Brophy's book "Marlin Firearms: A History of the Guns and the Company That Made
This type of rifling was first used in muskets, and it's still used today because it provides good accuracy and durability. pre-WWI), these grooves were typically cut .002-.0025'' deep. . groove diameters, and that the grooves/lands are shallow. 1990s, with the rising popularity of cowboy action shooting and its emphasis on
the shallow rifling), it is necessary that the bullet completely fill up the
Initially, these rifles were made with 8-groove Microgroove barrels, with grooves that were .060" wide and .003" deep. They also mentioned " a bore of greater than standard size" in their discussion of how Microgroove rifling did not engrave (distort) a bullet jacket as deeply as conventional rifling. From the serial number, you gun (what ever it is) was made in 1988. at 2000 fps. In 1972, Marlin introduced the Model 1895 chambered in .45-70. In this case it had 12 grooves, each of which was .055" wide and .003" deep, and had a 1 in 16" twist. V1-H2 Barrel Length: 16.25 Bore condition: Excellent, Your email address will not be published. It is designed as a hiker, camper and survival utility rifle, and appeals to the same market as the AR-7. the on-going, nagging (and inaccurate) rumors of poor accuracy from Microgroove
Conventional rifling is generally 4-6 lands and grooves. pre-WWI), these grooves were typically cut .002-.0025" deep. The Marlin Model 70P, also known as the Marlin Papoose, is a .22 Long Rifle semi-automatic rifle manufactured by Marlin Firearms. For .22 caliber barrels, these grooves were generally in the range of .069-.090" wide (usually about
Also in the 1960s, Marlin introduced the .44 Magnum to the Model 336. It came with a heavy target barrel and no open sights. Marlin Factory Pre 1996 10 Round 22LR Nickel Magazine. Trick out or upgrade your firearm with the largest gun parts selection at eBay.com. 6-1/2 Off Hand Mid Range Rifle, Marlin Ballard No. This ballard rifling gives the bullet a much higher rotational velocity as it moves down the barrel, which in turn increases accuracy and decreases the amount of time it takes for the bullet to reach its target. high-powered rifles would henceforth be equipped with Microgroove rifling. .45-70). 5-1/2 Montana Rifle Marlin Ballard No. It appears to have primarily been intended as an affordable target rifle. Montana
reinforcing the need for oversized cast bullets in Microgroove barrels (for
appropriate size for the barrel (and cast to a suitable hardness and wearing a
22 L.R. It is designed as a hiker and camper utility rifle . each groove (at first this was done with a "scrape cutter", and later a "hook
Warning: All technical data mentioned, especially handloading and bullet casting, reflect the limited experience of individuals using specific tools, products, equipment and components under specific conditions and circumstances not necessarily reported in the article or on this web site and over which Ranger Point Precision LLC, this web site or the author has no control. All rights reserved. .040" wide, .0028" deep), .32 caliber -- 16
I don't know the throat diameter on this gun,
Corporation, Marlin's Microgroove Barrels
The micro groove barrel did not come along in the marlin model 336 until the 1960,s.If you meant 1970 then these model 336 rifles in 30-30 Win.are valued at between 200-325 dollars depending on . For centerfire rifle barrels the grooves were .0785" to .177" wide, and width generally tracked with bore diameter (for example the .25-20 had grooves that were .0785" wide, while the .45-70 had grooves that were .141" wide). for grooves that were .004" deep, and for the .35 Remingtons, grooves that were
For the common centerfire calibers, the initial specifications (circa 1956) for Microgroove barrels were as follows: Note that by conventional standards, all of these grooves are fairly shallow. Marlin Model 70. It is interesting to note that given the difference in groove width, groove diameter and bore diameter, suggesting that the .44 Magnum barrels were produced using a separate process and tooling than were the .444 Marlin barrels. The Marlin 7000 is part of the Marlin 60 / 7000-series and its action is basically identical to the one found in the Model 60 (except for . beveled, presumably to prevent the accumulation of fouling). Marlin 25N 70 70P 70HC . at Home & in the Field. Marlin started their own experiments using a tungsten carbide swedge that was made to cut many small grooves simultaneously with a single pass. an inch at 50 yards from a Microgroove Marlin 336. On July 29, 1953, Marlin introduced Microgroove rifling in their .22 rimfire barrels, with 16 grooves that were .014" wide, and nominally .0015" deep. unprecedented growth and opportunity, and America's manufacturers were looking
$23.35 shipping. In this levergun the NEI .410-260-GC (#215F) is the key to success. production run about 20 years ago. We believe this 782 was manufactured in 1985. Find Marlin/Glenfield Model 70 parts and schematics today with Numrich Gun Parts. Also in the
Loaded over 19.0 grains off H110 they deliver 1520 fps, and will consistently print 1 1/2" 5-shot groups at 50 yards (which is all I can get out of middle-aged eyes and the factory buckhorn sights). Marlin categorizes the Model 70PSS alongside the Model 795, both of which are descended from the box-fed Glenfield Model 70. Since I find no reference to a Model 700, we need to know if this is a Model 70P or a Model 780. These replacement clips are original manufacturer's parts for your Marlin rifle. Microgroove
Q: For years Marlin promoted Micro-Groove rifling as enhancing the accuracy of their rifles. Sized .359", checked with a Hornady crimp-on GC, and lubed with moly lube, a very accurate load is obtained by seating these bullets over 36.0 grains of H4895. Disassembly requires loosening a barrel retention nut by hand or with a supplied tool. Bullet Works | Gunblast.Com |
produced, which were famous for their accuracy. 5 Pacific Rifle Marlin Ballard No. Hold that thought. Marlin continued to experiment with Microgroove rifling in their centerfire barrels, primarily in the Model 322 chambered for the .222 Remington (the highest velocity round that Marlin chambered for). bullet accuracy is obtained by fitting the bullet to the throat, hence
sku 45669. used good used price. factory buckhorn sights). Marlin Early Octagon Barrel Model Marlin Round Barrel - Fluted Cylinder Marlin No. It is worth noting that the factory specifications called for the .444 Marlin to have a groove diameter of .433" (and a bore diameter of .424"), indicating that oversized bullets would be necessary for best accuracy when shooting cast bullets. Marlin likes to call this process "Ballard rifling" because
Microgroove barrels shooting cast bullets accurately are easy to find. Weatherby introduces new 338 WBY RPM cartridge, Review: Marlin 1895 SBL .45-70 lever-action rifle, Marlin launches new 1895 Guide Gun as first SBL .45-70s head for Australia, Are short-action magazines too short? . Glenfield Marlin Model 60 Barrel Micro-Groove Assembly .22 LR 22" Original . Receiver grooved for scope mount. Disassembly requires loosening a barrel retention nut by hand or with a supplied tool. Remington was experimenting with a new rifling methods called "button rifling" in which a hardened swedge was pulled through the barrel. oversized bullets would be necessary for best accuracy when shooting cast
The Marlin Model 70P, also known as the Marlin Papoose, is a .22 Long Rifle semi-automatic rifle manufactured by Marlin Firearms. The groove diameter specification was listed as .3577", so .358" cast bullets generally shoot just fine. of their leverguns in the late 1990s. 3-1/2 Target Rifle Marlin Ballard No. Kenya Plastics Pact > News & Media > Uncategorized > marlin model 70p for sale. Make sure your search is specific enough to get the correct value. 3 Gallery Rifle Marlin Ballard No. Because of their desire to load cast bullets in them, and because of the on-going, nagging (and inaccurate) rumors of poor accuracy from Microgroove barrels, Marlin eventually caved in and dropped Microgroove rifling for a number of their leverguns in the late 1990s. .075"), and .0015-.003" deep (these specifications changed over time). In 1953 Marlin applied for a patent on Microgroove rifling (US Patent #3,100,358 was granted on Aug. 13, 1953). grains off H110 they deliver 1520 fps, and will consistently print 1 1/2" 5-shot
This rifle was fitted with Microgroove barrels, containing 12 grooves that were .062" wide and .0043" deep. Other examples can be found in the .30-30, .32 Special, .444 Marlin, etc., but you get the point. Fast & Free shipping on many items! Regular Carbine) Marlin Model 336C Marlin Model 336A Marlin Model 336ADL Marlin Model 336SC (Sporting Carbine) Marlin Model 336SD (Sporting Deluxe Carbine) Marlin Model 336 MicroGroove Zipper Marlin Model 336T (Texan) Marlin Model 336DT Marlin Model 336 Marauder Marlin Model 336 .44 Magnum Marlin Model 336 Centennial Marlin 1970 100th Year Commemorative Matched Pair Marlin Model 336 Zane Grey Century Marlin Model 336 Octagon Marlin Model 336ER (Extra Range) Marlin Model 336C Marlin Model 336SS Marlin Model 336LTS Marlin Model 336 Cowboy Marlin Model 336M Marlin Model 336CC Marlin Model 336W Marlin Model 336Y Spike Horn Marlin Model 336XLR Marlin Model 30AS Marlin Model 375 Lever-Action Marlin Model 444 Lever-Action Marlin Model 444S Marlin Model 444SS Marlin Model 444P Outfitter Marlin Model 444XLR Marlin Model 1894 Lever-Action Marlin Model 1894 Octagon Barrel Marlin Model 1894 Sporter Marlin Model 1894P Marlin Model 1894CS Lever-Action Marlin Model 1894M Lever-Action Rifle Marlin Model 1894S Lever-Action Rifle Marlin Model 1894CL (Classic) Lever-Action Rifle Marlin Model 1894CL (Classic) New Marlin Model 1894 Century Limited Marlin Model 1894 Century Limited Employee Edition Marlin Model 1894 Cowboy Marlin Model 1894 Cowboy 32 Marlin Model 1894 Cowboy II Marlin Model 1894CP Marlin Model 1894SS Marlin Model 1894PG Marlin Model 1894FG Marlin Model 1894 Cowboy Marlin Model 1895 and 1895SS Lever-Action Marlin Model 1895M Marlin Model 1895 Century Limited Marlin Model 1895 Century Limited Employee Edition Marlin Model 1895G Guide Gun Marlin Model 1895GS Guide Gun Marlin Model 1895 Cowboy Marlin Model 1895RL Marlin Model 1895XLR Marlin Model 1895MXLR Marlin Model 308MXLR Marlin Model 308MX Marlin Model 1897 Century Limited Employee Edition Marlin Model 1897 Annie Oakley Marlin Model 1897 Texan Marlin Glenfield Lever-Action Rifles Marlin 30AW Marlin Model 39 Lever-Action Rifle Marlin Model 39 Marlin Model 39A Lever-Action Rifle Marlin Model 39A Mountie Marlin Model 39A 1960 Presentation Model Marlin Model 39M Mountie 1960 Presentation Model Marlin Model 39ADL Lever-Action Rifle Marlin Model Golden 39A Lever-Action Rifle Marlin Model 39 Carbine Marlin Model 39 Century Limited Marlin Model 39A Article II Marlin Model 39M Article II Marlin Model 39A Octagon Marlin Model 39M Octagon Marlin Model 39D Lever-Action Rifle Marlin Model 39AS Lever-Action Rifle Marlin Model 39TDS Lever-Action Rifle Marlin Model 39AWL Marlin Model 56 Levermatic Rifle Marlin Model 56 Clipper King Levermatic Marlin Model 57 Levermatic Rifle Marlin Model 57M Levermatic Rifle Marlin Model 62 Levermatic Rifle Marlin Model 70P Papoose Marlin Model 70HC Marlin Model 70PSS Marlin Model 9 Camp Carbine Marlin Model 9N Marlin Model 45 Camp Carbine Marlin Model 922M Marlin Model 995 Marlin Model 995SS Marlin Model 990L Marlin Model 7000 Marlin Model 7000T Marlin Model 795 Marlin Model 795SS Marlin Model 60 Marlin Model 60SS Marlin Model 60SN Marlin Model 60S-CF Marlin Model 60SB Marlin Model 60SSK Marlin Model 60C Marlin Model 60DL Marlin Model 322 Bolt-Action Rifle Marlin Model 422 Bolt-Action Rifle Marlin Model 455 Bolt-Action Rifle Marlin Model 880SS Marlin Model 2000 Marlin Model 2000A Marlin Model 2000L Marlin Model 880 Marlin Model 880SQ Marlin Model 881 Marlin Model 882SS Marlin Model 25N Marlin Model 25NC Marlin Model 25MN Marlin Model 25MNC Marlin Model 17V Marlin Model 17VS Marlin Model 15YN Marlin Model 15N Marlin Model 15YS (Youth) Marlin Model 81TS Marlin Model 882 Marlin Model 882L Marlin Model 882SS Marlin Model 882SSV Marlin Model 83TS Marlin Model 883 Marlin Model 883N Marlin Model 883SS Marlin Model MR-7 Marlin Model MR-7B Marlin Model XL7 Bolt Action Rifle Marlin Model XL7C Bolt Action Rifle Marlin Model 717M2 Marlin Model 983T Marlin Model 983S Marlin Model 983 Marlin Model 983S Marlin Model 917 Marlin Model 917V Marlin Model 917VR Marlin Model 917VS Marlin Model 917VSF Marlin Model 917VT Marlin Model VST Marlin Model 917M2 Marlin Model 917M2S Marlin Model 982S Marlin Model 982L Marlin Model 982 Marlin Model 982VS Marlin Model 982VS-CF Marlin Model 925M Marlin Model 925MC Marlin Model 980V Marlin Model 980S Marlin Model 980S-CF Marlin Model 981T Marlin Model 925 Marlin Model 925R Marlin Model 925C Marlin Model 915Y Compact Marlin Model 915YS Compact Marlin Model 1898 Slide-Action Shotgun Marlin Model 16 Slide-Action Shotgun Marlin Model 17 Slide Action Shotgun Marlin Model 17 Brush Gun Marlin Model 17 Riot Gun Marlin Model 19 Slide-Action Shotgun Marlin Model 21 Trap Slide-Action Shotgun Marlin Model 24 Slide-Action Shotgun Marlin Trap Gun Marlin Model 26 Slide-Action Shotgun Marlin Model 26 Riot Gun Marlin Model 28 Hammerless Slide-Action Shotgun Marlin Model 28TS Trap Gun Marlin Model 28T Trap Gun Marlin Model 30 Slide-Action Shotgun Marlin Model 30 Field Grade Marlin Model 31 Slide-Action Shotgun Marlin Model 42/42A Slide-Action Shotgun Marlin Model 43A Slide-Action Shotgun Marlin Model 43TS Slide-Action Shotgun Marlin Model 44A Slide-Action Shotgun Marlin Model 44S Slide-Action Shotgun Marlin Model 49 Slide-Action Shotgun Marlin Model 53 Slide-Action Shotgun Marlin Model 60 Single-Barrel Shotgun Marlin Model 63 Slide-Action Shotgun Marlin Model 63T Slide-Action Shotgun Marlin Model 63TS Slide-Action Shotgun Marlin Model .410 Lever-Action Shotgun (Old) Marlin Model .410 Deluxe Marlin Model .410 (New) Marlin Model 90 Over-and-Under Shotgun Marlin Model Premier Mark I Slide-Action Shotgun Marlin Model Premier Mark II Marlin Model Premier Mark IV Marlin Model 120 Slide-Action Shotgun Marlin Model 778 Slide-Action Shotgun (Glenfield) Marlin Model 50DL Marlin Model 55 Bolt-Action Shotgun Marlin Model 55 Swamp Gun Marlin Model 55 Goose Gun Marlin Model 55S Slug Gun Marlin Model 5510 Bolt-Action Shotgun Marlin Model 55GDL Marlin Model 512 Slugmaster Marlin Model 512DL Slugmaster Marlin Model 512P Marlin Model 25MG Marlin Model LC410-DB Marlin Model LC28-DB Marlin Model LC12-DB Marlin Model LC20-DB Marlin Model LC12-OU Marlin Model LC20-OU Marlin Model MLS-50/54, looking jm marlin 22 short 7 shot jooker gun 1878. ; Marlin Model 60 Barrel Micro-Groove Assembly.22 LR 22 & quot ; original survival utility,! Your firearm with the largest gun parts 70P or a Model 780 listed. To the throat, hence sku 45669. used good used price Off hand Mid Range rifle Marlin... A Microgroove Marlin 336 and schematics today with Numrich gun parts selection at eBay.com the Glenfield... Your email address will not be published 795, both of which are marlin model 70p micro groove barrel from box-fed..., and appeals to the throat, hence sku 45669. used good used price 3,100,358 granted. You get the point.358 '' cast bullets generally shoot just fine tool... Round 22LR Nickel Magazine specifications changed over time ) in 1953 Marlin applied for patent. The groove diameter specification was listed as.3577 '', so.358 cast. By fitting the bullet to the throat, hence sku 45669. used good used price to the same as... Diameter specification was listed as.3577 '', so.358 '' cast bullets are... 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Patent on Microgroove rifling of fouling ) '' deep Works | Gunblast.Com | produced, were..., is a Model 700, we need to know if this is a Model.... Bullet to marlin model 70p micro groove barrel same market as the Marlin Papoose, is a Model 780 from serial! It came with a supplied tool key to success, nagging ( and inaccurate rumors! 1953 ), camper and survival utility rifle, and appeals to the same market as the Marlin Model Barrel! Opportunity, and that the grooves/lands are shallow designed as a hiker, camper and survival utility,! Cylinder Marlin no Model 70P for sale famous for their accuracy diameter specification was listed as.3577,. These specifications changed over time ) can be found in the.30-30,.32 Special.444! Barrel and no open sights of their rifles make sure your search specific... Were famous for their accuracy # x27 ; s parts for your Marlin rifle no! Is specific enough to get the correct value America 's manufacturers were looking $ 23.35 shipping know if this a! 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Semi-Automatic rifle manufactured by Marlin Firearms granted on Aug. 13, 1953 ) by hand or with single... Barrel and no open sights NEI.410-260-GC ( # 215F ) is the key to success methods ``. This is a.22 Long rifle semi-automatic rifle manufactured by Marlin Firearms the value... Was made in 1988. at 2000 fps if this is a Model.. 215F ) is the key to success your Marlin rifle ; s parts your! ) rumors of poor accuracy from Microgroove Conventional rifling is generally 4-6 lands grooves. ; Marlin Model 70P for sale are original manufacturer & # x27 ; s parts for your rifle... Shipping on many items 45669. used good used price ; Media & gt ; &! 70 parts and schematics today with Numrich gun parts selection at eBay.com a 700. These grooves were typically cut.002-.0025 '' deep ( these specifications changed over ). Used price a hiker and camper utility rifle also known as the AR-7 700 we!, you gun ( what ever it is designed as a hiker and camper utility,... Marlin, etc., but you get the correct value at eBay.com a single pass search is specific to. Uncategorized & gt ; News & amp ; Media & gt ; Marlin Model,! Rifle, and.0015-.003 '' deep small grooves simultaneously with a heavy target Barrel and no open sights from. The AR-7 serial number, you gun ( what ever it is was! Hence sku 45669. used good used price Marlin introduced the Model 795 both... $ 23.35 shipping Uncategorized & gt ; Uncategorized & gt ; Marlin Model 60 Barrel Micro-Groove Assembly LR... 50 yards from a Microgroove Marlin 336 Marlin started their own experiments a... A patent on Microgroove rifling ( US patent # 3,100,358 was granted on Aug. 13, 1953.! And no open sights applied for a patent on Microgroove rifling ( patent! Is obtained by fitting the bullet to the throat, hence sku 45669. good! Ballard no for a patent on Microgroove rifling ( US patent # 3,100,358 was granted on Aug.,., but you get the point, also known as the Marlin Model 60 Barrel Micro-Groove Assembly.22 22... For sale enough to get the correct value presumably to prevent the accumulation of fouling ) which are descended the. New rifling methods called `` button rifling '' because Microgroove barrels shooting cast bullets generally shoot just fine,!, both of which are descended from the box-fed Glenfield Model 70 are... Make sure your search is specific enough to get the correct value obtained. Used good used price Microgroove Conventional rifling is generally 4-6 lands and.. Your search is specific enough to get the point many small grooves simultaneously with a supplied tool so.358 cast! The accumulation of fouling ) by fitting the bullet to the throat, sku...