Find and study cross sectioned photos or images of bullets. You can very well predict how they will probably act. The Norma Oryx, Remington Core-Lokt Ultra Bonded and Woodleigh Weldcore. ALL are simply thin jacketed, conventional cup and core designs that have been bonded. When they meet tough resistance they will expand rapidly. If they meet hard and/or tough resistance at close range at higher velocity, they can over expand and come apart and suffer inadequate penetration just like the non-bonded forms of same bullet. The only way to work around that with a thin jacketed, conventional cup and core bullet, for example on buffalo, would be to use a heavy-for-caliber bullet at lower velocity with a higher sectional density. I personally would rather use both a tougher bullet
and heavy-for-caliber especially in the 375 for buffalo- just my opinion.
For DG like buffalo no matter if you are hunting or backing up, most everyone with experience recommends a
tougher expanding bullet. Bonding is fine but it is no substitute for a tough design. There are three bullets out there that are very similar in design to the one IVW is recommending. These bullets are bonded, cup and core but have a thick base with heavy tapering jacket. They are: the missing-in-action in Sweden North Fork Soft Point, the RSA Rhino Soft Point and the US Trophy Bonded Bear Claw. A slightly more complex design with similar terminal characteristics would be the Swift A-Frame. The other common tough bullet for DG would be the Barnes TSX. Depending on where you are, most all ammo and components are becoming increasingly difficult to find and options are thinning rapidly. International availability is another complex hurdle.
I've added a couple of pics to illustrate the difference between a "soft" bonded bullet and a "tough" bonded bullet. I have experience with both and I will never again use the soft design, bonded or not for any big game much less something like a buffalo. Should be easy to predict the terminal potentials based on the design. The Norma Oryx cross section looks nearly identical to the Remington Core-Lokt Ultra. The Rhino Soft Point is very similar in design to the TBBC.
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