Core/Jacket separation?

coleman1495 said:
In my limited experience hunting I have had the opportunity to test three bullets. All of which were in WT deer.

The first was a Rem Core-Lokt which is supposedly a bonded bullet. It was a 100gr 6mm projectile coming out of a .243 win at probably around 2400 fps (by the time of impact ~220yds away) That bullet had the jacket totally separate. The actual bullet went clean through both sides of the front of the animal (through the heart) and the jacket was found in the neck.

The second was a 100gr 6mm Interlock. This was from about 50yds away and was probably about around 2900fps at time of impact. The jacket totally exploded and ripped off. The bullet mushroomed and went clean through. It was a high shot that went under the spine (a lucky miss). Bits of jacket were through out the meat. No lead to be found

The third was a 139gr SST 7mm (7mm-08). This impacted at about 2450fps and hit in the sternum. The jacket totally separated and the bullet came out in the middle of the ribs. The jacket was in bits.

Anyways I think three times makes it science right? I think jacket separation is not uncommon. In every instance the actual lead held together nicely. I am going to try the 139gr Interbond next to see if the jackets stays on or not.
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No the Core-Lokt isn't bonded. The Premier Core-Lokt Ultra Bonded is.
 
If I had those bullets in my collection, from ONE animal, I would not use them again. A dead animal does not prove it was acceptable bullet performance, and anyone who thinks that you can't buy bullets that will almost NEVER come apart like that, doesn't have any real experience with several "premium" bullets. Get some good bullets for next time.
 
My brother just tagged a nice 7 pointer with his 7x57 and some factory Rem 140gr core-loct. Range was 50m or so, and the first bullet was right behind the front shoulder but the deer didn't flinch and took off straight towards him, once he had an angle, 2nd bullet right behind the shouldler again, 2" from the first hit but now about 30m....still running. 3rd one he put in the neck and it dropped.
Every bullet grenaded at that range, the 2 behind the shoulder hit heart and lung, holes everywhere, frags everywhere, it would have died within 5 mins from the first shot no doubt...
 
coleman1495 said:
Excellent, I did not know that. What does the "Core-Lokt" part imply? I never read into it very carefully before.
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If I understand it correctly, the basic Core-Lokt has the jacket intruding into the lead core at some point, giving the core something to hang on to, as it were. The bonded version will have adhesion over the entire contact surface of the two components. This would the same difference as that between Hornady's Interlock and Interbond. And certainly "Premier ... Ultra Bonded" means extra $.
 
TheTooner said:
If I understand it correctly, the basic Core-Lokt has the jacket intruding into the lead core at some point, giving the core something to hang on to, as it were. The bonded version will have adhesion over the entire contact surface of the two components. This would the same difference as that between Hornady's Interlock and Interbond. And certainly "Premier ... Ultra Bonded" means extra $.
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I reload with Hornady 174gr. Interlock round nose for my .303British and am entirely satisfied with their performance. I'm no fan of the Remington company but if I need to buy off the shelf ammo for hunting with my Lee Enfields I buy their Core-Lokt ammo and finds it works just as well.
 
well, I guess Hornady loves the interlocks.
their newest super-duper, world changing bullet, the Hornady® ELD-X™ with Heat Shield™ Tip is an interlock!
 
legi0n said:
well, I guess Hornady loves the interlocks.
their newest super-duper, world changing bullet, the Hornady® ELD-X™ with Heat Shield™ Tip is an interlock!
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Interlocks sell well because they are reasonably priced and have a reputation for being "good enough", basically, even in magnums. When the .375 RUM first came out for example, the 270 grain Interlock factory loadings were basically the ammo the cartridge was introduced with.

Basing their new bullet on the Interbond and then asking twice as much for it would likely have been a bad idea if they wanted to actually sell lots of them...
 
The early Interloks in the dark red box were a great bullet.They have cut corners somewhere in the manufacturing process and will not admit it at least when I talked to them.I had a 286gr SP from a 9.3x62 turn inside out on a moose shoulder failing to penetrate the blade at 180 yards launched at 2400fps.Had .270 130gr Inter-Loks also explode on deer and a medium sized black bear.Only Partitions ,Accu Bonds,Barnes X and Scirrocco 2 for me now........Harold
 
TheTooner said:
If I understand it correctly, the basic Core-Lokt has the jacket intruding into the lead core at some point, giving the core something to hang on to, as it were. The bonded version will have adhesion over the entire contact surface of the two components. This would the same difference as that between Hornady's Interlock and Interbond. And certainly "Premier ... Ultra Bonded" means extra $.
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My understanding was that the cannelure was the part on the interlock that "locked" the jacket to the core. I don't think core-lokt bullets have cannelures or really any kind of a crimped in part.
 
I haven't seen a Core-Lokt out of its case, but absent any cannelure or other crimp visible on the outside I suppose the jacket could still have been formed with a protrusion inside.
 
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