Tech Report by Brian Williams
Reloading for a military surplus gun is different than loading for a modern precision rifle in my opinion. There are a few tasks that carry over from one to the other, but the main goal is slightly different. The target shot in the CMP games matches has a rather generous 10 ring, and with a little larger target your focus needs to change from a round with ultra accuracy to a round that is safe and functions well in your particular rifle.
Reloading for Vintage .30-06 Springfield Rifles
Bullet Selection — With the .30-06 for my Garands and Springfields I stick mostly with 168gr bullets plus some 155-grainers. These bullet weights have just worked for me in the past.
Cartridge Brass (Milsurp vs. Commercial) — I use both military and commercial brass, having success with each. I do prefer commercial brass as it is easier to prep for the first reload. Military brass usually has a primer crimp of some kind that needs to be removed, and I have found that trimming these cases can sometimes leave you scratching your head as the OAL on military cases varies considerably.
Powder Charge and Dispensing — I have always had good success with Hodgdon H4895 powder. My load has always been right around 47.0 grains, with both the 168gr and 155gr bullets. I also use the Auto-Trickler to drop all of my powder charges. This is a fantastic piece of equipment that not only gives super-consistent powder charges quickly, but it also makes one less thing that you have to worry about while on the firing line. With the Auto-Trickler, there is never a question about the powder charge in your ammo. As for primers, I have been shooting CCI 200 Large Rifle primers for many years and have never had an issue.
Case Care and Trimming — With most of the .30-06 brass that I use, I will only reload them 5 times maximum. I don’t push the brass too much, because the Garand’s semi-auto cycling can be tough on the cases. I also trim my cases for OAL each reload cycle. I use a Giraud power trimmer, so trimming is relatively quick and easy.
The chambers in some of the older rifles are not perfectly-machined like a modern high-end rifle. This can cause the brass to grow a little inconsistently, so I find trimming every load cycle helps to make sure that everything stays in a nice safe spec.
Case Annealing — A few years ago I started to anneal my .223 Rem service rifle brass. Now I have added that process for all my match ammunition. I anneal after every firing. It is a rather easy step as I can have my auto-feeding Annealeez machine running while doing something else, so annealing does not add a great deal of time or effort to the reloading process.
The .30-06 case was the father of the .308 Winchester, which was adopted as the 7.62×51 NATO cartridge.
VIDEO Showcase — Brian Williams Shoots M1903A3 Prone in May 2021
+ONE Program to Encourage New Shooters
August is National Shooting Sports Month. As part of this effort, the NSSF encourages firearms owners to take one novice to the range this one. This +ONE Movement will help strengthen the ranks of shooters, which, in turn, can help protect our Second Amendment freedoms. The NSSF states: “If just one in three of America’s recreational shooters adds one new person to the shooting sports, we’ll secure a strong future for generations to come. So be the one. For all the thrills and excitement recreational shooting has given you, join the +ONE movement and invite someone to the range today. Share your experience on social media.”
The +ONE campaign seeks to build the ranks of shooters. The NSSF says: “If just one in three of America’s recreational shooters adds one new person to the shooting sports, we’ll secure a strong future for generations to come.” Learn more at LetsGoShooting.org.
As part of the +ONE Movement, the NSSF encourages all participants to practice gun safety and proper firearms handling and storage practices. This video covers basic gun safety procedures:
Today we feature a modern switch-barrel PRS chassis rifle set up for quick changes between 6mm Creedmoor and 6.5 Creedmoor barrels. The owner, Forum member Jeff Cosgrove (aka “Punkur67″) uses the 6 CM barrel for competition, favoring the reduced recoil over its 6.5 mm big brother. He does use the 6.5 CM barrel for practice (given its better barrel life). The 6.5 CM barrel also gives him the chance to shoot a variety of factory 6.5 Creedmoor ammo.
- Terminus Zeus action with Quick Change (QC) barrel option.
– 6mm Creedmoor Pre-Fit Bartlein Heavy Varmint 400MODBB barrel for matches
– 6.5 Creedmoor Pre-Fit Benchmark Heavy Palma barrel for training
– MPA BA Competition chassis with full weight kit
– Zero Compromise Optic ZCO 5-27x56mm FFP scope
– TriggerTech Diamond trigger
This rifle represents an evolution for Jeff. Each step along the way in his PRS journey, he has learned more about what he wants and needs in a competition rifle. And what you see here, from the $3760 ZC527 scope to his high-tech reloading equipment, represents pursuit of excellence. Jeff even created a modern, spacious man cave/reloading center in his new house (photos below).
Quick-Change Barrel System with Terminus Zeus QC Action
This rifle has two pre-fit barrels that work with the Terminus Zeus QC Action for fast and easy barrel swaps. To remove a barrel, you simply release two tension screws on the front of the action and then unscrew the barrel. To swap in a different pre-fit barrel, reverse the process and then tension the screws. The Terminus Zeus is 3-lug receiver with 60° bolt and integral recoil lug. Both the receiver and bolt are DLC-treated. Jeff reports this action is extremely smooth and has met all of his expectations. Some other Zeus features are threaded trigger pins for quick/easy trigger installation, and a roller-tipped cocking piece.
PRS Discipline Offers Fun, New Challenge for Long-Time Shooter
My name is Jeff Cosgrove, I live in Winchester, California and do commercial heating and air conditioning. I have shot for 20+ years but I found my interest in shooting was dwindling over time. I got somewhat bored with shooting paper at 100 yards or plinking cans out in the desert. About 18 months ago I decided I wanted to shoot long range. I picked up a used MPA in .300 Winchester Magnum and started shooting long range with a new buddy. That day I fell in love with guns all over again with more intensity than ever.
How I Got Started in PRS
With that new .300 WM I soon found my reloads were not up to my expectations (high ES/SD), so I purchased all new reloading hardware. One of my purchases was a used Benchsource Annealer. The guy I bought that from asked if I had ever tried PRS and he invited me to check out a match. So I went to a local PRS event as a spectator. I looked at many rigs on the firing line and took notes. By the end of the day I knew this was something I really wanted to do. I then acquired a used chassis rifle that I thought would work well for PRS. I went to a PRS match the following month but shot poorly.
After working with that first PRS rifle, a 6.5 CM with Stiller Tac30 action, MDT chassis, and Proof Carbon-wrapped barrel, I quickly learned that gun did not handle and balance the way I hoped.* It was too light in the front, the ergos were poor, and scope eye relief was not optimal. So I decided to build my own GEN 2 PRS rifle. This is the story of how I put together my new switch-barrel rig that I now use in competition.
PRS Rifle and Gear Selection — Learning What Works
Barrel availability was limited given the current shortages. Luckily I was able to obtain a 6mm Creedmoor pre-fit Bartlein Heavy Varmint 400MODBB from Southern Precision Rifles. The 6mm Creedmoor is notorious for being a barrel burner cartridge so I went with the special 400MODBB metal. Bartlein says that barrel life expectancy is 1.5 to 2 times longer than the standard 416 grade steel. I also purchased a 6.5 Creedmoor pre-fit Benchmark Heavy Palma barrel for training (Source: Straight Jacket Armory). With the Terminus Zeus quick change system I am able to swap from my match barrel to my trainer barrel in just a couple minutes. I loosen two set screws, unthread the barrel, thread the new barrel on, and torque the set screws to 10 inch-pounds. This also affords me caliber options in case I’m in a pinch for ammo. If I have some 6.5 CM loaded up and don’t have time to load 6mm Creedmoor for a match, then I’m covered.
For the trigger, I went with a TriggerTech Diamond Pro curve model. I have Timney, Jewell, and TriggerTech triggers in other rifles. I like them all but I liked the feel of the TT Diamond the best so that is what I used on this build. I set my triggers around 18-20 oz. — I am not a fan of ultra-light trigger pulls.
MPA BA Competition Chassis with Added Weight
I went with an MPA BA Comp chassis with full internal and external weight kit. I also have Gray Ops external weight on the handguard. I had the same chassis on my .300 WinMag and felt very comfortable with it. I took a PR1 class and found that, with a different gun, I had to force a comfortable hand position for proper trigger pull. After that class I grabbed my MPA and my hand fell in to the perfect position. I did not need to hunt or index my hand with the MPA. The built ARCA rail (RAT) lowered the rifles center of gravity more than my old setup with the ARCA rail bolted to the bottom of the handguard. With the current configuration, the rifle weighs in at 24 lbs. and balances three inches in front of the magwell. I now have the flexibility to add, subtract, or move approximately 6 lbs. of weight.
The Attraction of PRS/NRL Practical Competitions
I really enjoy PRS-style shooting because there seems to be a new challenge every time you compete — no matter what. With PRS I am shooting many different positions and ranges with the pressure of a stopwatch. This keeps things interesting for me. I have taken a few training classes to help establish good, clean fundamentals.
Jeff says it is hard to practice for the many unconventional shooting positions at PRS matches.
My biggest challenges so far have been: 1) building stable shooting positions that I have not practiced enough; 2) proper equipment selection; and 3) time management. Regarding the shooting positions — PRS/NRL is not like F-Class where you can always practice from one position. And it’s hard to practice for unusual set-ups (barriers and positions) you’ve not encountered before. Concerning equipment — you need some experience in the game to determine what really works best for you.
Innovative Zero Compromise Optic — Optimized for the Tactical Game
The scope is a Zero Compromise ZC527 (5-27x56mm FFP) with MPCT2 reticle. Zero Compromise Optic is a relatively new manufacturer, but their scopes are top-flight. The First Focal Plane ZCO has excellent glass that is extremely bright and clear. With a big 36mm main tube, the ZC527 offers 35 Mils Elevation and 21 Mils Windage adjustment. The field of view is 21 feet at 100 yards — one of the widest in the industry. The ZC527 also offers illuminated reticle and locking turrets. When I was at my first PRS match I looked through several different scopes. When I got behind a ZCO scope I knew this was what I wanted — the ZCO scope was super clear, super sharp, with very positive controls.
I put a protective wrap on the scope because with some of our PRS stages it is easy to scratch or dent the scope tube. You don’t want to bang up an expensive scope — the ZC527 retails for $3760.
Reloading for 6mm Creedmoor and 6.5 Creedmoor
When starting out with a new cartridge I like to search places like AccurateShooter.com and UltimateReloder.com for popular recipes used by knowledgeable shooters. I am all about paving your own way on certain things but with the consistency, higher cost, and limited supply of components these days I try to stick with the most common loads. I also want to limit barrel wear and get through load development quickly. I don’t want to chase loads for 300 rounds to ultimately land in the same place that so many other people have already found.
I start my new barrels with virgin brass and load three rounds at each charge weight in 0.2 grain increments. I put the most popular charge weight (for my chosen bullet) in the middle of my load range and load above and below to find a good node while paying close attention for pressure signs along the way. I use the 6.5 Guys spreadsheet (see below) to help analyze my results. With those results I like to re-test a narrower range with 5-10 rounds each charge weight in 0.2 grain increments. I again use the 6.5 Guys spreadsheet to make a final charge weight selection and then I move on to seating depth. I will load different depths to tighten the groups up.
Load Development Using 6.5 Guys Custom Spreadsheet
To hold and analyze my load development data I use the spreadsheet from 65Guys.com. It helps a ton with making a decision on your final load. This Excel spreadsheet works great and makes it simple to analyze your data. You can even copy and paste your chronograph data if your chrono logs on to a SD card.
In this 6.5 Guys video Steve provides an overview and tutorial for using the Excel load development analysis model that he has developed. The Excel Load Development Analysis Spreadsheet version 2.0 is FREE. Download from the 6.5 Guys Website.
In this video Steve explains some key statistical concepts for performing load data analysis. He also provides tips and guidance for determining the optimal load for your rifle as you analyze the load data you’ve collected.
New House, New Man Cave/Reloading Room
Jeff recently moved with his family into a great new house. One bonus of this move was that he upgraded from a cramped reloading area to a dedicated “Man Cave” that has ample space for his gun safes, multiple presses, and all his reloading components. Large upper and lower cabinets plus a dedicated “gun closet” provide plenty of storage. Read all about this move in this AccurateShooter Forum Thread.
Here is Jeff’s first reloading area years ago: “My first reloading setup was smashed in my two-bedroom condo so I had a very small bench that was very cluttered. I had to deal with the limited space I had but I made it work. Then in our first house I had a larger bench/cabinet, but it was still not ideal.”
Here is the new Man Cave in the new house — very open, spacious, with plenty of storage.
This animated GIF shows the new Man Cave move-in process start to finish:
Bullet sorting station — quilted Maple with marble tile inlay, created by JVW2008.
We have a master woodworker in our Shooters’ Forum, Jerry from Colorado (aka JVW2008). In a Shooters’ Forum thread, Jerry showcases multiple examples of his handiwork — various wood projects for the reloading room. Beautifully made, these one-of-a-kind custom cabinets and tool stands deserve to be on display in a museum.
Jerry’s creations exhibit exquisite craftsmanship and some very clever design features. What is your favorite item among the Jerry’s wood wonders shown here? You can reveal your favorites in the comment section below.
Throne for a Sartorius Analytical Balance
Jerry built this “Throne” for his ultra-precise Sartorius Entris force restoration scale, which is linked to a V2 Auto-Trickler. This is a true state-of-the-art powder measuring system on a beautiful base unit.
Cabinet for Balance Beam Scale
Here is an oak balance beam scale cabinet and weighing surface. Note the mulitiple tiers, side wings, and other smart design features.
Custom Arbor Press Base
Below is a handsome, well-designed base for K&M Arbor Press and Wilson dies. Look at the fitted recesses for the hand dies — very nice!
Jumbo Walnut/Maple Loading Block
And here is a beautiful 100-cartridge reloading block, crafted from Walnut over Maple. It’s impressive to see 100 cartridges all lined up like that!
To see more impressive wood projects by our Shooters’ Forum members, visit the Wood Working Ideas Forum Thread. Along with Jerry’s reloading toom wonders, you’ll see cleaning cradles, shooting benches, transport boxes, and much more. Check out this amazing inlaid rifle case crafted by Forum member Nando-AS for his son.
As a cartridge case is reloaded multiple times, burnt powder residue and carbon builds up on the inside of the case. Unless the case interior is cleaned in some fashion, eventually you’ll see a slight reduction in case capacity. One of our Forum members from Australia wonders about the effects of reduced case capacity: “If the capacity of the case decreases as the crud builds up, then it effectively reduces the size of the cartridge (inside). Wouldn’t that change the pressure produced from that of an equivalent clean case?”
Interesting Test of Case Capacity Changes
Forum member Fred Bohl has actual test results that can help answer the above question. Fred proved that, over a 20-reload cycle, the case capacity of uncleaned cases did decline a small amount. However, surprisingly, this did not seem to affect the actual chronographed velocity of the load. Extreme Spread (ES) did increase, but Fred believes the higher ES was due to changes in case-neck tension, rather than due to the slight reduction in case capacity. Fred reports:
“Back when beginning to use ultrasonic case cleaning, part of the motivation was to get the inside clean based on the assumption that allowing burnt residue to build up inside cases would affect capacity, and, ultimately, performance. An experiment was done to test this hypothesis. The load used, 30.5 grains of RL15 behind 107gr SMKs in a 6mmBR, was selected for best group and lowest ES in prior load development. It turned out to be 92% of initial case capacity and neither “full” or compressed. (I would suspect that different powders, load weight, and total case capacity might produce very different results.)
We took 30 cases of identical initial capacity and tracked three lots of 10 each:
LOT 1: No Internal cleaning LOT 2: Cleaned with media in tumbler LOT 3: Cleaned with Ultrasound machine
Each case (in each lot) was shot and reloaded 20 times. The simplified results after 20 reloads of each lot were as follows:
Lot 1 (not cleaned) – 0.3 to 0.4 gr. loss of capacity, 5 to 8 fps greater ES.
Lot 2 (tumble cleaned) – 0.1 to 0.3 gr. loss of capacity, 4 to 6 fps greater ES.
Lot 3 (ultrasonic cleaned) – no loss of capacity, no detectable change in ES.
FINDINGS
There was no detectable correlation of velocity change to the lots. An oddity was that on very hot days Lot 1 velocities were, occasionally, slightly higher. From results of another ongoing test, I believe the above differences in ES are probably due more to variance in bullet grip tension than case capacity. The ultrasound cleaned cases (LOT 3) did maintain the lowest ES, but we are not 100% sure of the reasons why. More consistent bullet seating might be the reason.”
Editor’s NOTE: Fred’s results do suggest that carbon build-up inside the uncleaned cases might cause a slight increase in pressure that shows up on hot days. Fred has posted that: “A local shooter reported doing the 20 reload, no-clean test on a .308 that gave a loss of capacity of 2.0 grains, doubled ES and significant velocity changes. However, I don’t have any details on his load weight or powder.” Obviously a lot of carbon can build up with 20 reloads. Many shooters retire their brass before then.
Ultrasonic Cleaning and Neck Lube
Some time ago, Jason Baney did a lengthy test on ultrasonic cleaning. Jason found that with his ultrasonically-cleaned cases, the inside of the necks got so “squeaky clean” that he needed to use dry lube in the necks. Jason uses the $21.50 dry lube kit from Neconos.com. This applies ultra-fine Moly powder to the neck using small carbon steel balls.
Examples of Guns & Gear Videos from GunTalk YouTube Channel Guns & Gear is a leading gun-centric resource with hundreds of informative videos. Produced by Tom Gresham, Ryan Gresham, and the Gun Talk team, Guns & Gear showcases new products in the firearms industry. Each episode features interviews with industry experts/instructors, range demonstrations, tips, and training techniques. Guns & Gear content is all FREE — you can watch hundreds of videos from Guns & Gear past seasons via the Guns & Gear Archive on GunTalkTV.com. And there are 900+ Guns & Gear videos on YouTube as part of the GunTalk Media YouTube Channel.
Savage 110 Precision Field Test and Review — 6.5 Creedmoor
Looking for an accurate, value-priced chassis rifle for PRS/NRL production class competition? Or would you like to shoot a big magnum in ELR matches? The Savage Arms 110 Precision is a good choice. These Savage 110 chassis rifles show excellent accuracy, and the barrel nut system allows easy installation of pre-fit barrels. Priced at $1649 MSRP, the Savage 110 Precision features an aluminum MDT LSS XL Cerakoted chassis and a 24″ barrel with factory muzzle brake. Chamberings offered are: 6.5 Creedmoor, .308 Win, .300 PRC, .330 Win Mag, and .338 Lapua Magnum.
Colt King Cobra Target .22 LR Rimfire Revolver
We think all serious shooters should have a .22 LR rimfire pistol in their collection, and a rimfire revolver is a smart choice, offering great accuracy and reliability. Colt relaunched the .357 Magnum King Cobra in 2019, and Colt later launched the .22 LR King Cobra Target family of rimfire revolvers. The King Cobra Target rimfire series includes 2″, 3″, 4.25″ and 6″ barrel versions. In this video, Justin Baldini joins Guns & Gear’s Kevin “KJ” Jarnagin reviews the features of the rimfire King Cobra Target. Then Team Colt’s Jalise Williams joins Guns & Gear’s Chris Cerino for a range demo.
Reloading Basics with Gavin Gear of UltimateReloader.com
In this Range Ready Tip, Gavin Gear of UltimateReloader.com explains the basic equipment one needs to reload rifle cartridges. Whether you’re an experienced reloader, or aspire to be one, you’ll find Gavin’s explanations helpful. He covers the key procedures — case sizing, priming, powder dispensing, and bullet seating. This Range Ready Tip features Hodgdon powders and Nosler bullets, with Lyman reloading presses and tools.
How to Improve Organization of Your Gun Safe
Many gun owners can benefit from this video which shows how to arrange the long guns and handguns in your gun safe. The video shows how to use rifle rods and handgun hangers to organize your gun safe contents in the most efficient manner. This can both make it easier to access your guns and can also help protect your valuable firearms from scraping and contact damage. Note: We recommend you put both rifles and pistols in rust-blocking sleeves for long-term storage.
Best Tripods for Hunting and Precision Shooting
This video explains how to select the best tripod for your hunting mode/match discipline and gun type. This video compares tripods from BOG, Two Vets, and Tricer. 1. The BOG DeathGrip (aluminum & carbon versions is good for hunting blinds, but is heavy and not ideal for mobility. 2. The Budget Spotting Scope Tripod is conveniently light but optimized for glassing, not for rifle support. 3. The Two Vets Recon V2 is a match-grade tripod ideal for long-range and precision shooters. 4. The Tricer HK Kit is a lightweight, inverted design with ball head and gun clamp. This may be the best all-around option for both hunting and tactical matches.
Guns & Gear Goes to GAP Grind — Leading Pro/Am PRS Match
For this video, Gun Talk’s Kevin “KJ” Jarnagin attended the Bushnell GAP Grind, a huge PRO-AM PRS match held annually in Tennessee. The GAP Grind, the largest, most popular PRS match in the world, draws nearly 400 amateur and pro shooters. Recognized as the premier PRO-AM precision rifle match with both individual and team competition, the GAP Grind has introduced thousands of new shooters to the sport since its inception. This 2-day, multi-stage PRS match is known for being very challenging.
Popperpalooza — Shooting 100 Steel Popper Targets with AR15
This fun video shows the ability of a modern sporting rifle (MSR) to drill a host of reactive steel targets with speed and efficiency. Using a Springfield Armory Saint AR-15, top action shooter Rob Leatham takes on “Popperpalooza” — a set-up with multiple rows of 100 steel “popper” targets. Shooting reactive targets is fun because you get instant gratification with the sound of the hit and the movement of the target as it falls down, swings, or spins.
Optics — Angled and Straight Spotting Scope Designs Compared
Spotting scopes come in two basic styles — straight and angled. The angled version is the most common because it can be used from all shooting positions — even prone (just rotate the spotter around its centerline). If you are spotting from a sitting or standing position, with the spotting scope on a tripod, a straight spotter may work best. That way your head/neck/torso is not bent down and you can instantly see a full view ahead just by moving your head slightly away from the lens. In this video, Gun Talk’s Kevin “KJ” Jarnagin covers the pros and cons of Straight vs. Angled spotting scopes. KJ uses Leupold SX-4 Pro Guide HD15-45x65mm spotting scopes in both straight and angled configurations.
Below are links to five past Guns & Gear shows we recommend. These feature some impressive rifles and pistols, notable new optics, and good travel advice for gun owners. Click a link below to open the show list for a particular season. Seasonal show previews will then display top to bottom in numerical order. Then look for the particular show number and click on it.
Season 13, Episode 7: Colt Anaconda, Frankford Arsenal X-10 Progressive Press, SIG Sauer Red Dot optics
The Shooting Sports USA website includes two excellent articles about the basics of metallic cartridge reloading. These two articles provide an excellent summary of the key procedures. If you are new to reloading, we recommend you read both articles:
Part II is particularly helpful because it explains the entire reloading process step-by-step, with 14 listed steps. The author notes: “In this, the second installment on metallic cartridge reloading, we’ll follow the sequence of steps involved in reloading a rifle cartridge and refining a metallic cartridge load. These steps are based on the use of a single-stage reloading press and a separate priming tool.”
Much important advice is provided as this article runs through the 14 Steps of Reloading. For example, when explaining Step 13, Bullet Seating, the article states:
“Proper seating depth is critical. Too much bullet protrusion and the cartridge may not work through the gun’s magazine, or it may fail to chamber. Too little and the bullet intrudes excessively into the powder chamber, decreasing volume and raising pressure. Neck tension is also important; any bullet that fails to seat with some resistance may be held only loosely by the neck and may be driven back into the case when the round is chambered, especially in semi-automatic arms.”
Important Guide to Detecting Over-Pressure Signs in Brass
As an example of the invaluable advice provided in these two articles, here’s a sample from Part II that explains how to determine if your load is over-pressure. We recommend that EVERY reader read this twice. There are more things to consider than a stiff bolt lift. You need to inspect cartridges very carefully:
The shape of powder grains has a profound effect on the performance of the powder charge, as it concerns both pressure and velocity. There are multiple powder shapes including flake, ball, and extruded or “stick” (both solid and perforated).
So how does powder grain shape affect pressure and muzzle velocity?
In general, it can be said that powder that burns progressively achieves a desired muzzle velocity at lower maximum pressure than a powder that burns neutrally, not to mention a degressive powder. As grain size increases, the maximum pressure moves towards the muzzle, also increasing muzzle blast. Muzzle velocity and pressure can be adjusted by means of the amount of powder or loading density, i.e. the relationship between the powder mass and the volume available to it. As the loading density increases, maximum pressure grows.
All Vihtavuori reloading powders are of the cylindrical, single-perforated extruded stick type. The differences in burning rate between the powders depend on the size of the grain, the wall thickness of the cylinder, the surface coating and the composition. Cylindrical extruded powders can also have multi-perforated grains. The most common types are the 7- and 19-perforated varieties. A multi-perforated powder grain is naturally of a much larger size than one with a single perforation, and is typically used for large caliber ammunition.
Other types of powder grain shapes include sphere or ball, and flake. The ball grains are typically used in automatic firearms but also in rifles and handguns. The ball grain is less costly to produce, as it is not pressed into shape like cylindrical grains. Flake shaped grains are typically used in shotgun loadings.
Web thickness in gunpowder terminology means the minimum distance that the combustion zones can travel within the powder grain without encountering each other. In spherical powders, this distance is the diameter of the “ball”; in flake powder it is the thickness of the flake; and in multi-perforated extruded powders it is the minimum distance (i.e. wall thickness) between the perforations.
The burning rate of powder composed of grains without any perforations or surface treatment is related to the surface area of the grain available for burning at any given pressure level. The change in the surface area that is burning during combustion is described by a so-called form function. If the surface area increases, the form function does likewise and its behavior is termed progressive. If the form function decreases, its behavior is said to be degressive. If the flame area remains constant throughout the combustion process, we describe it as “neutral” behavior.
The cylindrical, perforated powders are progressive; the burning rate increases as the surface area increases, and the pressure builds up slower, increasing until it reaches its peak and then collapses. Flake and ball grains are degressive; the total powder surface area and pressure are at their peak at ignition, decreasing as the combustion progresses.
Our friend Dennis Santiago has done dry-fire training using a SCATT sensing device. This electro-optical unit shows a trace of barrel/muzzle movement on a computer screen, allowing a shooter to improve his hold and aiming. With practice, you get steadier, and learn to break the shot more perfectly. Top position shooters worldwide use this system. Dennis tells us: “This is my dry fire practice set up. I’m working on my approaches to the target today. You need the SCATT’s traces to see the feedback of what’s going on.” Here is one trace from Santiago’s morning training session:
Dennis trains indoors at his house: “The set-up is in a room with the target about 15 feet away mounted on a scope stand at eye height and aligned. This morning, it’s focus and trigger control. My offhand form is gonna get there bit by bit. There are many details to turn into instincts.”
SCATT MX-02 Training System
The SCATT MX-02 is an electronic shooter training system that is capable of operating outdoors with live, centerfire ammunition, at distances from 25 yards to 600 yards. Tony Chow tested this product for AccurateShooter.com. As fitted to his AR-15 Service Rifle, Tony concludes this is a very useful tool that can help High Power competitors refine their technique and shoot higher scores. FULL REVIEW HERE.
CLICK HERE for MX-02 product info page. Current MX-02 price is $1649.00. NOTE: There is now another more high-tech wireless model, the SCATT MX-W2 priced at $1999.00.
How the SCATT MX-02 Works
The SCATT sensor mounted on the end of the barrel has a digital camera that recognizes the black bullseye in the target, even in broad daylight outdoors. Using the bullseye as a reference, the SCATT software tracks the movement of the muzzle relative to the center of the target. The unit can plot these movements as a continuous trace, which appears on a monitor as a squiggly, colored line. By sensing the exact moment of shot release, the SCATT can also interpolate relative shot placement (for a single shot or series of shots) — but this is not the same as an electronic target which actually records the exact shot impact location on the target.
Pro shooter Kirsten Joy Weiss demonstrates the SCATT MX-02 electronic training system:
The system traces and records valuable information such as hold pattern, shot hold duration, follow-through, recoil pattern, and much more. The latest SCATT MX-02 systems can be used both indoors and outdoors up to 300 meters (and possibly more). READ FULL SCATT MX-02 TEST HERE.
SCATT traces reveal muzzle movements during the aiming process.
On Thursday, August 14, 2025, the Federal Ninth Circuit Court of Appeals has issued its mandate striking down California’s “one-gun-per-month” purchase restriction law. This was noteworthy as it was the first time the notoriously liberal 9th Circuit has issued a final judgment striking down a law as unconstitutional under the Second Amendment. This follows CA Attorney General Bonta declining to ask the 9th Circuit to rehear the case en banc (i.e. with full panel of all judges).
“California has managed to do what many thought impossible: violate the Second Amendment so blatantly that even the Ninth Circuit won’t uphold it”, explained FPC Action Foundation President Cody J. Wisniewski, counsel for FPC. “We are proud to have secured the rights of peaceable people and look forward to many more wins against California’s unconstitutional laws.”
California “1-in-30″ Firearm Ban Struck Down in Ninth Circuit Decision
The Ninth Circuit Court of Appeals has ruled that a California law restricting gun purchases to just one every 30 days is absolutely unconstitutional. With a unanimous 3-0 decision, a Ninth Circuit panel held that California’s “one-gun-per-month” gun ban law clearly violates the Second Amendment of the U.S. Constitution. The Ninth Circuit ruling in Nguyen v. Bonta can be viewed at firearmspolicy.org/nguyen.
“California has a ‘one-gun-a-month’ law that prohibits most people from buying more than one firearm in a 30-day period. The district court held that this law violates the Second Amendment. We affirm. California’s law is facially unconstitutional because possession of multiple firearms and the ability to acquire firearms through purchase without meaningful constraints are protected by the Second Amendment and California’s law is not supported by our nation’s tradition of firearms regulation”, wrote Ninth Circuit Judge Forrest. At the end of the 24-page decision, Judge Forest added: “The Second Amendment expressly protects the right to possess multiple arms. It also protects against meaningful constraints on the right to acquire arms because otherwise the right to ‘keep and bear’ would be hollow.”
Plaintiffs in the case included two FFL gun dealers, the Firearms Policy Coalition (FPC), the Second Amendment Foundation (SAF), San Diego County Gun Owners PAC, and six private citizens including Michelle Nguyen, for whom the case is named.
The Nguyen v. Bonta lawsuit challenged the California statute that only allows for the purchase of one handgun or semi-automatic centerfire rifle, from a licensed dealer within a 30-day period. Plaintiffs secured a summary judgment win at the District Court, which California then appealed to the Ninth Circuit. The Ninth Circuit affirmed the District Court decision, striking down the gun rationing law as impermissible under the Second Amendment.
Bullet Selection — With the .30-06 for my Garands and Springfields I stick mostly with 168gr bullets plus some 155-grainers. These bullet weights have just worked for me in the past. 
Powder Charge and Dispensing — I have always had good success with Hodgdon H4895 powder. My load has always been right around 47.0 grains, with both the 168gr and 155gr bullets. I also use the Auto-Trickler to drop all of my powder charges. This is a fantastic piece of equipment that not only gives super-consistent powder charges quickly, but it also makes one less thing that you have to worry about while on the firing line. With the Auto-Trickler, there is never a question about the powder charge in your ammo. As for primers, I have been shooting CCI 200 Large Rifle primers for many years and have never had an issue. 
+ONE Program to Encourage New Shooters
