Here is some interesting Facts from studies for all to read. To me if you have both energy and holes you have dead animals.
Hydrostatic shock as a factor in selection of ammunition
Various terms are used to refer to the potential for hydrostatic shock effects: energy transfer, temporary cavitation, shock wave, hydrodynamic shock, ballistic pressure wave, etc. A number of ammunition designers and suppliers mention ideas related to hydrostatic shock in their patents and marketing literature: Charlie Kelsey (radially dynamic bullets),[51][52] David Harris,[53] Tom Burczynski (Quik-Shok, Hydra Shok),[54] Bruce McArthur,[55] Federal Cartridge (Hydra Shok),[56] American Ammunition (Quik-Shok),[57] the THV bullet,[58][59] Hornady (Super Shock Tip, SST),[60] Barnes Bullets (Triple Shock),[61] TC Arms (Shock Wave),[62] and Elite Ammunition.[63] One handgun manufacturer has a video showing exploding watermelon heads.[64]
[edit] Ammunition selection for self-defense, military, and law enforcement
In self-defense, military, and law enforcement communities, opinions vary regarding the importance of remote wounding effects in ammunition design and selection. In his book on hostage rescuers, Leroy Thompson discusses the importance of hydrostatic shock in choosing a specific design of .357 Magnum and 9x19mm Parabellum bullets.[65] In “Armed and Female,” Paxton Quigley explains that hydrostatic shock is the real source of “stopping power.”[66] Jim Carmichael, who served as shooting editor for Outdoor life magazine for 25 years, also believes that hydrostatic shock is important to “a more immediate disabling effect” and is a key difference in the performance of .38 Special and .357 Magnum hollow point bullets.[67] In “The search for an effective police handgun,” Allen Bristow describes that police departments recognize the importance of hydrostatic shock when choosing ammunition.[68] A research group at West Point suggests handgun loads with at least 500 ft-lbs of energy and 12 inches of penetration and recommends:[69]
One should not be overly impressed by the propensity for shallow penetrating loads to produce larger pressure waves. Selection criteria should first determine the required penetration depth for the given risk assessment and application, and only use pressure wave magnitude as a selection criterion for loads meeting minimum penetration requirements. Reliable expansion, penetration, feeding, and functioning are all important aspects of load testing and selection. We do not advocate abandoning long-held aspects of the load testing and selection process, but it seems prudent to consider the pressure wave magnitude along with other factors.
A number of law enforcement and military agencies have adopted the 5.7x28mm cartridge, which is reputed to cause considerable hydrostatic shock.[63][70] These agencies include the Navy SEALs,[71] and the Federal Protective Service branch of the ICE.[72][73] In contrast, some defense contractors,[who?] law enforcement analysts,[who?] and military analysts[who?] say that hydrostatic shock is an unimportant factor when selecting cartridges for a particular use[citation needed] because any incapacitating effect it may have on a target is difficult to measure and inconsistent from one individual to the next. This is in contrast to factors such as proper shot placement and massive blood loss which are almost always eventually incapacitating for nearly every individual.[74]
[edit] Ammunition selection for hunting
Hydrostatic shock is commonly considered as a factor in the selection of hunting ammunition. Peter Capstick explains that hydrostatic shock may have value for animals up to the size of whitetail deer, but the ratio of energy transfer (in ft-lbs) to animal weight (in lbs) is an important consideration for larger animals. If the animal’s weight (in lbs) exceeds the bullet’s energy transfer (in ft-lbs), penetration in an undeviating line to a vital organ is a much more important consideration than energy transfer and hydrostatic shock.[75] Jim Carmichael, in contrast, describes evidence that hydrostatic shock can affect animals as large as Cape Buffalo in the results of a carefully controlled study carried out by veterinarians in a buffalo culling operation.
Whereas virtually all of our opinions about knockdown power are based on isolated examples, the data gathered during the culling operation was taken from a number of animals. Even more important, the animals were then examined and dissected in a scientific manner by professionals. Predictably, some of the buffalo dropped where they were shot and some didn't, even though all received near-identical hits in the vital heart-lung area. When the brains of all the buffalo were removed, the researchers discovered that those that had been knocked down instantly had suffered massive rupturing of blood vessels in the brain. The brains of animals that hadn't fallen instantly showed no such damage.
– Jim Carmichael[76]
Dr. Randall Gilbert describes hydrostatic shock as an important factor in bullet performance on whitetail deer, “When it [a bullet] enters a whitetail’s body, huge accompanying shock waves send vast amounts of energy through nearby organs, sending them into arrest or shut down.”[77] Dave Ehrig expresses the view that hydrostatic shock depends on impact velocities above 1100 feet per second.[78] Sid Evans explains the performance of the Nosler Partition bullet and Federal Cartridge Company’s decision to load this bullet in terms of the large tissue cavitation and hydrostatic shock produced from the frontal diameter of the expanded bullet.[79] The North American Hunting Club also suggests big game cartridges that create enough hydrostatic shock to quickly bring animals down.[80]
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