July 19th, 2019

Learn How the Human Ear Works — And Protect Your Hearing

hearing protection inner ear anatomy science hearing medical electronic muffs earplugs

hearing protectionAll shooters, even rimfire enthusiasts, should always wear ear protection when at the range. A typical rifle gunshot is very loud — in the region of 140 to 170 decibels (the pain threshold is 130-140 db). Without ear protection, you can permanently damage your hearing during a single shooting session. We all know older shooters who are partially deaf, or who suffer from Tinnitus, because they didn’t use earplugs or muffs when they were younger.

How Humans Hear Sounds — Amazing Video Reveals All
The human sense of hearing involves multiple delicate internal membranes, bones, organs, and nerves. Shooters understand the importance of protecting their hearing, but they may not understand the bio-mechanics of human hearing. We hear sounds through Auditory Transduction. Sound waves vibrate the ear drum (tympanic membrane), but that is only the beginning. These vibrations are passed along via tiny rocker-arm-like bones to be “processed” in a spiral chamber, the cochlea.

This remarkable VIDEO explains how humans hear sounds. We strongly recommend you take the time to watch and learn. The hearing you save may be your own!

Click Speaker Icon to turn on the video’s soundtrack.

Vibrations moving through the cochlea are separated into frequencies and then sent as neural messages to the brain. It is an astonishingly complex process, one that truly seems miraculous when you examine the bio-engineering involved. In the Video above, the process of human Auditory Transduction is explained and illustrated with 3D animation. You really should watch this amazing video. By the end you will have a new-found appreciation for your ability to hear.

hearing protection inner ear anatomy science hearing medical electronic muffs earplugs

Every shooter should own a pair of Electronic muffs, even if you prefer shooting with earplugs and/or standard muffs. Electronic muffs are great when you are spotting for other shooters or are working near the firing line. They let you hear ordinary conversations while still providing vital hearing protection. You can also wear ear-plugs under muffs for extra sound attenuation.

shooting ear protection nrr 33 ear plugs howard leightPlugs PLUS Ear-Muffs — The Benefits of “Doubling-Up” Your Hearing Protection
According to OHS Online: “The combined attenuation of an ear plug and an ear muff is not simply the algebraic sum of the performance of each individual protector. This is due to an acoustic and vibratory interaction between the ear muff and the ear plug that causes them to behave together as a system rather than as independent hearing protectors.

Generally speaking, when you combine two hearing protectors, ear muffs over ear plugs, you can expect an increase [in noise reduction] of between 3 and 10 dB over the higher-performing hearing protector. OSHA [now advises] 5 dB as the [typical] benefit offered by combining hearing protectors.” Source: OHSonline.com

Ear diagram courtesy Siemens Medical Solutions.

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July 19th, 2019

Krieger Pre-Fits for Ruger Precision Rifle Improve RPR Accuracy

Krieger Barrels Ruger Precision Rifles Pre-Fit Drop-In Chambered barrel RPR

Own a Ruger Precision Rifle (RPR)? Looking for the single best hardware upgrade that will improve inherent accuracy and shot-to-shot consistency? Here’s your answer. Krieger Barrels is now producing Pre-Fit barrels for the RPR in seven popular chamberings: 6XC, 6mm Creedmoor, 6.5 Creedmoor, .243 Win, 6.5 PRC, .308 Winchester, and .300 Win Mag. These $550.00 “Drop-In Ready” barrels come finish-chambered and threaded to fit the Ruger action. The Ruger barrel attachment system allows correct headspace with a pre-chambered barrel. Krieger explains: “Thanks to Ruger’s proprietary barrel nut design, a competent gunsmith will be able to swap out your barrel using an AR15 barrel wrench and proper headspace gauges.”

Krieger Barrels Ruger Precision Rifles Pre-Fit Drop-In Chambered barrel RPR

Kreiger’s 6.5 Creedmoor RPR barrel is an 1:8″-twist with 26″ finished length, 0.750″ at muzzle. The .308 Win RPR barrel is a 1:10″-twist with 24″ finished length, also 0.750″ at muzzle. Both these Krieger RPR Pre-Fits feature muzzles with factory-spec thread so you can re-install the factory muzzle brake.

Krieger Barrels Ruger Precision Rifles Pre-Fit Drop-In Chambered barrel RPR

Krieger Barrels Ruger Precision Rifles Pre-Fit Drop-In Chambered barrel RPR

Product Tip from EdLongrange. We welcome reader submissions.
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July 19th, 2019

Heatstroke Open NRL Match This Weekend in Oklahoma

heatstroke open oklahoma
Here’s our friend Jim See, who won the 2015 Heatstroke Open, topping 120 other shooters.

The 2019 Heatstroke Open will be held July 19-21 near Camargo in NW Oklahoma. This major PRS match should attract 120+ competitors. The event schedule includes check-in and sight-in beginning at noon on Friday, July 19, followed by side matches. The two-day match begins on Saturday and concludes at the end of the shooting session on Sunday. An awards ceremony in town will conclude the event.

The Heatstroke Open is one of the longest-running Practical Precision matches in the country. This match venue is a natural terrain field with just a few man-made props. Many targets are tough while other are more-than-generous. Stage time-limits are enough to get all rounds off on each stage. No matter what the shooter’s experience level, this match should be challenging and rewarding. But note, wind reading is critical — conditions have been known to be pretty brutal. Here are three videos covering the last three Heatstroke Open Events in Oklahoma:

2017 Heatstroke Open

2016 Heatstroke Open

2015 Heatstroke Open

McMillan — Heatstroke Open Key Sponsor
McMillan Fiberglass Stocks is sponsoring this year’s Heatstroke Open as well as other events on the National Rifle League’s event roster. Through sponsorship, McMillan works to promote the NRL’s mission to encourage the growth and education of precision rifle shooting. CLICK HERE for complete listing of 2019 NRL-sanctioned matches.

Remaining Major 2019 NRL matches, and Match Directors:
Heatstroke Open – Camargo, Oklahoma, July 20-21, 2019 | Matt Clem, B.J. Bailey
Rock Lake NRL Steel Challenge – Cheney, Washington. Aug. 31-Sept. 1, 2019 | Doug Glorfield
Monster Lake Mayhem – Cody, Wyoming, September 27-28, 2019 | Phillip Velayo, Caylen Wojcik
West Coast Showdown – Pala, California, October 19-20, 2019 | Jorge Ortiz, Scott Satterlee
2019 NRL Championship – Navasota, Texas December 6 – 8, 2019 | Dave Ferguson, Prentice Wink

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