NitroXAdministrator
(.700 member)
06/09/18 07:43 PM
Re: 7mm 140 gr Hydro-Solid .284" - Who has used these?

A link to the Woodleigh page on the bullets.

http://www.woodleighbullets.com.au/products/hydrostatically-stabilised



Quote:



The depressed nose at the leading edge of the bullet 'cores' the medium (flesh) through which it is travelling which then creates a 'pressure ring'. The coring and pressure ring balance each other out to stabilise the bullet in the direction of travel. If the bullet hits hard bone the flesh core dissipates but immediately reforms and the balance between it and the pressure ring restabilises to redirect the bullet in the original direction of travel.

Additional benefits of this design are that the pressure ring creates a devastating wound channel and massive hydraulic shock transfer. The bullet actually travels in a low pressure cavitation bubble which aids in bullet stabilisation and greatly increases penetration due to significant reductions in frictional forces acting on the bullet (ref Fig. 1).





Can't see why the "shape" causes the effect over any other eg round nose bullet shape, as the computer graphic suggests.






Monometal Expanding


Hydrostatic


Full Metal Jacket

Three examples, one of each is not a representative sample size. Assuming the examples shown are not the 'best' examples to illustrate the desired result. Not independent.

What calibre or calibres were used? What impact velocity of each round? Were they all relatively identical? What was the bullet shape of the shown "FMJ" sample? 'Everyone' knows the military spitzer FMJ bullet shape creates extremely narrow wound channels.

Quote:

As this bullet does not rely on expansion for its killing effect, it side steps the problem of erratic expansion suffered by some other types of expanding monometal bullets.




Well it doesn't expand.

***

Ha ha, to give some ground, I have in the past 'accepted' the design may give a better wound channel than a conventional FMJ. But the laws of physics would also claim if it leaves a wider wound channel, the increased friction may also indicated lesser penetration, especially when considering the design and shape of a hydro. Claims the wound channel is better than a conventional well constructed expanding SP leave me shaking my head. In the end physics is not "brand" dependent or variable.



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