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The Basics, Starting Out
Bullet construction
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<blockquote data-quote="Petey308" data-source="post: 2329159" data-attributes="member: 106845"><p>Hello sir,</p><p></p><p>Let me first say that I mean no offense but found your comment hard to follow and fully decipher, so I may not answer everything properly as a result. </p><p></p><p>From what I gather though, you were using a 220gr ELDX at a close range abd impact velocity was still very high, especially for the shot placement used. While the ELDX is a tougher constructed cup and core bullet, it's still not fully bonded and with such a particular shot, will still suffer from over-expansion and shallow penetration. </p><p></p><p>In your scenario, based on my experience and studies, a shot placement behind the shoulder, or in front if quartering-to, would have been better to lower how much resistance the bullet encountered upon impact. With most cup and core bullets, especially those not chemically/electrically bonded, I tend to tell guys to avoid impacting above 2600fps if at all possible, but at least avoid shoulder shots, and when you start getting below 2400fps, start actually aiming for shoulders. Obviously this depends greatly on the particular bullet, its construction/composition, and how much sectional density it has. The softer and more frangible a bullet is, the more sectional density you want. The tougher the bullet, the less you want, but ideally no less than .260 for most deer and larger game. The 220gr ELDX has an SD of .331 which is quite high for that type of bullet, especially for a 3100fps Impact on a shoulder. </p><p></p><p>Does this help? I could maybe elaborate further if needed or if I missed something. I also think I may have mentioned in other comments similar things regarding my rules of thumb on minimum and maximum impact velocities with the different bullet types.</p></blockquote><p></p>
[QUOTE="Petey308, post: 2329159, member: 106845"] Hello sir, Let me first say that I mean no offense but found your comment hard to follow and fully decipher, so I may not answer everything properly as a result. From what I gather though, you were using a 220gr ELDX at a close range abd impact velocity was still very high, especially for the shot placement used. While the ELDX is a tougher constructed cup and core bullet, it’s still not fully bonded and with such a particular shot, will still suffer from over-expansion and shallow penetration. In your scenario, based on my experience and studies, a shot placement behind the shoulder, or in front if quartering-to, would have been better to lower how much resistance the bullet encountered upon impact. With most cup and core bullets, especially those not chemically/electrically bonded, I tend to tell guys to avoid impacting above 2600fps if at all possible, but at least avoid shoulder shots, and when you start getting below 2400fps, start actually aiming for shoulders. Obviously this depends greatly on the particular bullet, its construction/composition, and how much sectional density it has. The softer and more frangible a bullet is, the more sectional density you want. The tougher the bullet, the less you want, but ideally no less than .260 for most deer and larger game. The 220gr ELDX has an SD of .331 which is quite high for that type of bullet, especially for a 3100fps Impact on a shoulder. Does this help? I could maybe elaborate further if needed or if I missed something. I also think I may have mentioned in other comments similar things regarding my rules of thumb on minimum and maximum impact velocities with the different bullet types. [/QUOTE]
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