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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
3 Different Cartridges, Same Weight & Velocity Terminal Performance
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<blockquote data-quote="fordy" data-source="post: 3087338" data-attributes="member: 120504"><p>Gday Kris </p><p></p><p></p><p></p><p>A interesting question that has many answers</p><p></p><p>The first one I'll ask to give us a little clearer on the penertration requirements needed should be known first before any clearer assumptions be made </p><p></p><p></p><p></p><p>So we need to know the answer to my question first as if 20 inches of required penetration is required & if all 3 will exceed that penetration capabilities we need to understand how much ea pill will as now we are looking @ where the pill sits in the charts of width of wound channel per caliber & length of wound not just total penetration capabilities </p><p></p><p>Briefly /broadly </p><p>bigger the meplat the wider the wound </p><p> the smaller meplat the greater penetration </p><p></p><p>Sectional density is one that has stood up well in days gone by , today it's only just getting into the depths of breaking it down further/ better & more into length x calibre ratio in flight & terminal form of length of pill x calibre in terminal state </p><p></p><p>Then depending on the frontal diameter the shape of that frontal diameter & FOC of this terminal pill we have the true answers of what that pill does then add rpm to the equation & it shifts again </p><p>Velocity was once you can walk through water but not run </p><p>Meaning a slower pill will out penertrate a faster & yes it still holds water today for those pills of that era but some of today's pills not as much to not @all </p><p></p><p>Sorry I can't give a more precise answer as if we are talking a frangible a bonded a mushroom mono or a shedding mono they all have different characteristics that will lead us to having a different outcome on the 3 different calibers regardless if it is MV or impact as those factors need to be known first </p><p></p><p>Done a little on this lately & still trying to gather drone videos to show more visuals of what meplat size does but man alive it is hard to get a normal video camera the drone the shooter all lined up on the critter @ the same time then the critter moves hmmmits frustrating & I've got to get my son on the drone as man he's good @ flying it & battery life of my drone is 38 /47min in various conditions so we don't have enough time ( my mate & I ) for we are novices </p><p></p><p>This drone has a good thermal on it & that is cool on showing patterns also on pill behaviour </p><p>So if I can get the stars to align in a better way than we are getting @ the moment some cool information will come out of it im sure </p><p>Cheers</p></blockquote><p></p>
[QUOTE="fordy, post: 3087338, member: 120504"] Gday Kris A interesting question that has many answers The first one I'll ask to give us a little clearer on the penertration requirements needed should be known first before any clearer assumptions be made So we need to know the answer to my question first as if 20 inches of required penetration is required & if all 3 will exceed that penetration capabilities we need to understand how much ea pill will as now we are looking @ where the pill sits in the charts of width of wound channel per caliber & length of wound not just total penetration capabilities Briefly /broadly bigger the meplat the wider the wound the smaller meplat the greater penetration Sectional density is one that has stood up well in days gone by , today it’s only just getting into the depths of breaking it down further/ better & more into length x calibre ratio in flight & terminal form of length of pill x calibre in terminal state Then depending on the frontal diameter the shape of that frontal diameter & FOC of this terminal pill we have the true answers of what that pill does then add rpm to the equation & it shifts again Velocity was once you can walk through water but not run Meaning a slower pill will out penertrate a faster & yes it still holds water today for those pills of that era but some of today’s pills not as much to not @all Sorry I can’t give a more precise answer as if we are talking a frangible a bonded a mushroom mono or a shedding mono they all have different characteristics that will lead us to having a different outcome on the 3 different calibers regardless if it is MV or impact as those factors need to be known first Done a little on this lately & still trying to gather drone videos to show more visuals of what meplat size does but man alive it is hard to get a normal video camera the drone the shooter all lined up on the critter @ the same time then the critter moves hmmmits frustrating & I’ve got to get my son on the drone as man he’s good @ flying it & battery life of my drone is 38 /47min in various conditions so we don’t have enough time ( my mate & I ) for we are novices This drone has a good thermal on it & that is cool on showing patterns also on pill behaviour So if I can get the stars to align in a better way than we are getting @ the moment some cool information will come out of it im sure Cheers [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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