas cylinder pushing to the rear of the reciever</p><p> </p><p> Think of it in another way. You have a piston with 2 sq. in. of area and 100 psi pushing against it. Now you have another with 4 sq. in. of area, and the same pressure on it. The larger piston will have twice the force than the smaller one will. But if you cut the pressure to 50 psi on the larger cylinder you will have identical working forces. Doubt it? Call up a local hydraulics distributor and ask him.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 440996, member: 25383"] the question was about felt recoil between a mag case and a standard case. One would assume they also were using identical bullets with identical chamber pressures to even begin a serious compairison. When the bullet enters the barrel it automaticly starts relieving built up pressures in the case in an inverse proportional square (in otherwords there is more volume in the cylinder to be filled by a specific volume of gas). But as the bullet strikes the rifeling there is a like reaction in the opposite direction (there's actually several reactions going on at the same instant). This the start of felt recoil generated from the bolt thrust. There will also be a thrust generated from the recoil lug, but one has to assume they are both identical in the two rifles. The only thing different is the area of the case head in the two rounds. Physics 101, or better yet Applied Mechanics 100. The volume of the case means little if the chamber pressures are similar, and the case head becomes the piston in a gas cylinder pushing to the rear of the reciever Think of it in another way. You have a piston with 2 sq. in. of area and 100 psi pushing against it. Now you have another with 4 sq. in. of area, and the same pressure on it. The larger piston will have twice the force than the smaller one will. But if you cut the pressure to 50 psi on the larger cylinder you will have identical working forces. Doubt it? Call up a local hydraulics distributor and ask him. gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Caliber recoil comparison ?
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