Archive for March, 2012

Decibels from Gunpowder & Tinnitus Prevention

March 30, 2012

Executive summary:

  1. Hearing loss is a significant problem in the shooting sports
  2. Double up with ear plugs and muffs
  3. Get the highest noise reduction rating (NRR) rating you can that’s comfortable. NRR 33 muffs and ear plugs are available. A NRR difference of 6 means double the measurable protection.
  4. Ear plugs must be rolled very thin before inserted and allowed to expand for a tight seal or they won’t work. Skull screws are the exception to this rule.
  5. Avoid ported barrels and brakes. These dramatically increase the sound levels.
  6. Indoor shooting ranges magnify sound levels
  7. Spoggles (safety googles w/ straps) are good for your ears, Traditional temple arms break the seal on ear muffs
  8. Suppressors are the only tool that will bring firearm noises below the OSHA maximum permissible level of 115 decibels which has a federally regulated maximum time of only 15 minutes.

Supporting Data & Analysis:

According to Dr. William Clark, Ph.D. senior research scientist in charge of the NOISE LABORATORY at the Central Institute for the Deaf in St. Louis, the damage caused by one shot from a .357 magnum pistol, which can expose a shooter to 165 dB for 2msec, is equivalent to over 40 hours in a noisy workplace. Dr. Krammer, Ph.D., Ball State University, Muncie, Indiana has documented the following pressure levels.1


20 Gauge 28″ barrel 152.50dB
20 Gauge 22″ barrel 154.75dB
12 Gauge 28″ barrel 151.50dB
12 Gauge 26″ barrel 156.10dB
12 Gauge 18″ barrel 161.50dB


.22LR (in a pistol) 152 dB1
9mm 159.8 dB
.40 ????
.45 ACP 157.0 dB
.357 Magnum 164.3 dB
.38 Special 156.3 dB


.30-06 158.5dB
.30-06 163.2dB
.223, 55GR. Commercial load 18″ barrel 155.5db
.375 18″ barrel with muzzle brake 170 dB

OSHA’s regulation of industrial noise exposure

85-90dB 8 hours Lawn mower, Disco dance music, Shop tools,
Truck traffic, Noisy restaurant
100dB 2 hours Pneumatic drill, Chainsaw
110 dB Woodworking shop
115dB 15 minutes Sandblasting

The best hearing protection:

Cheap Ear Muffs – 33 NRR!

Safe (aware of surroundings) ear muffs – MAKE SURE THEY ARE 33 NRR!

Ear muff friendly safety glasses

The elastic band ensures ear muffs have a tight seal.

  • Uvex Spoggles
  • WileyX
  • 3M Enhanced Maxim 2 x 2 Goggles

Don’t believe the above? Sound Level Meters available via Amazon.

Who Caused the 2008 Economic Crisis

March 7, 2012

Also known as the 2nd Great Contraction….

Jeff Miron @ Harvard From 2:03 on…

“The 3rd myth is that capitalism was responsible for the recent financial crisis and the recession. That gain is almost exactly oposite of what is true. First of all, Nobody who is being intellectually honest thinks we had unbridaled serious capitalism before the economic crisis hit, before the subprime buildup occurred, before we had all the housing problems. We had enormous government interventions that subsidized risk. Enormous government interventions that encouraged over investment in housing. If one was going to draw any conclusions it seems to suggest much more clearly that interfering with capitalism generates financial crisis generates recessions. Because what we experienced was directly related to the incentives for excessive risk taking, incentives for over investment in housing that were created by government.

The private sector responded to those incentives so of course the the private sector can not be completely be absolved of involved, but as for causing it was the bad policies that caused it not what the private sector or capitalism did on it’s own.

Most importantly whenever government bail out people who took excessive risk they encourage more of that in the future. And we unfortunately went a huge way in that direction by the tarp and the federal reserve policies which helped Wall Street and all the risk takers not have to pay the true price for all the excessive risk taking they engaged in.


Pre-Debate Poll Results
42% For | 30% Against | 28%
Post Debate Poll Results
60% For | 31% Against | 9%

Niall Ferguson @ Harvard

to do…..

(dictating work is in progress) Ladies and gentlement … NOthing would be easier than to blame everything on the banksers. Compensation was 72 million dollars the year before his firm collapsed … never to be seen again. Not only were the bankers greedy .. we would agree… they were also incompetent. But I and my colleges …. but we blame the politicians more. Who was playing the music. It’s so easy to heap approbriam on wallstreet now. That’s exactly what the politicians do. Only yesterday he was denouncing the wrecklessness and greed. FDR in his inaugural address he scorned. Ladies and gentelemnt you have to ask yourself. Could it just possibly be that they are trying to divert our intentions. Role of 4 institutions and their locations

1st federal reserve board allow housing bubble inflate and burst. Fed cut federal funds rate 6.5% to 1%. In that time house price inflation rose from 7% to 17% and stayed above 15% right about 2006. Ben Bernacke claimed this as the great moderation. yest that

2nd institution was the securities and exchange commision. Leverage 12:1 to 20-30:1 and that was a conscous decision by the SEC. The location 100 F street north west washington D.C..

3rd suspect was Congress. They failed to supervise fannie mae and freddie mac. Those two essential institutions that underpinned. Core capital 83 billion and supported 5.2 trillion dollars. Leveraged 65:1. Location of congress is capital hill washington D.C.

Location of the white house. You know the white house played an extremely important role in creating the subprime mortgage disaster. “We want everyone in america to own their own home” declared President George W. Bush. in October of 2002 Everybody in America. He challenged lenders to create 5.5 million new minority home owners by the end of the decade. He assigned the american dream down payment act in 2003. No presidental pressure, no subprime debacal. Washington sold itself to wallstreet and I fear is very much in hock to it.

John Steele Gordon

to do…..

Nouriel Roubini @ NY Stern

to do…..

Raghuram Rajan @ Chicago Booth

sent a clear message to bankers: “Don’t bother storing cash or marketable assets for a rainy day; we will be there to help you.” Not only did the Fed reduce the profitability of taking precautions, but it implicitly encouraged bankers to borrow short-term while making long-term loans, confident the Fed would be there if funding dried up. Leverage built up throughout the system.


Walter Bagehot, was fond of saying, “John Bull can stand many things but he can’t stand 2 percent.” Similarly, John Doe cannot stand interest rates near zero, and when the Fed pushes short rates very low, especially when deflation is not a clear and present danger but just a possibility, savers move to holding riskier assets, pushing all manner of risk premiums down and prices up.


Finally, equity markets were not entirely unaware of the risks. From the second quarter of 2005 to the second quarter of 2007, the two-year implied volatility of S&P 500 options prices—the market’s expectations of the volatility of share prices two years ahead—was 30 to 40 percent higher than the short-term onemonth volatility.23 This figure suggests that the market expected the seeming calm would end, even though the high level of the market indicated it did not place a high probability on events turning out badly for shareholders. But this is precisely how we would expect the market to behave if it believed the banks were taking on subsidized tail risk.


bet this offered employees was known variously as the Acapulco Play, IBG (I’ll be gone if it doesn’t work), and, in Chicago, the O’Hare Option (buy a ticket departing from O’Hare International Airport: if the strategy fails, use it; if the strategy succeeds, tear up the ticket and return to the office).

Rajan, Raghuram G. (2011-08-28). Fault Lines: How Hidden Fractures Still Threaten the World Economy (New in Paper) (Kindle Locations 3410-3412). Princeton University Press. Kindle Edition.

Who Caused The Great Depression

March 7, 2012

Myth #1: “Hoover was a do nothing president”
Asset value & wage price controls
Myth #2: “The New Deal ended the Depression”
Great Britain over by 1933 enjoyed very rapid growth 1931 onwards. In the United States the Great Depression not only goes on for a decade but it actually gets worse. 1937 unemployment was just as high in 1932 but we had the added burden of
Myth #3: WWII ended the Depression

Robert Higgs shows that the great depression didn’t end 1947 or 1948 and the war merely conceals the low production levels that occurred in the United States.

To Do: Quote Thomas Sowell, Milton Friedman, Ben Bernacke, etc.