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October 1st, 2021

30 BRX: An Improved 30 BR — More Speed for Better Ballistics

30 BR 6mmBR 30 BRX wildcat Al Nyhus

We first ran this story a few years back. But it’s still a very interesting subject for benchrest shooters. Shown above, the 30 BR (a 6mmBR necked up to .30 caliber) currently rules the benchrest-for-score game. However, a 30 BR Improved offers some potential advantages, particularly when the winds are strong or tricky. In this article Al Nyhus explains his 30 BRX wildcat. Running Hodgdon H4198, Al says he gets an easy 150 -200 FPS more than the conventional 30 BR. That can translate to less drift in the wind. It also lets you pursue a higher speed node, which can lead to improved accuracy with some barrels.

30 BRX wildcat cartridge VFSForum member Al Nyhus is a top-level score shooter who has competed successfully with the 30 BR cartridge in VFS (Varmint for Score) matches. Al has been working on an “improved” 30 BR cartridge that delivers extra velocity. Al’s 30 BRX cartridge is inspired by the 6mm BRX cartridge, popular in 600-yard benchrest and across-the-course competition. The 6mm BRX cartridge maintains the same sidewall profile and shoulder angle as the parent 6mmBR case. Likewise, the 30 BRX retains the 30° shoulder used on the popular 30 BR cartridge.

Al reports: “Thought you might like to see what I’ll be working with in my VFS gun this season. It’s a true 30 BRX — a 30 BR with the shoulder moved forward 0.100″ with the standard BR shoulder angle. Stan Ware of SGR Custom Rifles built one last season for Steve Grosvenor and I was really impressed by the performance of Steve’s gun. The 30 BR barrel on my VFS gun needed replacing, so the new 30 BRX got the nod.”

30 BRX Delivers 150-200 FPS More Velocity than 30 BR
Al says his 30 BRX gives a solid 150-200 fps speed gain over the 30 BR at the top, while needing just 2.5-3.0 more grains of Hodgdon H4198 to do so. A 30 BR case holds on average 40.8 grains of water, while the 30 BRX holds 42.3 grains (roughly 4% more). So the 30 BRX delivers a 7% increase in velocity with a mere 4% increase in H20 capacity. That’s pretty good efficiency. [Editor’s Note: Assuming 34 grains of H4198 is a typical 30 BR match load, Al’s increase of 2.5-3.0 grains for the 30 BRX represents roughly a 7.5-8.5% increase in actual powder burned. That explains the higher velocities.]

Why did Nyhus decide to try an “improved” 30 BR?

Al explains: “The 30 BRX was created to operate at a [higher] velocity level than can be achieved with the standard 30 BR case, while at the same time keeping the easy-tuning characteristics of the standard 30 BR case. We also wanted to use the same powders currently used with the 30 BR and maintain similar operating pressures.” Is the 30BRX harder to shoot because of the increased velocity? Al doesn’t think so: “In a 13.5-lb HV gun, the 30 BRX case is a pleasure to shoot with just a flea bite of recoil.”

Will the 30 BRX Become Popular in Score Competition?
The 30 BR is already an exceptionally accurate cartridge that dominates short-range Benchrest for Score competition. Will the 30 BRX make the standard 30 BR obsolete? Nyhus doesn’t think so. However, Al believes the 30 BRX offers a small but important edge in some situations: “On any given day, it’s the shooter that hits the flags best and makes the fewest mistakes that ends up on top. No amount of velocity will save you when you press the trigger at the wrong time. Missing a switch or angle change at 200 yards that results in 3/4″ of bullet displacement on the target can’t be compensated for with another 200 fps. That’s the hard fact of benchrest shooting. But on those days when, as Randy Robinett says, ‘our brains are working’, the BRX may offer enough of an advantage to turn a close-but-no-cigar 10 into an ‘X’ at 200 yards. Or turn a just-over-the-line 9 into a beggar 10.” Given the fierce competition in Score matches, an extra 10 or another X can make the difference between a podium finish and also-ran status.

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October 1st, 2021

Access FREE Issues of Shooting Industry Magazine

Shooting Industry Magazine archives digital editions

READ for FREE — Shooting Industry is now available in a digital format for FREE. There are free archives going back 14 years to December 2007.

If you want to stay current with trends in the firearms industry, and see important new product releases before they hit dealers’ shelves, you should check out Shooting Industry magazine. While tailored for firearms/outdoor gear retailers and industry professionals, this monthly journal also provides valuable info for all gun owners. We read Shooting Industry to learn about sales trends and current gun law issues. And every issue showcases NEW PRODUCTS. For example, here is a cool new CZ 457 LRP in the October New Product Feature:

Shooting Industry Magazine archives digital editions

Get FREE Digital Shooting Industry Magazines for the Past 13 Years
You can access, for free, 14 years of Shooting Industry back issues, plus all the recent 2021 issues. CLICK HERE for the current issue along with all issues for the previous three years: 2018, 2019, 2020. IMPORTANT — To access older issues, you much first launch a recent digital edition. That will give you access to the full 14-year archive, as explained below.

Here are links for the most recent three issues — October 2021, September 2021, and Augusts 2021. Simply click each cover to read full issue for FREE:

shooting industry magazine october 2021

October 2021
Top Stories:
Notable New Handguns
Shotguns — Defense/Sport
Women’s Hunting Apparel

shooting industry magazine september 2021

September 2021
Top Stories:
Gun Safes
Black Powder Guns
Vintage Firearm Market

shooting industry magazine august 2021

August 2021
Top Stories:
Home Defense Long Guns
Empowering Female Hunters
Trends in Used-Gun Sales

How to Access Magazine Archives Back to December 2007
Once you have launched the digital version of a recent issue, you can access the past 14 years of Shooting Industry back issues by using the ARCHIVE Button. First click on the MENU icon (three horizontal lines). Then click on the link for ARCHIVE. When you click on “Archive”, a list appears on the right. Scroll down to select any issue from July 2021 back to December 2007. Note: The index is divided, so some of the more recent Shooting Illustrated issues are found at the BOTTOM of the Archive, while others are at the top, or the middle. Be patient and look for “SIxxxx”

Shooting Industry Magazine archives digital editions

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October 1st, 2021

Cartridges of the World — Great Resource Covers 1500+ Types

Cartridges of World Barnes 15th Edition

Cartridges of the World (16th Edition), belongs in every serious gun guy’s library. This massive 688-page reference contains illustrations and load data for over 1500 cartridge types. If you shoot a wide variety of cartridges, or are a cartridge collector, this book is a “must-have” resource. The latest edition (release date 7/23/2019) includes 50 new cartridge types and 1500+ photos. This print version can be ordered for $26.93 at Amazon.com (best price new, 3rd party seller), while a Kindle eBook version costs $19.49.

Cartridges of World Barnes 15th EditionView Free Book Sample Content
FREE STUFF for You: If you want to see what you are getting, there is a very large sample section of the Kindle edition available online with over 100 pages of content and dozens of photos and illustrations. To access all this FREE INFO, CLICK HERE, then click on the cover photo where it says “Look Inside”. You could probably spend two HOURs going through the samples.

Updated 16th Edition with Feature Articles
The 16th Edition of Cartridges of the World includes cartridge specs, plus tech articles on Cartridge identification, SAAMI guidelines, wildcatting, and new cartridge design trends. Cartridges of the World, the most complete cartridge reference guide in print, now includes a lengthy full-color section with feature articles such as 7mm Rem Magnum, .44 Special History, and “P.O. Ackley’s Best Improved Cartridges”.

Cartridges of World Barnes 15th Edition

Cartridges of World Barnes 15th Edition

Cartridges of World Barnes 15th Edition

Cartridges of the World 16th Ed. CHAPTERS:
Chapter 1: Current American Sporting Cartridges
Chapter 2: Obsolete American Rifle Cartridges
Chapter 3: Wildcat Cartridges
Chapter 4: Proprietary Cartridges
Chapter 5: Handgun Cartridges of the World
Chapter 6: Military Rifle Cartridges of the World
Chapter 7: British Sporting Rifle Cartridges
Chapter 8: European Sporting Rifle Cartridges
Chapter 9: American Rimfire Cartridges
Chapter 10: Shotgun Shells
Chapter 11: U.S. Military Ammunition
Chapter 12: Cartridge ID by Measurement

Cartridges of the World by author Frank C. Barnes was first published in 1965. The 16th Edition is edited by W. Todd Woodard, Editor of Gun Tests magazine and author of several firearms reference books. Frank Barnes (1918-1992) began collecting information on handgun cartridges at the early age of 12, thanks to his father, a police officer. Frank Barnes was an innovative cartridge designer, who invented the original 308 x 1.5″ Barnes, predecessor of the 30BR case.

Before Frank began a law enforcement career, he was a college professor. Frank was also a pilot, and a race-car driver. Learn more about Cartridges of the World (15th Ed.) at www.gundigest.com.

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