Monday, August 4, 2014

CWP, 4 August 2014 A.D.

Greetings Concealed Weapons Permittees,
     For those of you new to this emailing list,
this is an irregular mailing for students and
friends of DefensivePistocraft.com geared
toward civilian concealed carry and self-defense.

***** Mindset *****

"Why training police merely to qualify isn’t enough"
http://www.policeone.com/Officer-Safety/articles/7401454-Why-training-police-merely-to-qualify-isn-t-enough/?utm_source=newsletter&utm_medium=email&utm_campaign=Exclusive_1&nlid=7401062
Excerpt:  “The body will not go where the mind has never been.”
     So, you have to mentally rehearse.
You have to visualize.  You have to do
IDPA matches.  You have to take classes.

"5 Tips For New Concealed Carriers" by Tom McHale
http://www.nssfblog.com/firstshotsnews/5-tips-for-new-concealed-carriers/

***** Training *****

"10 common mistakes in self-defense firearms training"
by Shannon Thrasher
http://www.policeone.com/the-tacticalist/articles/7391346-10-common-mistakes-in-self-defense-firearms-training/
Excerpts:
"After you get some good quality
professional instruction, go out
and get some more - from someone else."
"Just like a seat belt that must be worn
on all trips — since we can't predict a car
crash — your self-defense gun should be
carried at all times because we can't
predict when you will be attacked."

Trigger control drill. 
https://www.youtube.com/watch?v=NxyTFzgWjhk
     Don't fire the shot.
Touch the trigger, take the slack out of the trigger,
smoothly increase pressure while holding the
sights on the target,
press, press, press, press, ... BANG!
Strive for the surprise break, to defeat your
autonomic nervous system, to avoid anticipating
the recoil and pushing against it.
Trap the trigger to the rear.
Get the sights back on the target.  (This is the
end of the shot process.)
     Reset the trigger. (Release the trigger
just far enough to feel or hear the click.
Your trigger finger is always in contact with
the trigger.  Moving the trigger any further
than the reset wastes time.)
Take the slack out of the trigger.
(Yes, there is slack after the reset. 
Slow down until you can feel it.)
Press, press, press, press, ... BANG!
Trap the trigger to the rear.
Sights back on target.
Reset.
Slack out.
Press.
...
     Yes, it is a long complex process.  But,
that's the difference between a 2% probability
of hitting the target and a 100% probability. 
Also, the process gets very fast with practice
(2000 repetitions). 
     If you don't practice trigger control,
you won't do it, and you'll miss.

"Shooting into and out of a vehicle"
by Shannon Thrasher
http://www.policeone.com/the-tacticalist/videos/7398418-Shooting-into-and-out-of-a-vehicle/
     A car door is not cover.
     Notice that he shot the sidewall of the tire,
which is effective.  Shooting through the tread
and steel belts of a tire is not effective. (Because
tires are designed not to deflate when punctured
by running over a nail.)
     An engine block is cover for pistol bullets,
but not for .30 caliber rifle bullets.  I've
seen .30-06 bullets go through an engine block.

***** Technical *****
(very technical, math intense, for you nerds)

Bottom line up front:
     Ya, I know the papers have experimental design
and modeling problems, but the point is, bullets
wobble.  So, you can't predict at what angle the bullet
will enter the target.  The terminal ballistics
are highly dependent on the angle of entry of the
bullet.  So, there is, and will always be, a large
variation in the effect of a bullet (terminal ballistic).

Overview article for the muggle.
http://www.thefirearmblog.com/blog/2014/07/28/weekly-dtic-fleet-yaw-problem-improving-rifle-effectiveness/

"Small Caliber Lethality ..." by Maj. Dean and Maj. LaFontaine.
http://www.dtic.mil/dtic/tr/fulltext/u2/a519801.pdf
Excerpt: 
     "Shot placement trumps all other variables"
     "Yaw is not instability; it occurs naturally
in all spin-stabilized projectiles."
[The authors use the term "yaw", but they mean
precession and nutation due to a force (air resistance)
on a spinning object in free fall (not the same as
an inertial frame of reference).  Free fall would
be in a gravitational field.  Inertial frame of
reference would be in space away from any massive
objects.]

"Small-Caliber Projectile ..." by Ehlers, Guidos, and Webb.
http://www.dtic.mil/dtic/tr/fulltext/u2/a458409.pdf
[Assuming the projectile is moving forward;
Pitch is rotation about the left-right axis,
Yaw is rotation about the up-down axis, and
Roll is rotation about the forward-backward axis.]

***** Gear *****

Brownell's has a great section on their
web site called "Learn",
http://www.brownells.com/.aspx/GunTech/default.aspx

***** News (as opposed to propaganda) *****

Notice that the doctor in this story violated
the gun free zone laws of Pennsylvania. 
But, I'm sure he feels it's better to be alive.
http://www.cbsnews.com/news/doctor-had-gun-wounded-hospital-shooter-pennsylvania-prosecutor-says/

Amazing for the Huffington Post.
http://www.huffingtonpost.com/dennis-santiago/guns-in-america-why-i-thi_b_5628403.html?ncid=txtlnkusaolp00000592
     The U.S. Supreme Court said that the
2nd Amendment gives citizens the right to
carry guns outside the home, and the lower
courts are ruling accordingly; as they should.

***** Sort of related *****

I always loved these sorts of puzzles.
http://www.thefirearmblog.com/blog/2014/07/28/trigger-lock-taken-extreme/

Cheers,
Jon

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