5.56 x 45 (Nato) vs. 223 Remington; The Ongoing Saga

The subject of 223 Remington vs. 5.56×45 (5.56 Nato) is a popular source of discussion.

Probably one of the best blog posts on this subject can be found at http://www.luckygunner.com/labs/5-56-vs-223/

One item this and most of the discussions seem to overlook is headspace.  Since this blog leans more toward gunsmithing subjects, I wanted make sure this subject was discussed.   I often hear from clients that the 5.56 and the 223 differ in headspace.  The truth is, when I checked the various gauge makers they are all working to the same standard.

Why is this important?

Mainly because educating the shooting public minimizes accidents and makes life easier for all concerned.  None of the articles I looked at mentioned headspace.  Most of the chamber dimensions being shared do not include headspace dimensions.  This may be in part because they are so hard to locate for the 5.56 Nato.

Forster Products publishes the data for their 5.56 gauges.  Minimum headspace (Go gauge) is 1.4636” according to their specifications with a tolerance of -.0003”.  With the Maximum (Field gauge) measuring 1.4736”; that’s 10/1000s of an inch longer than the go gauge.  Most No-go gauges would be set .004” to .006”  longer than the Go gauge.  The Pacific Tool & Gauge print shown here uses a Go gauge that measures 1.4636”.

5.56 Nato Print

Look at the Minimum Headspace dimension listed on this print, it is identical to the dimension used on the 223 Remington.

SAAMI specifications for the 223 Remington show a Minimum headspace (Go gauge) of 1.4636” identical to the military spec for the 5.56×45.  The Nato round is not a SAAMI cartridge, so they do not provide prints or specification for it.

My curiosity as to why so many shooters think there is a difference between the gauges for these two, led me to do an Internet search to see what people are reading.  I consider all material on the Internet to be of dubious quality until I can confirm the data through trustworthy sources.  What I found was interesting; you have to dig deep to find anything that pertains to headspace and the 5.56 Nato.

What is easy to locate are drawings which purport to show why the two cartridges are not the same.  The dimensions  they are concerned with mostly have to do with the junction of the body and shoulder plus the shoulder and neck.  In the real would the camming action of the bolt closing would be more than sufficient to deal with the tiny differenced that might exist in the brass.  Frankly there is more variation in tolerances allowed that these drawings account for, in short, it’s all smoke and mirrors.

One Internet source shows the Military gauge .001” longer than is found in the prints mentioned above.  Even if that were the case, that is only 1/5th of the difference between a standard Go and No-go gauge for the 223 Remington.  To be totally clear, it would make NO difference.

Conclusion:  Headspace gauges for the 223 Remington and the 5.56 Nato are identical.  The differences between the cartridges has to do with case wall thickness and how they are loaded.  If you want to shoot either type of ammo in your gun, rechamber it to 223 Wylde.  The Wylde chamber is designed to work safely with both types of ammo.

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Getting Ready for “This Season”

It’s that magical time of year when hunters start saying, “This Season” instead of “Next Season”.

Upgrade, try a new caliber.

Upgrade, try a new caliber.

Across the west every year when the big game draw results become public hunters start to plan for their fall trips.  Once you know the results of the draw it’s time to assemble the gear and goodies you will need for a successful hunting season.

The problem is eternal though, that for most sportsmen we are still fishing, boating, hiking, camping and doing all those summer time activities with family and friends.  It’s difficult to turn your attention to fall plans when you’re so busy having fun in the outdoors.

Doing just one small thing can greatly aid in your fall preparations and takes only a few minutes out of your summer.  Last season either you gun broke or you decided it needed an upgrade before next season.  Well, next season is now this season.  Grab that gun from the safe and get it to the gunsmith now.  You can avoid the seasonal rush and be much more likely to get your job done before the fall hunt is upon you.

Fall is just around the corner

Soon you will be glassing for that buck.

It takes time to get in parts or barrels to upgrade your firearm.  Leave time for the gunsmith to acquire the parts you want.  Many gunsmiths I talk to even offer specials this time of year to encourage bringing projects in early.

So drop your gun off now, so you can get back out there and enjoy the summer.  Then when fall hits you will have that new barrel, scope, stock, trigger or whatever you need to be more successful on you hunt this fall.

Now go have some fun!

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Time to Register for Firearms Technology Program

Deadline for Fall of 2015 Firearms Technology Certificate is coming up the first of May.  This program is designed to help machinists gain employment skills for the firearms manufacturing field.  The courses are designed specifically to give the student a mechanical and ballistic understanding of firearms so that they understand how the parts they are making fit into the firearm system.  Issue like heads-pace and manufacturing tolerances are a major focus.

Click here to go to the College web site for more info.

Here is a small news item on the program.

http://www.kaj18.com/story/28871942/fvcc-teaching-firearm-technology-class-answering-job-demand

For more information, contact Will Richards at 756-4862 or wrichards@fvcc.edu.

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Engraving Class for Beginners…

So you like guns and you have always wanted to try engraving.  Here is a chance to learn from one of the best.DianeScalese100

Basic hand Engraving,  Instructed by:  Diane Scalese

One week long non-credit class  Monday-Friday, May 18-22

 This course is designed for the beginner engraver or for anyone who would like to review the basics of engraving in steel.  Starting with proper tool preparation, learn the basic steps to single point engraving.  Topics include:

*Proper tool preparation                  *Graver shaping and sharpening

*Shading                                                    *Background treatments

*Metal inlays                                            *Business practices

*Transferring patterns                         *Basic lettering

*Basic scroll design and discussion of the most popular styles

Engrave on steel practice plates.  You will need to supply your own equipment.  The course is designed for using air-assisted equipment and power hones.

Instructor, Diane Scalese is a full-time engraver and has been engraving trophy belt buckles, saddle silver, bits, spurs, jewelry and firearms for nearly 30 years.  She was named Engraver of the Year in 2003 by the Academy of Western Artists.  She resides in Big Sandy, Montana.

sweetw_frgr_spur Monday-Friday                     May 18-22                 8 a.m.-5 p.m.               $495      

For more information or to register,

call the Continuing Education Center @ FVCC (406) 756-3832

This class is part of the NRA Short Term Gunsmithing Program.  For a full listing of classes for 2015 click here.

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28 Nosler Announced at Shot Show 2015

During the first day of SHOT Show 2015 I swung by Nosler’s Booth.  GEDSC DIGITAL CAMERA

And what to my wundering eyes did appear, the 28 Nosler. That’s right Nosler is adding to their line-up.  The 28 and 26 Nosler utilize the same headspace gauges.

Talking to Mike Lake, who did the design work on these cartridges for Nosler, he stated that everything from 26 to 9.3mm have been registered and approved by SAAMI.  For now, Nosler is only bringing the 28 Nosler to market.

When asked why Nosler took all the designs to SAMMI now Mike said, “We were aware of the wildcats that have appeared on the 26 Nosler case.  So, it just made sense for us to get the dimensions for all the calibers completed and registered with SAAMI.”

The 28 Nosler according to Nosler’s new catalog will push a 160 grain bullet at 3300 feet per second (fps).  A 175 grain bullet will launch at 3125 fps.  In case you were wondering that is faster than the 7mm RUM with less powder.  How is that possible?  Pretty simple really, the 7mm RUM is very over bore, in other words it has too much case capacity for the 7mm bore.

Last years introduction of the 26 Nosler was met with great enthusiasm by shooters.  There is every reason to believe that even more shooters will like the 28 Nosler, 7mm cartridges in general are more popular the 6.5mm in the U.S.  Look for this to be a much discussed cartridge in 2015.

I talked to Pacific Tool & Gauge and 4D Reamer Rentals LTD.  PTG says the 28 is in production already and 4D placed an order for it as soon as the cartridge was announced.  4D also ordered reamers for all the Nosler designs registered with SAAMI.

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New Chamber Reamers for 2015

26 Nosler

Popular new Cartridge for 2014.

Shot Show is just a few weeks away, Fred Zeglin of 4D Reamer Rentals LTD heads to Shot each year to make sure he has all the new caliber offerings for his clients.  Last year is was the 26 Nosler and the 25-45 Sharps (SRC).

So far the information leaks about new cartridges for 2015 have been controlled, no sneak peaks at what is coming from the factories.  However, Fred says there are new wildcats getting some attention.

6mm Creedmoor has already been added to 4D’s list of reamers you can rent.  It looks like wildcats on the 26 Nosler case are what will be hot in 2015.  Those calibers will include:

  •  25 Nosler
  • 27 Nosler
  • 28 Nosler
  • 30 Nosler
  • 33 Nosler
  • 35 Nosler
  • 375 Nosler
  • 416 Nosler

All of these wildcats based on the 26 Nosler case will use the same headspace gauges, they are simply necked up, or in the case of the 25 necked down versions of the parent case.

6mm Grendel and 6.8mm Grendel are making waves too.  Both of these are based on the popular 6.5 Grendel.  If you’re a bolt action fan these cartridge are available in a configuration better suited to a bolt gun as the BPC (Borden Palmisano Cartridge) series, all using the same gauges.

Look for 4D Reamer Rentals to add all these reamers and more in 2015.

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Remington Agrees to Replace Triggers

Remington has manufactured millions of rifles on the basic Remington 700 pattern over the years (about 7.85 million by one report).  At least two class action law suits are included in this settlement filed in Federal Court.  Settlement announce December 5th, 2014.

The settlement covers the Model 700, Seven, Sportsman 78, 673, 710, 715, 770, 600, 660, XP-100, 721, 722 and 725.  Any person who owns one of these rifles may if they so choose have the trigger replaced by Remington.

In Remington’s Quarterly report to investors in September of 2014, Remington revealed it had set aside $29.7 million in what the company called a “Model 700 settlement reserve.”

Watch the CNBC report: Remington 700 triggers to be replaced.

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Audio Report: Firearms Technologies Certificate program.

Katrin Frye of Montana Public Radio reported on both the NRA Short Term Gunsmith program and the new full time college credit certificate available at FVCC in Kalispell, MT.   The link below will take you direct to the audio file.

http://cpa.ds.npr.org/kufm/audio/2014/07/FVCC_Firearms_1.mp3

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New Approach to Firearms Education

Flathead Valley Community College will launch a new two-semester evening Firearms Technologies Certificate starting this fall.  The 27-credit program will feature curriculum developed to support the growing firearms industry in the Flathead Valley in Montana as well as across the country.

One of only a few colleges in the nation to offer firearms related programs. FVCC has taken a unique approach, developing the program as an enhancement to its existing industrial machine technology program introduced last year under the Department of Labor “Amplifying Montana’s Advanced Manufacturing and Innovation Industry” grant (#TC-23760-12-60-A-30).  This approach will make FVCC the only school that focuses on manufacture of firearms and related parts.

The new program will provide students the opportunity to incorporate advanced machining skills with an understanding of firearms operational systems. Courses are tailored to emphasize the manufacturing of firearm components.

Fred Zeglin, curriculum coordinator for the program, developed the courses under the guidance and input from local firearms manufacturers.  “Manufacturers say they are seeking trained machinists who understand firearms.  Classes have been designed to build understanding of a wide variety of firearms and the way that they function.” said Zeglin.

Emphasis will be placed upon the completion of several gunsmithing projects involving blueprints and schematics using a combination of both hand and machine tools. This program will provide a clear understanding of firearms design and function, enabling graduates to assist with design implementation or tolerance issues in manufacturing environments.

The program will be held in the evenings with labs during the daytime on Friday and Saturday. Course topics will include firearms introduction and safety; manual mill and lathe systems; bench metal techniques; firearms theory and firearms repair; machine tools for gunsmiths; and precision rifle building.  This selection of courses are designed to increase the marketable skills of the students in the manufacturing realm.

The program will be marketed nationwide bringing focus to the local industry.  Prospective students must apply both to the program and for admission to FVCC. Program applications are due August 1 at 4 p.m. Applications are available online at http://www.fvcc.edu/firearms or in the Admissions Office in Blake Hall on the FVCC Kalispell campus. For more information, contact Jori Bullemer at 756-3905 or jbullemer@fvcc.edu or Will Richards at 756-4862 or wrichards@fvcc.edu.

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NRA Short Term Gunsmithing Program, Kalispell, MT

FVCC LogoFlathead Valley Community College is hosting the NRA Short Term Gunsmithing Program again this summer.  2014 will be the third year for this program at FVCC, the program has grown in attendance each year and this year should be no different.  New classes are being offered so if you attended or looked at the offerings in the past there is probably something new for you this year.

Quality instruction is the name of the game at FVCC.  The instructors for the Short Term Program are all top notch professionals who are well respected in the gunsmithing community.  For instance, Lee Helgeland is one of the premier stockmakers in the nation.   He has spent 30 years perfecting his craft and is a member of the American Custom Gunmakers Guild.  Another instructor new to the Kalispell program this year, Sam Hatfield, certified NRA and Sig Academy Master Instructor.  Sam was head gunsmith at Green Mountain Guns in Lakewood, Colorado and served as a member of the United States Army Marksmanship Unit as a gunsmith. Sam now owns Hatfields Gunsmithing Inc. in Manassas, VA.

To learn more about the instructors for this summers program check out this link:

http://www.fvcc.edu/continuing-education/gunsmithing-program/instructors.html

New classes this year include “S&W Revolver Action Work”, “1911 Handgun AMU Accuracy Rebuilding” and “Accurate Reloading for the Hunter”.  Perennial favorites like “Customizing AR-15 or AR-10” and “Introduction to Checkering” will still be on the schedule.

If you have ever wanted to learn more about gunsmithing but can’t take of the two years necessary for most schools, the NRA Short Term Gunsmithing Program is a great alternative.  Classes normally run or one week, Monday through Friday.  They are intensive hands on classes with small numbers of students, so you have great access to the instructor. This unique learning opportunity is set up as part of the Continuing Education Department of the College and the courses are non-credit.

If cost is a concern I noticed that the College has some Scholarships provided by NRA donations, details at this link:

http://www.fvcc.edu/continuing-education/gunsmithing-program.html

An electronic copy of the brochure for these classes is available at this link:

http://www.fvcc.edu/wp-content/uploads/2013/03/Gunsmithing-Course-Brochure.pdf?2ebeaa

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