Monday, September 2, 2019

A Monday Medley of Videos (Sept. 2, 2019)

As I've mentioned before, this channel has done ballistic tests of many different helmets. This particular helmet stopped all of the handgun rounds tested, including 7.62×25mm Tokarev, which makes it one of the best helmets out there. Nevertheless, as you should expect, it didn't stop rifle rounds.


"Why Your AR-15 Shoots Low"--Lucky Gunner Ammo (7 min.)
A discussion of mechanical offset, and why it will cause you to shoot low at shorter ranges.


As of this writing, there are several surplus firearms sellers selling these in the $225 to $260 range.


Rifles are not enough. However, I wonder why no tank traps or physical barriers.





Remember this ad? "Trunk Monkey Bridge | Suburban Auto Group" (30 sec.)






I wasn't aware of the extent of the ruins found in the Sahara, but it wasn't surprising since until some 5,000 to 6,000 years ago, the region was wet with many rivers and at least two large lakes/inland seas. One of these, Lake Mega Chad, is estimated to have covered 139,000 sq miles, until it abruptly dried up. To put this in context, as to it size, all of the Great Lakes in the United States only cover 94,250 mi². In what is modern day Libya was Lake Megafezzan which apparently dried up about 3,000 years ago. It may have been as large as 58,000 mi². North Africa cycles between wet and dry periodsAnd the Darfur region of Africa may also have contained a large freshwater lake when the Sahara was wetter.The most significant factor behind the wet/dry cycle is believed to be the  precession of the equinoxes (the slight wobble in the Earth's rotation over thousands of years).

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Weekend Reading -- A New Weekend Knowledge Dump

Greg Ellifritz has posted a new Weekend Knowledge Dump at his Active Response Training blog . Before I discuss some of his links, I want to ...