I gues my thoughts were to have one bullet for accurate paper puching and use that same bullet out in field hunting deer and moose. I guess I should have specified it will be out of a 308.
thank you all for the great advice.
Eric
I actually like the Hornady AMax, both for paper and for hunting. 178 grain from a 300 SAUM. They pretty well explode after initial penetration. Often times, I found maybe 75% of the jacket up against the far side of the animal's hide, with no exit wound. means that the bullet is delivering the entire payload of energy into the target.
Have also had really good results with the 210 grain Berger VLD frm the same gun. They also fragment big time. Personally, my belief is that if a bullet retains its weight, and an exit wound is created, then the bullet was not effective in delivering its energy into the animal. Bullets kill by shock. An exit wound is desired when bowhunting, but not here IMHO.
The energy "wasted" on the exit of a bullet from a game animal is inconsequential, believe me!! If you ever have to track a game animal any distance, you will appreciate that exit hole a lot more. It is strictly conjecture to say that a bullet kills better if it does not exit. I have shot upward of 500 head of game in my lifetime, and it is picking flys*** out of pepper to worry about whether a bullet exits or not. Either way, a well placed decently constructed bullet kills quickly. FWIW, fragmentation is undesirable if penetration through any big bone is necessary. Regards, Eagleye.
I am not worried about the exit wound at all, merely stating the fact that a bullet kills via shock, and if the bullet remains in the animal, that all the energy has been delivered in the form of shock.
I think that this concept of shock created from the passage of a bullet is often misunderstood. If you look at the typical wound from an expanding high velocity rifle bullet, the entry wound diameter is small, matching the bullet diameter up to several inches of penetration (depending on the construction of the bullet and the density of the tissue encountered) then as the bullet rapidly expands, the wound cavity balloons many times the diameter of the bullet, then as the velocity decays and finally becomes subsonic, the wound diameter narrows, matching the expanded diameter of the bullet.
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The shock you refer to effects soft tissue only, and is the area that is crushed by the shock wave that comes off the nose of the expanded, but still supersonic, bullet. Nothing more is gained by a bullet that stays inside the body, but if the bullet exits, that makes the wound cavity longer, it may break more bones, and it will produce a larger blood trail to follow up, should tracking prove necessary. While some folks like a bullet that grenades inside the body cavity, and there is no question that when this works it works well, I prefer a bullet that retains much of it's original weight, delivers straight line penetration, and exits. When hunting there is no guarantee that you will get a broadside shot, and the bullet must overcome a much more difficult passage if the shot is quartering, head on, or straight away.
A soft point bullet with a longer expanding length can result in a larger frontal diameter. The larger the expansion of the nose of the bullet, the larger the wound volume, with the proviso that the bullet remains long enough that it continues to spin around a linear axis thus maintaining stability, and that the expanded diameter is not so excessive that the bullet can loose straight line penetration due to bone and tissue impacting far out from it's center of gravity. It might be argued that such a bullet by necessity is very heavy and velocity is compromised. This is true, but the effect on trajectory over normal hunting ranges is not great, and the greater bullet weight ensures the the bullet with the larger expanded frontal area penetrates as well as the faster bullet with the smaller expanded frontal area, but the wound diameter will be significantly larger even though the impact velocity was perhaps hundreds of fps slower.
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Naturally the construction of the bullet must take into account the density of the target and the impact velocity of the bullet. One does not need as strongly a constructed bullet when shooting deer with a .30/30 as he might when shooting African buffalo with a .378 Weatherby.
Now take that same image you posted and from the entrance wound, draw a cone (which represents the expansion properties of a more frangible bullet. There is more damaged tissue, and a less emphasized exit wound, if any.
The image you show would only apply if you are a believer of hydrostatic shock, as the wound channel is larger than the largest diameter of the bullet. Of course there are some that claim it has been disproven conclusively, and others on the opposite side of the fence.
My goal is to cause as much internal tissue damage as possible, and when a bullet fragments, it increases it's surface area, thus damaging more tissue as the particles separate in a (generally) conical pattern. This rapid deceleration of the projectile, transfer of energy from the fragments to the tissue and the resulting tissue damage is best described as mechanical shock.
But that doesn't mean you should be the guy that brings varmint grenades for moose....
There is a perfect projectile for every application, but the trick is to find the one that does the most applications properly. I found mine. But I also don't use a gun to hunt moose.