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November 20th, 2012

Barrel Depreciation and the True Cost of Shooting

reloading shot cost barrelHow much does it cost you to send a round downrange? Ask most shooters this question and they’ll start adding up the cost of components: bullets, powder, and primers. Then they’ll figure in the cost of brass, divided by the number of times the cases are reloaded.

For a 6BR shooting match bullets, match-grade primers, and 30 grains of powder, in brass reloaded ten times, this basic calculation gives us a cost per shot of $0.51 (fifty-one cents):

Bullet $0.33 (Berger 105 VLD) Grafs.com
Primer $0.02 (Tula/Wolf SmR magnum) PVI
Powder $0.08 (Reloder 15 @ $19.15/lb) PVI
Brass $0.08 (Lapua @ $82.30/100, 10 reloads)

Total = $0.51 per round

NOTE: If you shoot a larger caliber that burns more powder, and uses more expensive bullets and/or brass, your total cost per round will be higher than $0.51.

$1.00 Per Shot True Cost? Yikes!
OK, we’ve seen that it costs about $0.51 per round to shoot a 6BR. Right?

Wrong! — What if we told you that your ACTUAL cost per round might be closer to double that number? How can that be? Well… you haven’t accounted for the cost of your barrel. Every round you fire down that tube expends some of the barrel’s finite life. If, like some short-range PPC shooters, you replace barrels every 700 or 800 rounds, you need to add $0.60 to $0.70 per round for “barrel cost.” That can effectively double your cost per round, taking it well past the dollar per shot mark.

Calculating Barrel Cost Per Shot
In the table below, we calculate your barrel cost per shot, based on various expected barrel lifespans.

As noted above, a PPC barrel is typically replaced at 700-800 rounds. A 6.5-284 barrel can last 1200+ rounds, but it might need replacement after 1000 rounds or less. A 6BR barrel should give 2000-2600 rounds of accurate life, and a .308 Win barrel could remain competitive for 4,000 rounds or more.

The table below shows your barrel cost per shot, based on various “useful lives.” We assume that a custom barrel costs $540.00 total to replace. This includes $300.00 for the barrel itself, $200.00 for chambering/fitting (conservative number), and $40.00 in 2-way shipping costs. These are typical costs shooters will encounter when ordering a rebarreling job.

The numbers are interesting. If you get 2000 rounds on your barrel instead of 1000, you save $0.27 per shot. However, extending barrel life from 2000 to 3000 rounds only saves you $0.09 per round. The longer you keep your barrel the more you save, but the savings per shot decreases as the round count increases.

How to Reduce Your TRUE Cost per Round
What does this tell us? First, in figuring your annual shooting budget, you need to consider the true cost per round, including barrel cost. Second, if you want to keep your true costs under control, you need to extend your barrel life. This can be accomplished in many ways. First, you may find that switching to a different powder reduces throat erosion. Second, if you’re able to slow down your shooting pace, this can reduce barrel heat, which can extend barrel life. (A varminter in the field is well-advised to switch rifles, or switch barrels, when the barrel gets very hot from extended shot strings.) Third, modifying your cleaning methods can also extend the life of your barrel. Use solvents that reduce the need for aggressive brushing, and try to minimize the use of abrasives. Also, always use a properly fitting bore guide. Many barrels have been prematurely worn out from improper cleaning techniques.

Permalink - Articles, Reloading, Tech Tip 12 Comments »
March 10th, 2008

Barrel Life and the TRUE Cost of Shooting

How much does it cost you to send a round downrange? Ask most shooters this question and they’ll start adding up the cost of components: bullets, powder, and primers. Then they’ll figure in the cost of brass, divided by the number of times the cases are reloaded.

For a 6BR shooting match bullets, match primers, and 30 grains of powder, in brass reloaded a dozen times, this basic calculation gives us a cost per shot of $0.46 (forty-six cents):

Bullet $0.30 (Berger 105 VLD)
Primer $0.03 (Fed 205m)
Powder $0.08 (Varget @ $18.00/lb)
Brass $0.05 (Lapua priced at $60/100, 12 reloads)

Total $0.46 per round

$1.00 Per Shot True Cost? Yikes!
OK, we’ve seen that it costs about $0.46 per round to shoot a 6BR. Right?

Wrong! — What if we told you that your ACTUAL cost per round might be closer to double that number? How can that be? Well… you haven’t accounted for the cost of your barrel. Every round you fire down that tube expends some of the barrel’s finite life. If, like some short-range PPC shooters, you replace barrels every 700 or 800 rounds, you need to add $0.60 to $0.70 per round for “barrel cost.” That can effectively double your cost per round, taking it well past the dollar per shot mark.

Calculating Barrel Cost Per Shot
In the table below, we calculate your barrel cost per shot, based on various expected barrel lifespans.

As noted above, a PPC barrel is typically replaced at 700-800 rounds. A 6.5-284 barrel can last 1200+ rounds, but it might need replacement after 1000 rounds or less. A 6BR barrel should give 2200-3000 rounds of accurate life, and a .308 Win barrel could remain competitive for 4,000 rounds or more.

The table below shows your barrel cost per shot, based on various “useful lives.” We assume that a barrel costs $500.00 total to replace. This includes $300.00 for the barrel itself, $160.00 for chambering/fitting, and $40.00 in 2-way shipping costs. Yes, you may have a smith that works for less, but these are typical costs shooters will encounter when ordering a rebarreling job.

The numbers are interesting. If you get 2000 rounds on your barrel instead of 1000, you save $0.25 per shot. However, extending barrel life from 2000 to 3000 rounds only saves you $0.08 per round.

NOTE: We assume component costs of $0.46 per round based on our 6BR example. If you shoot a larger caliber that burns more powder, and uses more expensive bullets and/or brass, your total cost per round will be higher.

How to Reduce Your TRUE Cost per Round
What does this tell us? First, in figuring your annual shooting budget, you need to consider the true cost per round, including barrel cost. Second, if you want to keep your true costs under control, you need to look at ways to extend your barrel life. This can be accomplished in many ways. First, you may find that switching to a different powder reduces throat erosion. Second, if you’re able to slow down your shooting pace, this can reduce barrel heat, which can extend barrel life. (A varminter in the field is well-advised to switch rifles, or switch barrels, when the barrel gets very hot from extended shot strings.) Third, modifying your cleaning methods can also extend the life of your barrel. Use solvents that reduce the need for aggressive brushing, and try to minimize the use of abrasives. Also, always use a properly fitting bore guide. Many barrels have been prematurely worn out from improper cleaning techniques.

Permalink Bullets, Brass, Ammo, Tech Tip No Comments »
April 20th, 2015

Darrell Does 2500 Yards — With a .338 Allen Magnum

What cartridge would your chose to hit targets at long range … extremely long range, as in 2500 yards? Well, for ace competitive shooter Darrell Buell, the answer is the .338 Allen Magnum, a .408 Cheytac necked down to .338. This “super-sized” cartridge flings .338-caliber, 300-grain Berger Hybrid bullets at 3450 fps. That delivers some impressive ballistics at ultra-long range. Darrell got to “test-drive” a .338 Allen Magnum rifle at 2500 yards (1.42 miles) while teaching a Long-Range Seminar at the Legion Operator Training Group (OTG) Facility in Blakely, Georgia.* The rifle belonged to Christopher Sykes.

.338 Allen Cheytac Cheyenne Tactical long range shooting cartridge Kirby Allen Mile Shot

Shown below is the 338 Allen Magnum (AM) next to a .308 Winchester round loaded to an extremely long OAL. The .338 Allen Magnum is a wildcat based off the .408 Cheytac (Cheyenne Tactical) parent case. The cartridge’s inventor, Kirby Allen, states: “The .338 Allen Magnum, when loaded with a 300gr SMK, offers a legit 500 to 600 FPS velocity advantage over the 338 Lapua Magnum”.

.338 Allen Cheytac Cheyenne Tactical long range shooting cartridge Kirby Allen Mile Shot

Darrell says: “Yeah, it’s a beast [but] with that brake, it kicks less than my .308 competition rifle. It’s got more energy at 2500 yards than a .45 ACP has at the muzzle. The .338 Allen cartridges are standing next to the SEB Joy-pod, along with a standard .338 Lapua Magnum cartridge. With the excellent muzzle brake on the .338 Allen, I could spot my own hits with just the slightest twitch of the joystick. The rifle was not particularly heavy, consequently the pod would hold the crosshairs where you left them without a hand on the joystick.”

(more…)

Permalink Bullets, Brass, Ammo, Tactical 9 Comments »
April 9th, 2012

Colt Releases New Gas Piston AR Platform Rifle — LE6940P

Six decades after the introduction of the M16, Colt has added a gas piston system to the venerable AR15. Colt put a gas piston in this new AR-platform rifle in order to improve reliability and reduce fouling. The new gas-piston Colt AR, designated the LE6940P, will be sold to both civilians and law enforcement agencies. In selling a gas-piston AR, Colt is following the lead of Heckler & Koch (HK 416) and other manufacturers who have found a market among buyers seeking a lower-maintenance AR with significantly less internal powder fouling than the original direct-gas-impingement AR design.

Colt LE6940p

Colt’s product press release declares: “Colt Defense LLC … has advanced its one-piece monolithic upper receiver to introduce the LE6940P. This modular carbine has an articulating link piston (ALP) operating system and offers shooters a highly accurate, lightweight and easy-to-clean AR-platform rifle with an extended lifespan. The advanced piston carbine (APC) is a lightweight, highly accurate alternative to the traditional direct gas impingement system found in most ARs. The LE6940P utilizes a unique articulating link piston (ALP) operating system, which reduces inherent stress in the piston stroke by allowing for deflection and thermal expansion. As a result, shooters are offered a highly accurate firing experience and the weapon’s lifespan is extended.”

Piston Design Developed for U.S. Military
Colt LE6940p“The new LE6940P puts to use a new, improved version of a piston system that Colt originally pioneered for the U.S. Army,” said David Ridley, Vice President of Colt Defense LLC. Ridley added: “Colt was the first to put a piston system in an AR, and we have continued to improve on that system since. Now, any civilian shooter or law enforcement professional has the opportunity to shoot using this superior piston-operated AR.”

Monolithic Upper with Extended Rail
The LE6940P weighs just over 6.5 pounds, and measures 35 inches with stock extended. The rifle is chambered in .223 Rem (5.56×45 NATO) and uses standard AR15 magazines. Colt delivers the LE6940P with a full-length rail running from the rear of the upper receiver to the front sight. This allows many mounting options for sights and accessories. Colt has also includes a back-up iron sight (BUIS) and a folding front sight. The lower receiver is marked “Piston Carbine” and comes with a Colt/Rogers Super-Stoc M4 H-buffer stock kit with cam-lock lever, push-button QD swivel, and accessory kit. The standard barrel is a 16.5″-long M4-type contour with flash-hider. CLICK HERE for large photos of the internals, plus close-ups of the folding sights.

Permalink Gunsmithing, New Product 2 Comments »