March 13th, 2020

NRA Cancels 2020 Annual Meetings & Exhibits in Nashville TN

NRA Annual Meetings exhibits nashville tennessee tn cancellation cancel

Due to public health concerns related to COVID-19, the Coronavirus, the National Rifle Association (NRA) has cancelled the April 2020 NRA Annual Meetings and Exhibits. A new, rescheduled event date has not been announced. The NRA event was originally slated for April 16-19 in Nashville, Tennessee.

In cancelling the 2020 NRA Annual Meeting, the NRA issued this statement on Friday, March 13th:

NRA Annual Meeting Cancelled

With our 149th Annual Meeting scheduled for next month in Nashville, we realize many NRA members and meeting guests have questions about the coronavirus (COVID-19) and the potential impact on our convention.

We have been closely monitoring updates from the Centers for Disease Control and Prevention and Tennessee Department of Health. In fact, earlier today, a State of Emergency was declared in Tennessee.

Therefore, we have reluctantly decided to cancel this year’s NRA Annual Meeting, planned for April 16 – 19 in Nashville. This applies to all events and scheduled programs, including the NRA-ILA Forum. We sincerely regret the need for this action, particularly for our many loyal members who join us for this annual celebration of the NRA and our constitutional freedoms. Details regarding a rescheduled NRA Members’ Meeting will be forthcoming.

Under the direction of NRA President Carolyn Meadows, the NRA Board of Directors is working with the Office of the Secretary in relation to board elections, meetings, and the like.

Please know that we did not reach this decision lightly. We were ultimately guided by our responsibility to help ensure the safety and well-being of our NRA members, guests, and surrounding community. Please coordinate directly with any hotels, airlines or others who have assisted with your travel arrangements. Most companies have announced plans to accommodate travelers dealing with event cancellations.

Please visit NRAAM.org for additional news and information regarding NRA activities. Thank you for your understanding and continued support.

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March 13th, 2020

Cartridge Base to Ogive (CBTO) Length — Factors to Consider

chamber length loading berger bullets
Here are two different bullet types, seated to the same CBTO length, but different COAL. Note the shiny scratches on the bullets made by the comparator tool which indicates a point on the bullet ogive near where the ogive will engage the rifling.

Berger Bullets COAL length cartridgeEffects Of Cartridge Over All Length (COAL) And Cartridge Base To Ogive (CBTO) – Part 2
by Bryan Litz for Berger Bullets.
Part One of this series focused on the importance of COAL in terms of SAAMI standards, magazine lengths, seating depths, and pressure levels. Another measure of length for loaded ammunition is highly important to precision, namely Cartridge Base to Bullet Ogive Length (CBTO).

Figure 2. Chamber throat geometry showing the bullet jump to the rifling or lands.
chamber length loading berger bullets

Look at Figure 2. Suppose the bullet was seated out of the case to the point where the base of the bullet’s nose (ogive) just contacted the beginning of the riflings (the lands) when the bolt was closed. This bullet seating configuration is referred to as touching the lands, or touching the riflings and is a very important measurement to understand for precision hand-loading. Due to the complex dynamics of internal ballistics which happen in the blink of an eye, the distance a bullet moves out of the case before it engages the riflings is highly critical to precision potential. Therefore, in order to systematically optimize the precision of his handloads, it’s critically important that the precision hand-loader understands how to alter bullet seating depth in relation to the barrel rifling. Part of the required knowledge is understanding how to accurately and repeatably measure the Cartridge Base To Ogive (CBTO) dimension. This is explained in the FULL ARTICLE.

Bryan Litz offers an extended discussion on how to measure CBTO using different tools and methods, including the Hornady OAL gauge. You can read this discussion in the full article found on the Berger Bullets website. CLICK HERE to Read Full Article.

Why Not Use CBTO as a SAAMI Standard?
If CBTO is so important to rifle accuracy, you might ask, “Why is it not listed as the SAAMI spec standard in addition to COAL?” There is one primary reason why it is not listed in the standard. This is the lack of uniformity in bullet nose shapes and measuring devices used to determine CBTO.

Benefits of Having a Uniform CBTO
There is another aspect to knowing your CBTO when checking your COAL as it pertains to performance. With good bullets, tooling, and carefully-prepared cases you can easily achieve a CBTO that varies less than +/- .001″ but your COAL can vary as much as .025″ extreme spread (or more with other brands). This is not necessarily bad and it is much better than the other way around. If you have a CBTO dimension that varies but your COAL dimension is tight (within +/- .002″) then it is most likely that your bullet is bottoming out inside the seater cone on the bullet tip. This is very bad and is to be avoided. It is normal for bullets to have precisely the same nose shape and it is also normal for these same bullets to have nose lengths that can vary as much as .025″.

Summary of Cartridge Base To Ogive (CBTO) Discussion
Here are four important considerations regarding bullet seating depth as it relates to CBTO:

1. CBTO is a critical measurement to understand for handloaders because it’s directly related to precision potential, and you control it by simply setting bullet seating depth.

2. Tools and methods for measuring CBTO vary. Most of the measurement techniques have pitfalls (which may give rise to inconsistent results) that you should understand before starting out.

3. A CBTO that produces the best precision in your rifle may not produce the best precision in someone else’s rifle. Even if you have the same rifle, same bullets, same model of comparator gauges, etc. It’s possible that the gauges are not actually the same, and measurements from one don’t translate to the same dimension for another.

4. Once you find the CBTO that produces the best precision in your rifle, it’s important to allow minimal variation in that dimension when producing quality handloads. This is achieved by using quality bullets, tooling, and properly preparing case mouths and necks for consistent seating.

CLICK HERE to Read Full Article with More Info
Article sourced by EdLongrange. We welcome tips from readers.
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March 13th, 2020

CMP Western Games Proceed But Some CMP Events Cancelled

CMP Western Games

Competitors take note — The CMP Western Games will continue as scheduled at Ben Avery in Phoenix this week, from March 13 (today) through March 22, 2020. However, the CMP has cancelled some other events scheduled this spring due to concerns over the Coronavirus (COVID-19) (see below).

Regarding the Western Games, the CMP states: “The Western CMP Games and HP Matches at Ben Avery Shooting Facility, AZ [are] to be Conducted as Scheduled. Participants need to be mindful of sound general health practices to help prevent communication of the virus (frequent hand washing, social distance with others, etc.).”

CMP 2020 Western Games
The Western Games begin Friday, March 13 and conclude Sunday, March 22.

CMP Event Cancellations

1. CMP National JROTC Championship — Camp Perry, OH (March 19-21)
Changed to Postal Match.

This championship event will continue as a postal match with finals. Details will be emailed to teams and coaches as soon as they are finalized.

2. CMP 3-P Regional Airgun Championships — Camp Perry, OH – Sandy, UT – Anniston, AL (March 26-28 and April 2-4)
Changed to Postal Matches.

These regional events will continue as postal matches with finals. Details will be emailed to teams and coaches as soon as they are finalized.

3. CMP 3-P Air Rifle Junior Summer Camps and Clinics Program — Multiple Locations (June, July and August). CANCELLED Completely.

On the Watch List:

CMP 3P Air Rifle National Championship — Camp Perry, OH
(Sporter – June 25-27 and Precision July 11-13)

At this point the CMP is planning to conduct the CMP National 3-P Championship in June and July, but will be monitoring the situation and will announce additional cancellations if needed.

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