The CMP Rimfire Sporter discipline is for smallbore rifles that weigh 7 1/2 pounds or less with sights. Firing is done at 25 and 50 yards in prone, sitting, and standing positions, in slow and rapid-fire modes. The CMP has a special smart-phone App that helps speed up scoring. Rimfire Sporter matches are held throughout the country in connection with the CMP’s Travel Games.
And each summer, the major National Rimfire Sporter Match attracts hundreds of shooters to the shore of Lake Erie at Camp Perry. This year’s Rimfire Sporter Match at Camp Perry will be held on Saturday, August 1st, 2026, with check-in/clinic on Friday, July 31, 2026. The CMP National Rimfire Sporter Rifle Match offers shooters a recreation-oriented competition where they use affordable, smallbore sporter rifles with either scopes or iron sights. All you need are a .22 LR rifle, sling, and ammo.
Rifles may be manually operated or semi-automatic, in three classes: the standard “O Class” for open-sighted rifles, “T-Class” for telescope-sighted rifles, and the “Tactical Rimfire” Class. Firing is done at 50 and 25 yards on a target with a 1.78″ ten-ring. The target is simple enough for a beginner to hit, yet challenging enough that only one competitor in the history of the match has ever fired a perfect 600 score.
Rimfire Sporter Course of Fire
At the Rimfire Sporter Match, competitors complete slow fire prone, rapid fire prone, slow fire sitting or kneeling, rapid fire sitting or kneeling, slow fire standing, and rapid fire standing shot sequences.
What is Required for the Camp Perry Rimfire Sporter Match
Competitors need to bring their own .22 cal. Rimfire rifle(s) and ammunition. Special target shooting equipment, shooting jackets, or shooting gloves are not permitted, but you can bring a spotting scope and ground cloth or shooting mat. The firing points have grass (sometimes a bit wet with rain). Competitors are strongly urged to wear hearing and eye protection. Assistance for disabled competitors is provided.
A free Shooters’ Clinic is usually held in connection with the Rimfire Sport match at Camp Perry. The Clinic covers Rimfire Sporter rules, safety instructions, course of fire, and competition procedures. Shooters who have not previously attended a CMP Rimfire Sporter Match are strongly encouraged to attend.
This week the U.S. Supreme Court issued an important decision on a gun rights case challenging restrictive laws in Hawaii. In Wolford v. Lopez, the Supreme Court held that a Hawaiian law prohibiting concealed carry on private property (and business locations) violated the Second Amendment of the U.S. Constitution.
Fox News explained: “The U.S. Supreme Court ruled against Hawaii on Thursday (6/25/26), handing concealed-carry permit holders a major victory in a 6-3 decision. The Supreme Court sided with the plaintiff in Wolford v. Lopez, who contested Hawaii’s state law requiring a property owner’s explicit permission to allow lawful gun owners to bring firearms into public businesses.” This affected the ability of residents to carry licensed handguns into stores, hotels, and other venues.
“Hawaii’s law at issue here violates the constitutional right to keep and bear arms,” Justice Samuel Alito wrote. “This regime hobbles what the Second Amendment protects: the right of Americans to carry arms for self-defense as they go about their daily lives.”
The ruling reverses a decision by the U.S. Court of Appeals for the Ninth Circuit, which had upheld Hawaii’s restrictions after the state enacted them in response to the Supreme Court’s 2022 Bruen decision.
Here is an analysis of the case from the Second Amendment Foundation (SAF):
For the second week in a row, the U.S. Supreme Court has handed a victory to gun owners after striking down Hawaii’s so-called “Vampire Rule” in Wolford v Lopez.
Last year, the Second Amendment Foundation (SAF) filed an amicus brief urging the Supreme Court to strike the law down. The Hawaii law, similar to statutes found in California, New York and other states, bans carry of firearms on property open to the public — grocery stores, restaurants, gas stations and more — unless the owner posts a sign stating that carry is allowed on the premises. Prior laws permitted lawful carry in businesses open to the public unless the owner affirmatively requested that guns not be carried. The flipping of the default situation – from allowing guns unless denied, to banning all guns unless invited – created a de facto public carry ban that … the Supreme Court has held to violate the Second Amendment.
“Our stance is that one of the most fundamental underlying principles of the Second Amendment is the right to carry in public for self-defense,” said SAF Exec. Director Adam Kraut. “If a business does not want you to carry a firearm on the premises, the burden should be on the proprietor, not the private citizen, which would be in line with the ‘no soliciting’ or ‘no shoes, no shirt, no service’ signs we’re all familiar with. Today the Supreme Court told Hawaii that such transparent attempts at banning constitutionally protected conduct will not be tolerated.”
“The Supreme Court rightfully overturned the Ninth Circuit’s ruling in Wolford and now the Second Amendment rights of Hawaii’s residents are one step closer to being fully restored,” said SAF Exec. V.P. Alan M. Gottlieb. “This law was nothing more than a thinly veiled attempt to disarm peaceable citizens, and we’re grateful the Supreme Court saw through the ruse. With this precedent-setting ruling in hand, other states that have similar laws in place should be on notice – SAF is coming after you[.]”
It is estimated that nearly 21.5 million Americans are currently licensed/permitted to carry concealed weapons. And with the 2022 U.S. Supreme Court decision in NYSRPA v. Bruen, we can expect that number to increase significantly. That landmark case stated that the Second Amendment guarantees citizens the right to bear arms outside their homes.
According to the Crime Prevention Research Center (CPRC), in 2024 8.2% of American adults had permits. That means nearly 21.5 million Americans are licensed to carry a firearm in the United States. Outside of the restrictive states of California and New York, about 9.8% of adults have a permit. Four states currently have over one million active permit holders: Florida, Georgia, Pennsylvania, and Texas. And interestingly, about 47% of Americans (over 157.6 million people) reside in “Constitutional Carry” states that allow handgun carry without a specific license.
There are now seven (7) major business entities which provide insurance coverage and legal services for CCW holders. These providers are listed below. We suggest, BEFORE you commit to any particular policy/membership, you comparison shop at least three different options. We also recommend you read the full 3400-word GunDigest Article that examines, in detail, the coverage offered by these seven companies:
Factors to Consider When Choosing a Gun Insurance Program:
Attorney Fees and Expert Fees
The key benefit of any CCW insurance plan is coverage for attorneys fees. If you need a lawyer for a civil case or criminal defense, the fees pile up very fast. Good lawyers can charge $400-$500 per hour, and a trial can go on for many days. GunDigest explains: “If your case goes to trial you might find a bill that runs up to six figures.” You should check to see if a policy covers lawyer retainer, hourly fees, expert fees, AND potential damages.
Bail Bond Coverage
If you are involved in an incident, and an arrest is made, you want to avoid spending time in a jail cell. That’s why it’s important to have a CCW insurance plan that will quickly provide funding for bail bonds. As GunDigest notes: “bail-bond coverage is typically part of a sound concealed carry insurance policy”.
Multi-State Coverage
Gun laws vary among states, and state insurance laws vary as well. This affects the coverage an insurance program can and will provide. When choosing a policy, ask questions to determine how coverage may vary from state to state. With some programs you can purchase additional coverage for trips outside your home state. These can be time-limited for cost savings.
Policy Limits (Dollar Amounts)
When considering a CCW insurance program you need to look at the policy limits — the amount the program might pay to provide legal assistance and potentially settle a claim. You need to read the fine print here, just as you would with an automobile or home policy.
The detailed GunDigest article on CCW Insurance Coverage, notes that there are some additional factors to consider when choosing CCW Insurance:
“You’ll find there are other areas covered by some concealed carry insurance plans worth contemplating. Many of them fall within the policies themselves, however, some cost extra. In many cases, CCW policies go well beyond legal expenses and cover some other aspects you might not have considered:”
Crime Scene Clean Up
Negligent Discharge
Spouse And Family Self-Defense
Property Damage
Firearms Replacement
Work Loss Coverage
Personal Use Of Firearm (non-defensive)
The 30 BR is an amazing little cartridge. However, 30 BR shooters do have to neck-up 6mmBR or 7mmBR brass and then deal with some issues that can arise from the expansion process. One of our Forum members was concerned about the donut that can form at the new (expanded) neck-shoulder junction. Respected bullet-maker Randy Robinett offers tips on how to deal with the “dreaded donut”.
The Forum member was concerned about thinning the brass if he turned his 30 BR necks after expansion: “Everything I have found on 30 BR case-forming says to simply turn off the bulge at the base of the neck caused by the old 6BR shoulder. I expanded my first case and measured the neck at 0.329″ except on the donut, where it measures 0.335″. Looking inside the case… reveals a groove inside the case under the donut. Now, it is a fact that when I turn that neck and remove the donut, the groove is still going to be there on the inside? That means there is now a thin-spot ring at the base of the neck that is .005 thinner than the rest of the neck. Has anyone experienced a neck cracking on this ring?”
Randy Robinett, who runs BIB Bullet Co., is one of the “founding fathers” of the 30 BR who help prove and popularize the 30 BR for benchrest score shooting. Randy offers this advice on 30 BR case-forming:
While the thinner neck-base was one of our original concerns, unless one cuts too deeply INTO the shoulder, it is not a problem. For my original 30BR chamber, thirty (30) cases were used to fire 6,400 rounds through the barrel. The cases were never annealed, yet there were ZERO case failures, neck separations, or splits. The case-necks were turned for a loaded-round neck diameter of .328″, and, from the beginning, sized with a .324″ neck-bushing.
The best method for avoiding the ‘bulge’ is to fire-form prior to neck-turning (several methods are successfully employed). Cutting too deeply into the shoulder can result in case-neck separations. I have witnessed this, but, with several barrels and thousands to shots fired, have not [personally] experienced it. The last registered BR event fired using that original barrel produced a 500-27x score and a second-place finish. [That’s] not bad for 6K plus shots, at something over 200 firings per case.
Check Out the 30 BR Cartridge Guide on AccurateShooter.com
You’ll find more information on 30 BR Case-forming in our 30 BR Cartridge Guide. Here’s a short excerpt from that page — some tips provided by benchrest for score and HBR shooter Al Nyhus:
30 BR Case-Forming Procedure by Al Nyhus
The 30 BR cartridge is formed by necking-up 6mmBR or 7mmBR brass. You can do this in multiple stages or in one pass. You can use either an expander mandrel (like Joe Entrekin does), or a tapered button in a regular dies. Personally, I use a Redding tapered expander button, part number 16307. This expands the necks from 6mm to .30 cal in one pass. It works well as long as you lube the mandrel and the inside of the necks. I’ve also used the Sinclair expander body with a succession of larger mandrels, but this is a lot more work and the necks stay straighter with the Redding tapered button. This button can be used in any Redding die that has a large enough inside diameter to accept the BR case without any case-to-die contact.
Don’t be concerned about how straight the necks are before firing them the first time. When you whap them with around 50,000 psi, they will straighten out just fine! I recommend not seating the bullets into the lands for the first firing, provided there is an adequate light crush-fit of the case in the chamber. The Lapua cases will shorten from approx. 1.550″ to around 1.520″ after being necked up to 30-caliber I trim to 1.500″ with the (suggested) 1.520 length chambers. I don’t deburr the flash holes or uniform the primer pockets until after the first firing. I use a Ron Hoehn flash hole deburring tool that indexes on the primer pocket, not through
Photo shows Joseph (“Skeet”) Borden, with match rifle built by his son, Jim Borden.
On this Father’s Day 2025, we celebrate three pairs of fathers and sons who enjoyed competitive shooting together. This story can remind us how shooting together can help build life-long bonds between fathers and sons.
Joseph Borden and Jim Borden
A while back, Jim Borden made a post on his Facebook Page that made us think about how shooting can build important connections between father and son. Jim recalled how he would go to Piedmont, North Carolina with his father every year for a shooting match: “17 years ago this weekend was the last time dad was able to make the trek to North Carolina for the annual Groundhog contest and the match at Piedmont. Loved the time we spent together. Dad shot competitive benchrest with me from 1980 until June 2001. He passed in August 2001.”
This prompted others shooters to respond with cherished memories of their own fathers:
“I’d give a year’s pay to have my Dad back for an hour, let alone a day. Spend all the time you can with them while they’re here”. — Kerry S.
“I think how lucky some folks are to look back in life and have fond memories of doing things with their parents that both enjoyed. I have missed my dad for 44 years and think of him every time I hunt, fish, trap or work on a household project. We did it all together.” — Bill McC.
Another poster explained how he now attends matches with his own young son:
“The time you spent with your father meant as much or more to him. Always cherish [those memories], as I know you will. Last year, I spent … over 400 hours with my then 10-year-old son going to rifle matches. This year will be similar. This photo was from today of my 11-year-old son.” — John C.
So here’s a message to all dads — take some time to introduce your sons (and daughters) to the joys of shooting. Spend quality time with your youngsters while you can. Time passes quickly, boys grow up into men. Ensure you enjoy a life outdoors together whenever you can.
About Jim Borden and Borden Accuracy
Jim began shooting high power silhouette and benchrest matches in the mid 1970s while working for a Fortune 500 company as an engineer. In the early 1980s he began building rifles for himself and then for others. Jim has a background as a gunsmith, machinist, registered mechanical engineer, engineering instructor, project manager, hunter, and benchrest competitor. In benchrest competitions he has set ten world records and won 11 National Championships thereby earning induction into the Benchrest Hall of Fame. Jim also served six terms as President of the International Benchrest Shooters (IBS).
Jim operates Borden Rifles/Borden Accuracy with his wife Joan, sons Jim Junior and John, daughter Andrea Mecca and son-in-law John (Mike) Mecca. Jim is also an outstanding photographer.
Another Father/Son Duo — Sam Hall and Hunter Hall
Sam Hall is a multi-time IBS 600-yard Shooter of the Year, who holds many IBS mid-range records. It’s tough to beat Sam when he’s on his game. But it looks like Sam has a worthy challenger — his own son Hunter Hall, now 15. At age 12, Hunter won the North Carolina State 1000-yard Light Gun Group Title.
At a very young age, Hunter Hall showed an interest in his father’s shooting hobby. It turns out Hunter has the God-given talent for hitting the target. Yes there would be another champion in the Hall family. Here is Hunter, at age 12, winning the NC 1000-Yard Group title. Not bad for a kid not even in High School yet!
Even at just 6 years of age, Hunter showed a keen interest in shooting. Back in 2012 Sam reported: “This weekend we practiced freehand shooting with his BB gun at cans. After that I was needing to zero my Light Gun and get started with a few loads at 100 yards. To my amazement my 6-year-old wanted to accompany me. I could not believe it when he wanted to shoot my competition rifle. I had just put a new barrel and scope on it and needed to zero it. After two shots to get it zeroed he hit a .25 inch dot at 100 yards. I let him do everything — loading it, ejecting rounds, and even working my Farley joystick rest.”
Ken Klemm and Ian Klemm — Father and Son F-TR Aces
Over the last 30 years, a family saga has been playing out in rural Wisconsin: a father fosters within his son the joy of competitive target shooting. It started in a basement shooting range of a small-town elementary school, shooting single-shot rimfire target rifles while cementing the fundamentals of sight alignment, breathing, trigger control, and safety. With a background of competitive smallbore shooting in school and the U.S. Navy, Ken Klemm coached his son, Ian, in a father/son indoor winter shooting league. Ian was determined to shoot as well or better than his Dad and would pursue that goal for the next 30 years. Even after his engineering career took him to the Washington DC area for defense-related work, Ian continued to compete with his Dad by mailing “postal match” targets back and forth for many years.
Father and son shooting together. Her Ian spots for his father Ken Klemm, who is shooting.
Ian has now risen to the pinnacle of his F-TR discipline. Ian Klemm has now won three National F-TR Championships in four years. Ian captured back-to-back titles in 2017 and 2018, winning at Lodi, WI in 2017, and Raton, NM in 2018. Ian also finished second at the 2019 Nationals. Ian put on another great performance to win the F-TR National title in 2020 under very challenging conditions.
Here is Ian with proud parents Karen and Ken Klemm after Ian won his Second Straight F-TR National Championship in 2018. Father Ken also competed at the 2018 F-Class Nationals, shooting great in both individual and team events.
On Father’s Day, time spent together is more important than any gift that comes in a box…
Today is Father’s Day, a special Sunday when we acknowledge our patriarchs and show our gratitude for all their hard work and sacrifice on our behalf, and the love they have shown us over the years. If you’re lucky, you’re reading this after having spent a day at the shooting range (or the local fishing hole, or golf course) with your Dad. The important thing is to be together with “Pops” and do something you both enjoy together. If you haven’t finalized your Father’s Day planning, here are some suggestions:
1. Hand-wash and wax your father’s truck or car.
2. Clean your dad’s rifles, or help him put together some handloads.
3. Take your dad out to a live music concert, go to a ball game, or maybe head down to the local fishin’ hole.
4. Go for a hike together or just a drive in the country.
5. Head down to Sears or the local hardware store and let you Dad pick out some new tools.
6. Sit down with your dad, bring a note pad, and ask him to tell you some stories about his youth, or his military experience. This Editor learned some amazing things about his own father this way.*
Whatever you choose to do with your father, use your time wisely. Turn off your computer, and go be with your father today. Do something with him that makes him smile. The time spent together is more important than any gift that comes in a box. And, if he lives far from you, give him a call and let him know how important he is to your life. Remind him of the old adage: “Good fathers make good sons”.
When my father, a disabled WW2 Army vet, passed away I received the flag that was draped on his coffin. On most days I fly one of those nylon flags that you can pick up at hardware or department stores. But on holidays, like today, and his birthday, Dad’s flag is out there snapping in the breeze on top of the pole. I find myself talking to him as it gets put up in the morning and comes down at sunset. Hope when the time comes one of my boys will fly my flag. — Bill Slattery Jr.
My father used to play with my brother and me in the yard. Mother would come out and say, “You’re tearing up the grass”! “We’re not raising grass,” Dad would reply, “We’re raising boys”. — Harmon Killebrew.
* My father was a Lieutenant in the U.S. Army in WWII. He was part of three different amphibious landings — North Africa, Sicily, and Operation Dragoon in the South of France. During one conversation about the French invasion, he showed me the invasion armband he wore in 1944. He had kept that band, with its faded American flag, for over 50 years. It is now a cherished memento of his life and service to his country.
Based on the questions we get on a daily basis on our 800 (Customer Support) line, twist is one of the most misunderstood subjects in the gun field. So let’s look deeper into this mystery and get a better understanding of what twist really means.
When you see the term 1:14″ (1-14) or 1:9″ twist, just exactly what does this mean? A rifle having a 1:14″ twist means the bullet will rotate one complete revolution every fourteen inches of the barrel. Naturally a 1:9″ turns one time every nine inches that it travels down the barrel. Now, here’s something that some people have trouble with. I’ve had calls from shooters thinking that a 1:14″ twist was faster than a 1:9″ because the number was higher with the 1:14″. The easiest way to remember this is the higher the number, the slower the twist rate is.
Now, the biggest misconception is that if a shooter has a .223 with a 1:8″ twist, his rifle won’t stabilize a 55gr bullet or anything lighter. So let’s look at what is required. The longer a bullet is for its diameter, the faster the twist has to be to stabilize it. In the case of the .223 with a 1:8″ twist, this was designed to stabilize 80gr bullets in this diameter. In truth the opposite is true. A 1:8″ will spin a 55gr faster than what is required in order to stabilize that length of bullet. If you have a bullet with good concentricity in its jacket, over-spinning it will not [normally] hurt its accuracy potential. [Editor’s Note: In addition, the faster twist rate will not, normally, decrease velocity significantly. That’s been confirmed by testing done by Bryan Litz’s Applied Ballistics Labs. There may be some minor speed loss.]
Many barrel-makers mark the twist rate and bore dimensions on their barrel blanks.
Think of it like tires on your truck. If you have a new set of tires put on your truck, and they balance them proper at the tire shop, you can drive down a street in town at 35 MPH and they spin perfect. You can get out on the highway and drive 65 MPH and they still spin perfect. A bullet acts the same way.
Once I loaded some 35gr HP bullets in a 22-250 Ackley with a 1:8″ twist. After putting three shots down range, the average velocity was 4584 FPS with an RPM level of 412,560. The group measured .750″ at 100 yards. This is a clear example that it is hard to over-stabilize a good bullet.
Twist-rate illustration by Erik Dahlberg courtesy FireArmsID.com. Krieger barrel photo courtesy GS Arizona.
In the case of United States v. Hemani, the U.S. Supreme Court (SCOTUS) ruled unanimously (9-0) that the use of marijuana or cannabis can not be used as a basis to deny a citizen his Second Amendment right to bear arms, and specifically to own a licensed handgun.
In U.S. v. Hemani, the U.S. Supreme Court ruled 9-0 that the federal ban on firearm possession by “unlawful users” of controlled substances violates the Second Amendment when applied to routine marijuana users who are not shown to be dangerous or intoxicated while possessing a gun. This SCOTUS decision affirmed the rule of the Fifth Circuit removing criminal charges against the defendant Ali Hemani.
Case Background & Facts: Ali Danial Hemani, a Texas man, legally surrendered his licensed handgun and pointed agents to his marijuana stash during an FBI search. He was neither accused of using the weapon nor intoxicated while possessing it.
The Charge: The government prosecuted him under 18 U.S.C. § 922(g)(3), which makes it a felony to own a firearm while being an “unlawful user of or addicted to” a controlled substance.
The Challenge: Hemani moved to dismiss the indictment, arguing that this categorical ban violated his Second Amendment rights under the Supreme Court’s Bruen standard.
Supreme Court Decision
The Court found that stripping millions of state-legal marijuana consumers of their fundamental constitutional rights without showing individualized dangerousness stretches too far. Writing for the unanimous Court in the majority opinion, Justice Neil Gorsuch rejected the government’s argument that Founding-era laws against “habitual drunkards” historically justified categorically banning marijuana users from owning firearms.
A concurring opinion by Justice Thomas cites the Firearms Policy Coalition (FPC) amicus brief multiple times to argue that, “[a]s a matter of both original meaning and this Court’s precedents, Congress lacks the power to regulate the possession of firearms solely on the ground that they crossed state lines at some point in the past.”
Support from Both Civil Rights Groups and Gun Rights Organizations:
The case had unconventional alliances, with organizations like the American Civil Liberties Union (ACLU) and the NRA filing briefs in support of Hemani. Here are highlights from the ACLU case report:
The U.S. Supreme Court unanimously held today in U.S. v. Hemani that the government cannot prosecute someone as a felon simply for using marijuana and owning a gun that is securely stored.
In 2023, the federal government charged Ali Hemani under 18 U.S.C. § 922(g)(3), which makes it a felony for someone who is an “unlawful user of” or “addicted to” a controlled substance to possess a firearm. Hemani was charged under this statute as an “unlawful user” based on his use of marijuana and the fact that he owned a firearm that was safely secured in his home. The court held that the government’s prosecution of Mr. Hemani under 18 U.S.C. § 922(g)(3) based on his marijuana use violates the Second Amendment.
“Today’s unanimous 9-0 decision makes it clear that the government cannot make it crime for people to own a gun, which the Supreme Court has held is a fundamental constitutional right, simply because they use marijuana,” said Cecillia Wang, legal director at the American Civil Liberties Union.
CLICK HERE for Reason Magazine U.S. v. Hermani case analysis which includes an audio case report.
Barrel-maker Dan Lilja’s website, RifleBarrels.com has an excellent FAQ page that contains a wealth of useful information. On the Lilja FAQ Page you’ll find answers to many commonly-asked questions. For example, Dan’s FAQ addresses the question of barrel life. Dan looks at factors that affect barrel longevity, and provides some predictions for barrel life, based on caliber, chambering, and intended use.
NOTE: This article was very well-received when it was first published. We are reprising it for the benefit of readers who missed it the first time.
Dan cautions that “Predicting barrel life is a complicated, highly variable subject — there is not a simple answer. Signs of accurate barrel life on the wane are increased copper fouling, lengthened throat depth, and decreased accuracy.” Dan also notes that barrels can wear prematurely from heat: “Any fast varmint-type cartridge can burn out a barrel in just a few hundred rounds if those rounds are shot one after another without letting the barrel cool between groups.”
Q. What Barrel Life, in number of rounds fired, can I expect from my new barrel?
A: That is a good question, asked often by our customers. But again there is not a simple answer. In my opinion there are two distinct types of barrel life. Accurate barrel life is probably the type most of us are referencing when we ask the question. But there is also absolute barrel life too. That is the point where a barrel will no longer stabilize a bullet and accuracy is wild. The benchrest shooter and to a lesser extent other target shooters are looking at accurate barrel life only when asking this question. To a benchrest shooter firing in matches where group size is the only measure of precision, accuracy is everything. But to a score shooter firing at a target, or bull, that is larger than the potential group size of the rifle, it is less important. And to the varmint hunter shooting prairie dog-size animals, the difference between a .25 MOA rifle or one that has dropped in accuracy to .5 MOA may not be noticeable in the field.
The big enemy to barrel life is heat. A barrel looses most of its accuracy due to erosion of the throat area of the barrel. Although wear on the crown from cleaning can cause problems too. The throat erosion is accelerated by heat. Any fast varmint-type cartridge can burn out a barrel in just a few hundred rounds if those rounds are shot one after another without letting the barrel cool between groups. A cartridge burning less powder will last longer or increasing the bore size for a given powder volume helps too. For example a .243 Winchester and a .308 Winchester both are based on the same case but the .308 will last longer because it has a larger bore.
And stainless steel barrels will last longer than chrome-moly barrels. This is due to the ability of stainless steel to resist heat erosion better than the chrome-moly steel.
Barrel Life Guidelines by Caliber and Cartridge Type
As a very rough rule of thumb I would say that with cartridges of .222 Remington size you could expect an accurate barrel life of 3000-4000 rounds. And varmint-type accuracy should be quite a bit longer than this.
For medium-size cartridges, such as the .308 Winchester, 7×57 and even the 25-06, 2000-3000 rounds of accurate life is reasonable.
Hot .224 caliber-type cartridges will not do as well, and 1000-2500 rounds is to be expected.
Bigger magnum hunting-type rounds will shoot from 1500-3000 accurate rounds. But the bigger 30-378 Weatherby types won’t do as well, being closer to the 1500-round figure.
These numbers are based on the use of stainless steel barrels. For chrome-moly barrels I would reduce these by roughly 20%.
The .17 and .50 calibers are rules unto themselves and I’m pressed to predict a figure.
The best life can be expected from the 22 long rifle (.22 LR) barrels with 5000-10,000 accurate rounds to be expected. We have in our shop one our drop-in Anschutz barrels that has 200,000 rounds through it and the shooter, a competitive small-bore shooter reported that it had just quit shooting.
Remember that predicting barrel life is a complicated, highly variable subject. You are the best judge of this with your particular barrel. Signs of accurate barrel life on the wane are increased copper fouling, lengthened throat depth, and decreased accuracy.
Benchrest Barrel Life — You May Be Surprised
I thought it might be interesting to point out a few exceptional Aggregates that I’ve fired with 6PPC benchrest rifles with barrels that had thousands of rounds through them. I know benchrest shooters that would never fire barrels with over 1500 shots fired in them in registered benchrest matches.
I fired my smallest 100-yard 5-shot Aggregate ever in 1992 at a registered benchrest match in Lewiston, Idaho. It was a .1558″ aggregate fired in the Heavy Varmint class. And that barrel had about 2100 rounds through it at the time.
Another good aggregate was fired at the 1997 NBRSA Nationals in Phoenix, Arizona during the 200-yard Light Varmint event. I placed second at this yardage with a 6PPC barrel that had over 2700 rounds through it at the time. I retired this barrel after that match because it had started to copper-foul quite a bit. But accuracy was still good.
Want to improve your understanding of Ballistics, Bullet Design, Bullet Pointing, and other shooting-related tech topics? Well here’s a treasure trove of gun expertise. Applied Ballistics offers dozens of FREE tech articles on its website. Curious about Coriolis? — You’ll find answers. Want to understand the difference between G1 and G7 BC? — There’s an article about that.
“Doc” Beech, technical support specialist at Applied Ballistics says these articles can help shooters working with ballistics programs: “One of the biggest issues I have seen is the misunderstanding… about a bullet’s ballistic coefficient (BC) and what it really means. Several papers on ballistic coefficient are available for shooters to review on the website.”
Credit Shooting Sports USA Editor John Parker for finding this great resource. John writes: “Our friends at Applied Ballistics have a real gold mine of articles on the science of accurate shooting on their website. This is a fantastic source for precision shooting information[.] Topics presented are wide-ranging — from ballistic coefficients to bullet analysis.”
Here are six (6) of our favorite Applied Ballistics articles, available for FREE to read online. There are dozens more, all available on the Applied Ballistics Education Webpage. After Clicking link, select Plus (+) Symbol for “White Papers”, then find the article(s) you want in the list. For each selection, then click “Download” in the right column. This will send a PDF version to your device.
The 30 BR is an amazing little cartridge. However, 30 BR shooters do have to neck-up 6mmBR or 7mmBR brass and then deal with some issues that can arise from the expansion process. One of our Forum members was concerned about the donut that can form at the new (expanded) neck-shoulder junction. Respected bullet-maker Randy Robinett offers tips on how to deal with the “dreaded donut”.
Joseph Borden and Jim Borden
Today is Father’s Day, a special Sunday when we acknowledge our patriarchs and show our gratitude for all their hard work and sacrifice on our behalf, and the love they have shown us over the years. If you’re lucky, you’re reading this after having spent a day at the shooting range (or the local fishing hole, or golf course) with your Dad. The important thing is to be together with “Pops” and do something you both enjoy together. If you haven’t finalized your Father’s Day planning, here are some suggestions:
