Hi folks, I have a question for the experts: what is the threshold for temporary cavitation wounding? If it makes it easier, specifically with a bullet with a .355 diameter in the 65-90gr range?
To give a little context, I was reading this thread on M4carbine which indicates that one of the biggest reasons traditional rifle rounds have much more dramatic wounding in many cases is because of "temporal cavitation wounding" in which there is enough energy and surface area that the temp cavity is moving at velocities which induce actual wounds (first assumption this is predicated on). The consensus seems to be that velocity is more important that mass or size, although those do matter. The other consensus seems to be that once you get rifle projectiles up around 1800-2000fps, this effect starts in earnest. One guy then pipes up that there are some pistol rounds that match or are close in terms of velocity to 5.56 from 10-12in barrels, with similar kinetic energy as well. This reminded me of another thread I'd seen recently on Glock Talk where a guy has revived 38 Casull and is pushing light bullets very fast.
In sum we have a .357 SIG pushing 65gr 9mm bullets at over 2100fps, a 9x25 Dillon pushing 80gr TACXP's at over 2100fps, and .38 Casull pushing 90gr XTPs at over 2400fps! Which if any of these might be fully into the "rifle" wounding category?
And the followup: how temp cavity wounding scales with bullet diameter and KE as well as velocity in general? I realize that is asking a lot broader of a question so I narrowed the question above. Thanks!