GMX Performance at ~2500fps?

[adriel]

I'm not sure that kills could be classified as faster with a cup and core......depending on shot placement of course. I'd say both bullets kill with equal speed, shot placement being equal. I've seen dozens of animals drop on the spot with both mono metals and cup and cores and I've seen many animals run off and die elsewhere with both. No doubt the damage done by a cup and core if often more dramatic looking but I'm not convinced that equates to faster death.

There was a study with South Carolina's dep't of natural resources that suggested that "regular" bullets resulted in faster kills (on deer at least). http://www.rathcoombe.net/sci-tech/ballistics/game_study.html

Paraphrased for brevity: Soft bullets resulted in instantaneous kills 58% of the time, with mean travel distance of 27 yards. Hard (premium) bullets dropped the deer in its tracks only 40% of the time, with a mean travel distance of 43 yards.

The study only covers 500 kills, but that should give some statistical significance.

 

[Scanner_66]

I tried going back to a cup/core bullet this year after years of Barnes MRX satisfaction...both killed, what I noticed was a significant increase in blood shot meat with the cup and core...some respected friends swear by Partitions but I am going to have a hard time straying from the Barnes with less damage to edible meat IMHO

 

[ivor]

There is never a guarantee of a large exit hole regardless of bullet. With more explosive bullets you often don't even get one and occasionally you get one the size of your head with a mono metal. My point is, a lot of people seem to believe that a small exit hole indicates poor expansion when the truth is, regardless of bullet, you rarely get more than 2x expansion so a 1" exit hole shouldn't be that surprising, especially from a bullet that retains most of it's weight. The only way you get a large exit hole is from the hide being pushed out by the bullet and tearing, not from the huge shrapnel field of a cup and core. That tearing is more a function of angle, what's being pushed in front of the bullet and speed. The tear on the far side in the hide is little indication of what happened inside the animal.

It will also happen if the bullet manages to push a chunk of bone out with it.
Ivor