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Copper Monos - How to choose the right weight(and maybe caliber)?
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<blockquote data-quote="RockyMtnMT" data-source="post: 2623112" data-attributes="member: 7999"><p>The greatest factor is choosing a mono bullet for hunting, or any bullet for that matter, is proper stability. I think most stories we hear about bullet failure is due to marginal stability, not the bullet itself. There is a difference between ballistic stability and terminal stability. We list our bullets with a minimum required twist. This is based on terminal stability, not ballistic stability.</p><p></p><p>I will answer for Hammer Bullets. Our bullets do not require or need more velocity to have good terminal results. Our bullets are all tested down to 1800 fps for full expansion and shedding of the nose. Our bullets are capable of higher vel and we have not been able to impact them too fast. Higher impact velocity will result in more dramatic terminal performance. With that said there is no point, so far, that we have been able to over stabilize, or over spin a Hammer Bullet. Extra twist is a good thing ballistically and terminally.</p><p></p><p>The single most important thing to choosing a bullet is making sure that you meet the required minimum twist or faster. As long as this is done, the bullet will perform properly.</p><p></p><p>It was mentioned earlier that over penetration is a problem. This simply is not true. Bullets kill by tearing a hole in the vital tissue to create bleeding. This is a function of the terminal shape of the bullet and the speed that it travels through the vital tissue. As a bullet slows down inside the animal it creates less and less permanent wound until it creates none when it stops. A bullet that properly deforms and maintains higher velocity as it passes through vital tissue continues to create a large permanent wound channel for the entirety of the distance traveled. The goal with Hammer Bullets is to shed the nose in several pieces, typically about 4, and create a flat frontal area on the retained shank. Kind of like if you were shooting a flat based bullet backwards. This flat frontal area will displace soft tissue perpendicular to the direction of the bullet travel. The flat frontal area will displace material greater than a larger rounded mushroom because the rounded mushroom will smoothly part the material with less permanent tearing. The key here is the flat frontal area and being able to get it at high or low velocity impacts. Hammers do this. If I could make a magic bullet, it would change from it's ballistic form on impact to it's terminal form and then pass through the animal without loosing any velocity. This would create the largest possible wound channel. There is no such thing as energy dump. There is such a thing as shock. There is a large shock that is created by Hammers on impact as they open and shed the nose rapidly. This is the same kind of shock that happens with highly frangible lead bullets. The problem with highly frangible lead bullets, is they have a narrow impact velocity that they will work well with. Particularly with high vel impacts. They simply can't take it and will come all apart. Monos that retain all of their weight do need higher velocity to work well. This has created a stereotype that monos need more velocity to work well. This is not true with Hammers. </p><p></p><p>Then there is the resulting terminal performance from the shed weight. The shed nose petals of Hammers will tend to track with the retained shank and often exit with the retained shank. We often see the main exit hole with a few smaller holes around it. This increases the size of the permanent wound through the animal. If the shed petals radiate outward too much, then they have less contribution to the entire wound channel. Bullets that are scored or broached will shed the petals too easily resulting in less shock on the impact, resulting in less traumatic initial impact and a more outward direction of the petals. Not all copper is created equal. When we found the copper that we use, the terminal results on game were dramatically increased and we were able to get the ideal retained shank form from high or low velocity impacts.</p><p></p><p>We have made terminal performance our overriding most important factor to making hunting bullets. Nothing is more important than terminal performance in a hunting bullet.</p><p></p><p>In summery: Minimum required twist or faster for the chosen bullet is most important. Intended hunting distance and game pursued are next. Heavier for caliber bullets will extend the potential range.</p><p></p><p>Hope this helps and clears up some of the false mono stereotypes that are out there.</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 2623112, member: 7999"] The greatest factor is choosing a mono bullet for hunting, or any bullet for that matter, is proper stability. I think most stories we hear about bullet failure is due to marginal stability, not the bullet itself. There is a difference between ballistic stability and terminal stability. We list our bullets with a minimum required twist. This is based on terminal stability, not ballistic stability. I will answer for Hammer Bullets. Our bullets do not require or need more velocity to have good terminal results. Our bullets are all tested down to 1800 fps for full expansion and shedding of the nose. Our bullets are capable of higher vel and we have not been able to impact them too fast. Higher impact velocity will result in more dramatic terminal performance. With that said there is no point, so far, that we have been able to over stabilize, or over spin a Hammer Bullet. Extra twist is a good thing ballistically and terminally. The single most important thing to choosing a bullet is making sure that you meet the required minimum twist or faster. As long as this is done, the bullet will perform properly. It was mentioned earlier that over penetration is a problem. This simply is not true. Bullets kill by tearing a hole in the vital tissue to create bleeding. This is a function of the terminal shape of the bullet and the speed that it travels through the vital tissue. As a bullet slows down inside the animal it creates less and less permanent wound until it creates none when it stops. A bullet that properly deforms and maintains higher velocity as it passes through vital tissue continues to create a large permanent wound channel for the entirety of the distance traveled. The goal with Hammer Bullets is to shed the nose in several pieces, typically about 4, and create a flat frontal area on the retained shank. Kind of like if you were shooting a flat based bullet backwards. This flat frontal area will displace soft tissue perpendicular to the direction of the bullet travel. The flat frontal area will displace material greater than a larger rounded mushroom because the rounded mushroom will smoothly part the material with less permanent tearing. The key here is the flat frontal area and being able to get it at high or low velocity impacts. Hammers do this. If I could make a magic bullet, it would change from it's ballistic form on impact to it's terminal form and then pass through the animal without loosing any velocity. This would create the largest possible wound channel. There is no such thing as energy dump. There is such a thing as shock. There is a large shock that is created by Hammers on impact as they open and shed the nose rapidly. This is the same kind of shock that happens with highly frangible lead bullets. The problem with highly frangible lead bullets, is they have a narrow impact velocity that they will work well with. Particularly with high vel impacts. They simply can't take it and will come all apart. Monos that retain all of their weight do need higher velocity to work well. This has created a stereotype that monos need more velocity to work well. This is not true with Hammers. Then there is the resulting terminal performance from the shed weight. The shed nose petals of Hammers will tend to track with the retained shank and often exit with the retained shank. We often see the main exit hole with a few smaller holes around it. This increases the size of the permanent wound through the animal. If the shed petals radiate outward too much, then they have less contribution to the entire wound channel. Bullets that are scored or broached will shed the petals too easily resulting in less shock on the impact, resulting in less traumatic initial impact and a more outward direction of the petals. Not all copper is created equal. When we found the copper that we use, the terminal results on game were dramatically increased and we were able to get the ideal retained shank form from high or low velocity impacts. We have made terminal performance our overriding most important factor to making hunting bullets. Nothing is more important than terminal performance in a hunting bullet. In summery: Minimum required twist or faster for the chosen bullet is most important. Intended hunting distance and game pursued are next. Heavier for caliber bullets will extend the potential range. Hope this helps and clears up some of the false mono stereotypes that are out there. [/QUOTE]
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