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Hunting
The Basics, Starting Out
Generalized bullet selection for hunting….
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<blockquote data-quote="Petey308" data-source="post: 2569015" data-attributes="member: 106845"><p>Blood pressure has to do with how much/hard the pump (heart) is pushing it and how much resistance there is from the blood vessels. An exit hole through hide would not affect blood pressure. Only ruptures to blood vessels, arteries, veins, organs, and the heart would affect blood pressure. A loss in blood will reduce pressure too. The lungs hold the most blood, so destroying lungs will destroy a ton of blood vessels and allow for a massive loss of blood, especially if the heart is still pumping it all out into the chest cavity. An exit would only allow that blood to spill out onto the ground. </p><p></p><p>A bullet that destroys vitals like that but doesn't exit will do more internal damage overall than a bullet that exited because the one that exited hell together more, retaining enough sectional density, to continue to penetrate and carry energy with it. Overall wounding will be less, as a result. That doesn't mean it still won't kill, or even quickly. An exit is only needed when a blood trail is needed because tracking is needed. </p><p></p><p>You can definitely use too light of a soft/frangible bullet for a particular scenario and/or place it on a spot where resistance upon impact would be too high, and without sufficient sectional density, that bullet will experience shallow penetration and over-expansion. It won't exit and most of the damage will be shallow too, sometimes more so on the surface. All the energy will have gone into the animal though, just not where it needs to go to do the most good. So it's still crucial that you select the right bullet and with sufficient sectional density. That's a key factor and something many hunters get wrong and don't understand. </p><p></p><p>I've seen match bullets with plenty of sectional density punch right through on double shoulder shots. They're 100% capable of those shots and doing it reliably. You just need to understand how the particular one you're using is constructed and how much SD is needed with that bullet for those shots, and what the limits are as far as impact velocity. If you take a double shoulder shot and it would impact outside its limits, you can't expect it to perform ideally. And just using a mono instead isn't going to automatically give you good performance with that shot either. Those bullets have limitations too and I've seen plenty of double shoulder shots with soft/frangible bullets that have outperformed many monos with the same shot. </p><p></p><p>If most of your hunting is done at closer ranges or you tend to use fast pushing cartridges that even medium distance shots impact at higher velocities, tougher constructed bullets will work well for you. If you take shots or have a good chance of taking shots where impact velocities would be 2000fps or lower, soft/frangible bullets will overall perform best for you. The best course of action is to simply use the heaviest for caliber version your rifle shoots well and to sufficient speeds. If you're using a soft/frangible bullet with an SD of .280 or more, you can use that without issue of shallow penetration and over-expansion for closer range shots, but you still get excellent wounding and terminal performance well below 1800fps impact velocities too. Bonded and/or monos just don't do that as well.</p></blockquote><p></p>
[QUOTE="Petey308, post: 2569015, member: 106845"] Blood pressure has to do with how much/hard the pump (heart) is pushing it and how much resistance there is from the blood vessels. An exit hole through hide would not affect blood pressure. Only ruptures to blood vessels, arteries, veins, organs, and the heart would affect blood pressure. A loss in blood will reduce pressure too. The lungs hold the most blood, so destroying lungs will destroy a ton of blood vessels and allow for a massive loss of blood, especially if the heart is still pumping it all out into the chest cavity. An exit would only allow that blood to spill out onto the ground. A bullet that destroys vitals like that but doesn’t exit will do more internal damage overall than a bullet that exited because the one that exited hell together more, retaining enough sectional density, to continue to penetrate and carry energy with it. Overall wounding will be less, as a result. That doesn’t mean it still won’t kill, or even quickly. An exit is only needed when a blood trail is needed because tracking is needed. You can definitely use too light of a soft/frangible bullet for a particular scenario and/or place it on a spot where resistance upon impact would be too high, and without sufficient sectional density, that bullet will experience shallow penetration and over-expansion. It won’t exit and most of the damage will be shallow too, sometimes more so on the surface. All the energy will have gone into the animal though, just not where it needs to go to do the most good. So it’s still crucial that you select the right bullet and with sufficient sectional density. That’s a key factor and something many hunters get wrong and don’t understand. I’ve seen match bullets with plenty of sectional density punch right through on double shoulder shots. They’re 100% capable of those shots and doing it reliably. You just need to understand how the particular one you’re using is constructed and how much SD is needed with that bullet for those shots, and what the limits are as far as impact velocity. If you take a double shoulder shot and it would impact outside its limits, you can’t expect it to perform ideally. And just using a mono instead isn’t going to automatically give you good performance with that shot either. Those bullets have limitations too and I’ve seen plenty of double shoulder shots with soft/frangible bullets that have outperformed many monos with the same shot. If most of your hunting is done at closer ranges or you tend to use fast pushing cartridges that even medium distance shots impact at higher velocities, tougher constructed bullets will work well for you. If you take shots or have a good chance of taking shots where impact velocities would be 2000fps or lower, soft/frangible bullets will overall perform best for you. The best course of action is to simply use the heaviest for caliber version your rifle shoots well and to sufficient speeds. If you’re using a soft/frangible bullet with an SD of .280 or more, you can use that without issue of shallow penetration and over-expansion for closer range shots, but you still get excellent wounding and terminal performance well below 1800fps impact velocities too. Bonded and/or monos just don’t do that as well. [/QUOTE]
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