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Hornady 143 gr ELD X Terminal Performance Report
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<blockquote data-quote="WildRose" data-source="post: 1364849" data-attributes="member: 30902"><p>Sectional density doesn't stop jacket/core separations. It will result in a large enough fragment to get good penetration If you have a heavy enough projectile to begin with which is why they seem to work well in larger calibers like the .338's and bigger rounds.</p><p></p><p>I shot interbonds in my .375 Ruger on some very large animals in Africa and while the bullets all separated they all fell very dead. In each case they were full length body shots chest to rear so we were able to recover them.</p><p></p><p>Also I believe the jacket thickness is considerably greater in the heavier/large caliber bullets as well.</p><p></p><p>Bonding the Bullet doesn't prevent good expansion, it simply keeps the lead core "married" to the jacket.</p><p></p><p>In talking with Hornady they went the route of just using the cannelure figuring that at the impact velocities experienced at LR it would hold the bullet together well enough and that there would be little loss of mass from the lead in front of the cannelure anyhow due to the lower velocities.</p><p></p><p>Even at Ranges well beyond 400yds shooting the Interbond from the 7mm RM and 7mm STW I never had a problem with a lack of expansion nor did I ever run into the problem of bullet breakup at sub 400yds impacts either.</p><p></p><p>Accubonds seemed to need a bit more velocity than the Interbond to expand reliably but I think that was probably just due to a difference in jacket thickness and perhaps the hardness of the allow used.</p><p></p><p>Interestingly Nosler made a .277 cal 110gr accubond specifically for the 6.8 spc that I've found to be extremely reliable even at impact velocities well below 2000fps.</p></blockquote><p></p>
[QUOTE="WildRose, post: 1364849, member: 30902"] Sectional density doesn't stop jacket/core separations. It will result in a large enough fragment to get good penetration If you have a heavy enough projectile to begin with which is why they seem to work well in larger calibers like the .338's and bigger rounds. I shot interbonds in my .375 Ruger on some very large animals in Africa and while the bullets all separated they all fell very dead. In each case they were full length body shots chest to rear so we were able to recover them. Also I believe the jacket thickness is considerably greater in the heavier/large caliber bullets as well. Bonding the Bullet doesn't prevent good expansion, it simply keeps the lead core "married" to the jacket. In talking with Hornady they went the route of just using the cannelure figuring that at the impact velocities experienced at LR it would hold the bullet together well enough and that there would be little loss of mass from the lead in front of the cannelure anyhow due to the lower velocities. Even at Ranges well beyond 400yds shooting the Interbond from the 7mm RM and 7mm STW I never had a problem with a lack of expansion nor did I ever run into the problem of bullet breakup at sub 400yds impacts either. Accubonds seemed to need a bit more velocity than the Interbond to expand reliably but I think that was probably just due to a difference in jacket thickness and perhaps the hardness of the allow used. Interestingly Nosler made a .277 cal 110gr accubond specifically for the 6.8 spc that I've found to be extremely reliable even at impact velocities well below 2000fps. [/QUOTE]
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Hornady 143 gr ELD X Terminal Performance Report
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