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Long Range Hunting & Shooting
Effect of Bullet Spin on Terminal Performance
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<blockquote data-quote="Milepost" data-source="post: 1695603" data-attributes="member: 104022"><p>I get that, and your exactly right! (spent 20 years in the military...)</p><p></p><p></p><p>All very good points... You explained the mechanism for which how spin/rotation speed makes a modern bullets more terminal. This is a major component in the design of the bullet.</p><p></p><p>It sounds like you are presuming that a modern day bullet was designed to hold together well after impact like a Barnes. Some do and some don't. There are many monolithic bullets that are designed to come apart using the centrifugal force of the spin rotation to create a larger wound channel in the boiler room such as the Cutting Edge Laser or Hammers. The Berger lead core bullets also exploit this concept to create massive internal trauma and it was designed right into the manufacturers design from the very start. However, these same extreme rotational forces work against a bullet when exiting a barrel at extreme high velocities and a lead core bullet can deform or comes apart. So for lead core bullets its all a compromise.</p><p></p><p>The problem arises when we select a specific bullet/cal and then try to use it in a way that is outside of its intended design. Acknowledging these limits and selecting the right bullet for the job.... I've seen way too many hunters only work up one load/bullet and then try to use it for EVERYTHING! Of course the one load/bullet idea isn't really a bad idea because you become experienced and confident with that round and that converts over to accuracy. Accuracy, as we all know, trumps everything...but in the long range game the wind and rain will humble even the best hunter. So if your smart, you will select a a high BC bullet that is first priority accurate and also creates the widest internal wound channel. When your shot is off the mark all that flying shrapnel helps to make for a quick and humane kill. The fast spin rate is the mechanism for this type of bullet to do its work. But what do you do when the game your hunting is up close? That same ELR bullet may not be ideal for an under 300 yard point blank range shot. That's were a Barnes or similar bullet design works best... fast spin & fast speed=DRT! </p><p></p><p>When I head out with my 300 Norma or 28 Nosler I may intend to shoot at extreme ranges but you never know!?! So now I always run with two loads. Two in the mag for surprise up close shots and two on the side for ELR.</p></blockquote><p></p>
[QUOTE="Milepost, post: 1695603, member: 104022"] I get that, and your exactly right! (spent 20 years in the military...) All very good points... You explained the mechanism for which how spin/rotation speed makes a modern bullets more terminal. This is a major component in the design of the bullet. It sounds like you are presuming that a modern day bullet was designed to hold together well after impact like a Barnes. Some do and some don't. There are many monolithic bullets that are designed to come apart using the centrifugal force of the spin rotation to create a larger wound channel in the boiler room such as the Cutting Edge Laser or Hammers. The Berger lead core bullets also exploit this concept to create massive internal trauma and it was designed right into the manufacturers design from the very start. However, these same extreme rotational forces work against a bullet when exiting a barrel at extreme high velocities and a lead core bullet can deform or comes apart. So for lead core bullets its all a compromise. The problem arises when we select a specific bullet/cal and then try to use it in a way that is outside of its intended design. Acknowledging these limits and selecting the right bullet for the job.... I've seen way too many hunters only work up one load/bullet and then try to use it for EVERYTHING! Of course the one load/bullet idea isn't really a bad idea because you become experienced and confident with that round and that converts over to accuracy. Accuracy, as we all know, trumps everything...but in the long range game the wind and rain will humble even the best hunter. So if your smart, you will select a a high BC bullet that is first priority accurate and also creates the widest internal wound channel. When your shot is off the mark all that flying shrapnel helps to make for a quick and humane kill. The fast spin rate is the mechanism for this type of bullet to do its work. But what do you do when the game your hunting is up close? That same ELR bullet may not be ideal for an under 300 yard point blank range shot. That's were a Barnes or similar bullet design works best... fast spin & fast speed=DRT! When I head out with my 300 Norma or 28 Nosler I may intend to shoot at extreme ranges but you never know!?! So now I always run with two loads. Two in the mag for surprise up close shots and two on the side for ELR. [/QUOTE]
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