308 Marlin Express

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Notes from the Lab: .308 Marlin Express The .308 Marlin Express was introduced in 2007 as a joint effort between Marlin Firearms and Hornady Manufacturing. The year prior, Hornady began offering Flex-Tip bullets in .30-30 Winchester factory loads. These spitzer profile bullets feature a soft rubber tip that allows their use in tubular magazines without resulting in primer set-off. The next logical step was to create a new cartridge that would offer greater performance than the .30-30 WCF while using the Flex-Tip technology. The .308 Marlin Express was the result, which comes within approximately 100 fps of duplicating .308 Winchester ballistics (when both are used in a 22-inch barrel). The new cartridge is based on the .308 Winchester case, but features a semi-rim for proper function in lever-action rifles and has been shortened (1.920 inches) and retains the same 20-degree shoulder. Shortening it allows use of low drag 140- and 160-grain bullets that offer a high B.C. of .335 and .395, respectively. (Note: These are different than FTX bullets designed for the .30-30 Winchester and should not be interchanged.) Due to the straight-pull nature of the Marlin extractor, which does not have the same camming power associated with a turn-bolt action, maximum average pressures are limited to 47,500 psi. At this pressure level, cartridges extract smoothly and reliably. Another feature that helped achieve targeted ballistics was the development of a new propellant specifically engineered for this application. Current Hornady factory loads advertise a 140-grain MonoFlex bullet at 2,800 fps, or a 160-grain FTX at 2,660 fps, while Remington offers a 150-grain Soft Point at 2,725 fps. From the 21 ¾-inch barrel of a Marlin Model 308MX test rifle (factory listed at 22-inches), velocities clocked 2,720, 2,585 and 2,626 fps, respectively. Although several powders gave excellent accuracy, including IMR-8208 XBR, Hodgdon Varget, H- 4895, Ramshot TAC, Accurate 2520, Winchester 748, Norma 203-B, Alliant RL-15 and Power Pro 2000- MR, Leverevolution yielded the highest velocities and closely duplicated factory load performance. Most loads using the 140- and 160-grain Hornady bullets proved capable of around one inch 100 yard (three- and four-shot) groups with the aid of a scope. Cases should be full-length sized to assure easy re-chambering and bullets should be firmly roll- crimped in place to prevent being deep seated when subjected to magazine spring pressure and recoil. .

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Hornady 2006 Catalog
2006 CATALOG Accurate. Deadly. Dependable. Setting the standard . again! See page 21-22 Your source for bullets, ammunition and reloading products. NEW for 2006! LEVEREVOLUTION™ 416 RIGBY 338 LAPUA 20 GAUGE SST™ SHOTGUN SLUG 500 S&W EVOLUTION™ BULLETS AMMUNITION RELOADING TOOLS & ACCESSORIES 17 Cal. 25 gr. V-MAX .................................................. pg. 8 416 RIGBY 400 gr. RN InterBond ........................pg. 30 New & Improved Die Sets ...................................pg. 67 22 Cal. 80 gr. A-MAX ...............................................pg. 15 416 RIGBY 400 gr. FMJ/ENC .................................pg. 35 Blank Cowboy Action Dies .................................pg. 72 338 Cal. 250 gr. BTHP Match ...............................pg. 15 6.8MM SPC 110 gr. BTHP/WC ..............................pg. 33 Case Activated Powder Drop ............................pg. 53 6.8MM SPC 110 gr. V-MAX ...................................pg. 28 Quick Change Powder Die .................................pg. 53 AMMUNITION 375 H&H 300 gr. RN InterBond ...........................pg. 36 Pistol Rotor & Metering Assembly ..................pg. 59 30-30 WIN 160 LEVEREVOLUTION™ ......................... pg. 21 460 S&W 200 gr. SST ...............................................pg. 43 Pistol Micrometer for new Rotor .....................pg. 59 35 REM 200 gr. LEVEREVOLUTION™ ......................... pg. 21 500 S&W 300 gr. Evolution™ ................................pg. 43 Powder Through Expanders ...............................pg. 53 444 Marlin 265
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30-30 Winchester 1 .30-30 Winchester
.30-30 Winchester 1 .30-30 Winchester .30-30 Winchester .30-30 cartridge (center) between 5.56×45mm NATO (.223 Remington), left, and 7.62×51mm NATO (.308 Winchester), right Type Rifle Place of origin United States Production history Designer Winchester Designed 1895 Manufacturer Winchester Produced 1895-Present Variants .25-35 Winchester, .219 Zipper, .30-30 Ackley Improved, 7-30 Waters Specifications Case type Rimmed, bottlenecked Bullet diameter .308 in (7.8 mm) Neck diameter .330 in (8.4 mm) Shoulder diameter .401 in (10.2 mm) Base diameter .422 in (10.7 mm) Rim diameter .506 in (12.9 mm) Rim thickness .063 in (1.6 mm) Case length 2.039 in (51.8 mm) Primer type large rifle Ballistic performance Bullet weight/type Velocity Energy 110 gr (7 g) FP 2,684 ft/s (818 m/s) 1,760 ft·lbf (2,390 J) 130 gr (8 g) FP 2,496 ft/s (761 m/s) 1,799 ft·lbf (2,439 J) 150 gr (10 g) FN 2,390 ft/s (730 m/s) 1,903 ft·lbf (2,580 J) 160 gr (10 g) cast LFN 1,616 ft/s (493 m/s) 928 ft·lbf (1,258 J) 170 gr (11 g) FP 2,227 ft/s (679 m/s) 1,873 ft·lbf (2,539 J) [1] Source(s): Hodgdon .30-30 Winchester 2 The .30-30 Winchester/.30 Winchester Center Fire/7.62×51mmR cartridge was first marketed in early 1895 for the Winchester Model 1894 lever-action rifle.[2] The .30-30 (thirty-thirty), as it is most commonly known, was the USA's first small-bore, sporting rifle cartridge designed for smokeless powder.
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338 Marlin Express
Notes from the Lab: .338 Marlin Express The .338 Marlin Express was developed by Hornady Manufacturing and Marlin Firearms, and is based on the .376 Steyr case (which Hornady also developed). The case had to be shortened, the shoulder angle changed and necked to accept .338-inch bullets, and finally a semi-rim added. Next a new boat-tail spitzer bullet was developed that featured a special rubberized “FTX” tip to prevent primer set-off when used in the tubular magazine of the Marlin MXLR lever-action rifle. The end result is a modern cartridge capable of pushing a 200-grain bullet to an advertised 2,565 fps and is suitable for hunting moose, elk and bears, as well as African plains game. With a 200-yard zero, it drops 9.7 inches at 300 yards, making it useful in open country. Select loads produced sub MOA, 3-shot groups. In referencing Hornady factory ammunition, a five-shot string averaged 2,524 fps from a Marlin Model MXLR with a 24-inch barrel. Bullets should be seated to an overall cartridge length of 2.585 inch (to assure proper cycling through the action), then roll crimped in place to prevent bullet movement when subjected to recoil and magazine tube spring pressure. Loads containing ball (or spherical) powders should never be reduced below “start” loads, or hang-fires, erratic ignition and pressures can occur. Outstanding performance (accuracy and velocity) was obtained with Accurate AAC-2520, Hodgdon LEVERevolution and Ramshot Big Game powders. Only standard (non-magnum) large rifle primers should be used, with Winchester primers chosen to develop the accompanying data.
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Handloading the .375 Ruger Is Rounds Over a Chronograph, the .375 300 Nosler Partition H-4350 77.0 2,489 Lug to Help Prevent Splitting
Load Development Handloads for the .375 Ruger Brian Pearce turm, Ruger & Co. has once again teamed with Hornady SMfg. to offer a cartridge bear- ing its name, the .375 Ruger. The concept is sound – a beltless case that fits in a standard .30-06 length bolt action but offers performance that slightly exceeds the around-the- world proven .375 H&H Magnum. Industry specifications list a Through this development, Ruger maximum cartridge length of has improved the Model 77 rifle. 3.340 inches for the .375 Ruger, (More on that in a moment.) but Hornady factory ammunition measures 3.2470 inches. The .375 H&H Magnum was first offered around 1912 and has become a standard among hunters Model 77 Hawkeye rifle, I believe taking large and dangerous game. It this combination is a real winner. may be considered the .30-06 of Af- I generally avoid comparisons, but rica, where it regularly accounts for the .375 Ruger will duplicate .375 lion, buffalo, hippo, elephant and H&H Magnum performance, us- ing less powder (and in a rifle with shorter bolt travel making it less likely to end up in the shooter’s Brian was impressed with the face when cycling the bolt hard accuracy of the Ruger Model 77 and the consistency of the .375 with the rifle on the shoulder). The Ruger. Accurate handloads folks at Hornady claim the .375 were easy to develop. Ruger has a case capacity 6 percent greater than the H&H Magnum, other dangerous game. Likewise it touted as a “proprietary case,” it has been popular in Alaska for many shares similar dimensions to the decades, where brown bears and old Newton case.
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