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September 8th, 2014

Hexagonal Boron Nitride (HBN) — How Well Does It Work?

For years, many shooters have coated bullets with Moly (molybdenum disulfide) or Danzac (tungsten disulfide or “WS2″). The idea was to reduce friction between bullets and barrel. In theory, this could lengthen barrel life and extend the number of rounds a shooter can fire between cleanings.

hexagonal Boron nitride bullets

Moly and WS2 both have their fans, but in the last couple of years, some guys have switched to Hexagonal Boron Nitride (HBN), another dry lubricant. The advantage of HBN is that it won’t combine with moisture to create harmful acids. HBN is very slippery and it goes on clear, so it doesn’t leave a dirty mess on your hands or loading bench. Typically, HBN is applied via impact plating (tumbling), just as with Moly.

hexagonal Boron nitride bullets

HBN Results — Both on Bullets and Barrel Bores
Many folks have asked, “Does Hexagonal Boron Nitride really work?” You’ll find answers to that and many other questions on gunsmith Stan Ware’s popular Bench-Talk.com Blog. There Paul Becigneul (aka Pbike) gives a detailed run-down on HBN use, comparing it to other friction-reducers. Paul also discusses the use of HBN in suspension to pre-coat the inside of barrels. Paul observes:

We coated our bullets … how we had been coating with WS2. Now our bullets have a slightly white sheen to them with kind of like a pearl coat. They are so slippery it takes a little practice to pick them up and not drop them on the trailer floor. What have we noticed down range? Nothing different from WS2 other than the black ring on your target around the bullet hole is now white or nonexistent. Our barrels clean just as clean as with WS2. Your hands aren’t black at the end of the day of shooting and that might be the most important part.

Interestingly, Becigneul decided to try a solution of HBN in alcohol, to pre-coat the inside of barrels. Paul had previously used a compound called Penephite to coat the inside of his barrels after cleaning. Paul explains:

If Penephite was used because it was slippery wouldn’t HBN be better? … We called Momentive again (our source for HBN), and talked about mixing HBN and 90% alcohol for a suspension agent to pre-lube our barrels. He though it sounded great but that the Kb>AC6111 Grade HBN would be better for this use. It would stand up in the alcohol suspension and cling to the barrel when passed through on a patch. We got some and mixed it in alcohol 90%. We use about one teaspoon in 16 ounces of alcohol.

We started using it this fall and what we have noticed is that now that first shot fired out of a clean and pre-lubed barrel can be trusted as the true impact point. We use tuners so now I got to the line, fire two shots judge my group for vertical, adjust the tuner as needed or not, and after tune has been achieved go to my record targets. This use has saved us in time at the bench and bullets in the backstop.

You really should read the whole article by Becigneul. He discusses the use of barrel lubes such as Penephite and “Lock-Ease” in some detail. Paul also provides links to HBN vendors and to the Material Safety Data Sheets (MSDS) for the various compounds he tested.

Good Source for Hexagonal Boron Nitride (HBN)
Paul Becigneul (aka PBike in our Forum) has been using HBN for many years with good results. He obtains his HBN from Momentive Performance Materials:

HBM boron nitride source momentive hexagonal bullet coatingMomentive Performance Materials
www.Momentive.com

Sales Contact: Robert Bell
Sales Email: robert.bell [at] momentive.com
Sales Phone: Robert Bell, (980) 231-5404

Permalink Bullets, Brass, Ammo, Reloading, Tech Tip 14 Comments »
August 28th, 2014

Hodgdon Powders at Powder Valley Today — Act Quickly

powdervalley inc

Powder Valley Inc. (PVI) received a fairly substantial shipment of popular Hodgdon powders today, including H4350 and Varget (sorry Varget sold out instantly). There are still some quantities left… but you need to act quickly. As of the time of this post, PVI was still listing quantities of these popular Hodgdon propellant:

Hodgdon H322, 1 lb
Hondgon H414, 1 and 8lbs
Hodgdon H4350, 1 lb
Hodgdon 4831SC, 8 lbs
Hodgdon LeverRevolution, 8 lbs
Hodgdon Retumbo, 1 lbs
Hodgdon Superformance, 8 lbs
Hodgon 50 BMG, 1 and 8 lbs

Permalink Bullets, Brass, Ammo 5 Comments »
August 21st, 2014

Get Free Sierra Bullets Info Chart

How would you like to have the entire collection of Sierra rifle and pistol bullets at your fingertips, complete with bullet Ballistic Coefficients (BCs) and parts numbers? Well we’ve got you covered. Sierra publishes a handy PDF chart that displays all of Sierra’s popular projectiles, from .20 caliber all the way up to .50 caliber. CLICK HERE to download Sierra Bullets Chart.

CLICK Image to Download PDF Chart with All Sierra Bullet Types (2 MB file)
sierra bullets chart poster

Detail Sample from Chart
sierra bullets chart poster

Order Free Sierra Catalog
You can also get a free, hard copy poster with all Sierra’s bullet types. The current Sierra Bullets catalog has a printed insert that folds out into a large poster for your loading room or workshop. To order the current Sierra Catalog (with fold-out poster), visit Sierra’s Catalog Request Page.

Permalink Bullets, Brass, Ammo 3 Comments »
August 15th, 2014

Sierra Acquires Giant Lead Extrusion Press

“Where are the bullets, where is the powder?” (ad infinitum) is what you hear from shooters around the country these days. Well we can’t promise more powder, but Sierra Bullets has invested in machinery that should help increase bullet output. Sierra has acquired a 550-ton rated extrusion press that should pump out lead wire faster (for bullet cores). Sierra tells us: “This is a lead extrusion press we had shipped in from the state of Washington. We are diligently working on getting this thing set up and pumping more lead into our process.”

Sierra Bullets Extrusion Lead Press

If you’re curious how this beast works, Alan Slocum posted an explanation: “It works kinda’ like this”, referring to the photo below. Sierra’s big machine uses a horizontal hydraulic ram instead of the push-down yellow Play-Doh lever, but yes the basic principle is the same.

Sierra Bullets Extrusion Lead Press

Permalink Bullets, Brass, Ammo 1 Comment »
August 9th, 2014

Great Deal on .30-Caliber 175gr HPBT Match Bullets

Quality .30-caliber bullets aren’t cheap. But here’s a deal that should make you take notice. Midsouth Shooters Supply has major-maker 175gr HPBT bullets in 500-count lots for just $99.01. That’s right, ninety-nine bucks for FIVE hundred 175-grainers from one of USA’s leading bullet makers. (Clever boys can probably figure out the source).

.308 30 caliber bullets midsouth sierra hornady HPBT match

If you need match-grade .30-caliber bullets for your F-TR or tactical rifle, this is a very good deal — you’re effectively paying just $19.08 per hundred. We haven’t seen these kind of prices on .30-caliber bullets in a long time. If you’re interested, act soon — quantities are limited.

NOTE: These over-run bullets are also listed as OEM blem. That means there may be some cosmetic flaws, such as water spots or discoloration. But they should shoot fine.

Permalink Bullets, Brass, Ammo, Hot Deals No Comments »
August 8th, 2014

Berger Bullets Launches Applied Ballistics Munitions

Berger Bullets is now in the ammo business, offering high-quality, loaded ammunition for competition, hunting, and tactical applications. Berger will sell ammo through its new company, Applied Ballistics Munitions (aka “ABM” or “ABM Ammo”). See ABM’s ammunition offerings at www.abmammo.com.

ABM Berger Ammunition ammo .300 Winchester .308ABM Ammo will offer precision rifle ammunition for three popular cartridge types: .308 Winchester, .300 Winchester Magnum, and .338 Lapua Magnum. There are three product lines. The “Mission Ready” line is designed for military and tactical use. In addition, ABM will offer “Hunt Ready” ammo for precision hunters and “Match Ready” ammunition for target shooters.

ABM Berger Ammunition ammo .300 Winchester .308

ABM Berger Ammunition ammo .300 Winchester .308

Each product line is loaded with the Berger bullet that best fits a given application. Each of the bullets used have been proven performers among the hand loading community for years and in some cases, decades. The chart below shows the current bullet selections for each of the three product lines:

ABM Berger Ammunition ammo .300 Winchester .308

ABM Ammo Components are Tested Lot by Lot
ABM uses high quality components and tooling to produce the most consistent ammunition possible. In a process developed by ballistics expert Bryan Litz, ABM ammo has been engineered and tested in the Applied Ballistics laboratory. ABM actually tests each individual lot of components used in the loaded cartridges to ensure quality and consistency.

Eric Stecker, President of Applied Ballistics Munitions relays, “Launching an ammunition company in today’s firearm market environment has been a challenging experience. The product will speak for itself among the shooters as to why it is so important that we pursue this effort.” To learn more about Applied Ballistics Munitions, visit www.abmammo.com.

Permalink Bullets, Brass, Ammo, New Product 1 Comment »
August 6th, 2014

Views from the National Long Range Championships

Michelle Gallagher is now the 2014 NRA Long Range High Power Rifle Champion. Michelle shot a perfect Palma score to win the multi-match championship. When the dust settled, Michelle edged out her mom, Nancy Tompkins, by a single X. Readers asked about Michelle’s choice of bullets. In the Long Range Championships, Michelle used the Berger .30-caliber 155.5gr Match Fullbore Target bullet (for Palma), as well as the 6.5mm 140gr Match Hybrid Target bullet.

Here are some photos from the Long Range championships, courtesy GONRAMedia.

CLICK HERE to see more GONRAMedia photos from Camp Perry.

John Whidden, a three-time NRA Long Range Champion, had a pair of long-range rifles built on modified Anschutz aluminum small-bore stocks. John’s scoped rig (first photo) features a Kelbly Panda Action. The iron sight version (second photo below) has a Winchester action. John has done these conversions for other shooters.
long range championship camp perry

long range championship camp perry

Long Range is not a man’s world by any means. The top two LR places at Perry were claimed by ladies.
long range championship camp perry

Tubeguns built with Gary Eliseo chassis systems were popular on the firing line.
long range championship camp perry

Yes, that is a John Deere Mirage Band shielding this shooter’s barrel.
long range championship camp perry

This service rifle shooter found a way to shield his sights and remember his loved ones.
long range championship camp perry

This competitor transformed a Sinclair loading block into an elevated ammo caddy. Clever piece of kit!
long range championship camp perry

“Wagons HO!”. Shooters await the long ride to the pits for target duties.
long range championship camp perry

long range championship camp perry

Permalink Bullets, Brass, Ammo, Competition No Comments »
August 6th, 2014

Berger Updates Free Online Bullet Stability Calculator

Berger Bullets has improved its online stability calculator. Tests have shown that bullets can suffer from reduced BC if the bullet rpm (spin rate) is less than optimal, even if barrel twist rate is otherwise fast enough to stabilize bullets in flight. Now, the improved, free Stability Calculator can determine if you need a faster-twist barrel to enjoy the best BC from your bullets.

CLICK HERE for FREE Berger Twist Rate Stability Calculator

By Bryan Litz, Chief Ballistician for Berger Bullets
We’re happy to announce a major upgrade to our Twist Rate Stability Calculator which is free to use on the Berger Bullets webpage. The old stability calculator was pretty basic, and would simply return a gyroscopic stability number based on your bullet, twist rate, and atmospheric conditions. This was used to determine if your barrels twist rate was fast enough to stabilize a particular bullet or not, based on the Gyroscopic Stability Factor (SG) being greater than 1.4.

Berger Bullet Stability Calculator Twist Rate Bryan Litz

Stability and BC — How Bullet RPM Affects Ballistic Coefficients
The new calculator still calculates SG, but also goes much further. In addition to calculating stability, the upgraded calculator can also tell you if your stability level is harming the effective BC of your bullets or not. Extensive testing has proven that bullets fired with stability levels between 1.2 and 1.5 can fly with excellent precision (good groups), but suffer from a depressed BC, sometimes as much as 10%. Shooting the bullets from faster twist rate barrels allows for the bullets to fly better and realize their full BC potential.

Berger Bullet Stability Calculator Twist Rate Bryan Litz

Permalink Bullets, Brass, Ammo, News No Comments »
August 4th, 2014

Sinclair Videos Show Cartridge Brass Cleaning Options

Shiny brass — it may not shoot more accurately, but it does make you feel better about your hand-loaded ammo. While it’s not necessary to get brass “bright and shiny” after every firing, it is a good idea to clean powder residue, grime, and grit off your brass before you run cases into sizing dies. There are many ways to clean cartridge cases. A quick wipe with solvent on a patch may suffice for recently-shot cases. Older brass with baked-on carbon may require lengthy tumbling. Ultrasonic cleaning is another popular option that gets your brass clean inside and out.

Sinclair International has a series of helpful videos on brass cleaning. These short “how-to” videos, hosted by Bill Gravatt, Sinclair’s past President, cover the various processes you can use — tumbling, ultrasonic cleaning, chemical cleaning, and cleaning by hand.

Video ONE — Cleaning Brass in Vibratory or Rotary Tumbler

TIP: Brass that has recently been shot will clean more easily than brass that has been sitting many days or weeks. If your tumbling media is fresh the job should be done in an hour or less. It’s your choice whether to tumble with primers removed or with primers still in the cases. If you choose to tumble with primers out, we suggest you deprime with a depriming die, rather that put dirty brass into your sizing die. Some people like to add a teaspoon of liquid polish to the media. This does work, cutting tumble time, and making your brass more shiny. However, if you add liquid polish, do that BEFORE you add the brass and let the tumbler run for a 15 minutes to get the polish completely mixed into the media. Otherwise you can else up with gooey gunk inside your cases — a very bad thing.

Video TWO — Ulstrasonic Case Cleaning

TIP: There are many different types of solutions you can use. Soapy water suffices for some folks, particularly if you add a little Lemi-Shine. The Hornady and Lyman solutions work well, and can be used multiple times, provided you strain the solution to remove dirt and grit after cleaning sessions. Many ultrasonic cleaning machines have timers. Experiment with dwell time to see how long you need to immerse your brass. A very small amount of Ballistol in the solution will help lubricate your necks on the inside. This can make bullet seating go more smoothly, with more consistent neck tension.

Video THREE — Chemical Cleaners (Soaking without Ultrasound)

TIP: After using chemical cleaners, such as the Iosso solution, you need to water-rinse your brass thoroughly. A kitchen strainer helps with this (see video at 0:20). Also, don’t forget your brass in the chemical solution — follow the manufacturers recommendations and don’t exceed the recommended dwell time. Chemical cleaners work surprisingly well to remove grease and grime, and the solution can be re-used multiple times. However, if you want your cases to look bright and shiny (like new brass), you will probably have to tumble.

Video FOUR — Manual Cleaning (By Hand)

TIP: Keep some oversize patches in your range kit. At the end of your shooting sessions, wipe off your fired brass with a patch dampened with a mild, non-corrosive solvent (once again Ballistol works well). Before the carbon sets up on your brass it is very easy to remove. For tougher jobs, you can use 0000 Steel Wool (as Bill recommends in the video). You may find that timely hand-cleaning lets you avoid tumbling altogether — or you may choose to tumble (or ultra-sound) your brass only after a half-dozen or so firings.

Permalink - Articles, - Videos, Bullets, Brass, Ammo No Comments »
August 3rd, 2014

Big, Full-Color Wall Posters Show Cartridges at 100% Scale

Need something for the walls of your “man cave” or reloading room? Check out these jumbo-size cartridge posters. The creators of the Cartridge Comparison Guide now offer three very large full-color printed posters. These can be tacked to a wall or matted/framed to hang like paintings. Three different posters are available.

Rifleman’s Classic Poster (38″ x 27″)
The Rifleman’s Classic Poster, a full 38 inches wide and 27 inches tall, is the most comprehensive. This $19.95 poster displays 272 rifle cartridge types at true size (within 4/1000 of an inch). Cartridges shown range from .17 caliber all the way up to the big boomers (including some cannon shells). The Rifleman’s Classic poster includes all American Standardized Rifle Cartridges (as of 2013) and many European rifle cartridges. The poster is a good representation of military cartridges dating back to WWI and includes cartridges such as the 13X92mm MSR and the .55 Boys.

CLICK Image to Enlarge:
Big Bore Cartridge Comparison Guide Poster

American Standard Cartridge Poster (Rifle, Handgun, Shotgun) — $15.95
The 36″ x 24″ American Standard Poster displays 165 rifle cartridges, 55 handgun cartridges, and 9 different shotgun gauges. This includes all American Standardized Cartridges (rifle, handgun, and shotgun) available as of January 2012. All cartridge types are displayed in full color, actual size. The rifle selection includes all standard hunting cartridges from the 17 Mach 2 through the .505 Gibbs and .577 Nitro. Bonus cartridges include the .375 and .408 Chey-Tac, .416 Barrett, .50 BMG, 50-20 and 20mm. The Handgun section covers cartridges from the 17 HMR to the 500 S&W. Shotgun cartridges include the .410 and 32 gauge up to the 8 gauge. NOTE: Wildcat, proprietary, and obsolete-historic cartridges are NOT included in this poster.

CLICK Image to Enlarge:
Big Bore Cartridge Comparison Guide Poster

BIG BORE Cartridge Poster (215 Cartridges) — $15.95
The 36″ x 24″ Big Bore Poster illustrates over 215 large=caliber rifle cartridges, all shown actual size in full color. These include Standard, Historic, Military, Proprietary and Wildcat rifle cartridges side by side. Cartridges illustrated range from the subsonic .338 Spectre up to the monstrous .729 Jongmans. The poster also includes historically significant cartridges such as the 12 Gauge Paradox, 4 Bore, 1″ Nordfelt, 50 BAT Spotter, .50 BMG, .5 Vickers, 12.7×108 Russian, 20mm, 25mm, 30mm and more.

CLICK Image to Enlarge:
Big Bore Cartridge Comparison Guide Poster

Permalink Bullets, Brass, Ammo, New Product 2 Comments »