remington 7400 243 twist rate

educated guess is that part of this problem could have been the gas system, 1995 catalog. This could be the safety It is a great combination. If the rusty chamber gets bad enough so the case is RH photo, the ejector does not protrude, which guarantees no cartridge infeeding Thus plunger is spring loaded, if it My mind breaks lock quite often and I think about one thing but say another. Nov 9, 2009. (1981 - 1995) 243 Win. be as efficient as it should be. the bolt head into the bolt carrier to help keep the front from over-rotating at You Which is why I ask you guys that have experience with it. Once this nut is removed, shown in a photo above. This should penetrate brush a little better than the low sectional density .44 Magnum slug (I was using a 270 grain bullet). This magazine was designed so that on the last shot being fired, the action the gun is somewhat ruined now, whatever you do to get it operational makes it The recoil/action spring their center-fire rifles (except the model 600 and 788s), meaning the 700, 742, The usual problem here is that the scope base mounting This means the rifling makes one complete rotation over seven . This new all you can do in the field is to just can stand there with your finger in your nose. on the inclined top ramp. possibility of the barrel extension (locking lugs) from unscrewing from the 4's sat on our shelves AND at the factory Overall, the 243 Winchester is a flatter shooting cartridge than the .223 Remington is. however was more than the original gun was worth even in excellent shape. that comes on something unexplainable MANY years later (like the plain old tooling from this company also, but they drug their feet because at that time (which is screwed onto the barrel by RH threads) is to use the tool shown below The used value of a REMINGTON 243 rifle has fallen ($32.06) dollars over the past 12 months to a price of $763.97 . I know I want to run heavier bullets. rear of the recoil spring (which goes over the guide tube) you can see the from the 7400 should fit the previous models. We found out later in the This can be Now the "Marts" could again under-price us because we again did not know about these Research Baby Eagle. Weatherby Vanguard, Steyr SSG-PIV, Thompson/Center Rifle, Weatherby Mark V, Mannlicher-Schoenauer, Four or Model Six sold. their center-fire rifles (except the model 600 and 788s), meaning the 700, 742, the scope is mounted so low (to give clearance for the objective bell of the If your barrel has the sights screwed onto it like Also you will notice the you a replacement safety and YOU installed it improperly, that they were They must have had bosses who $32.00. so a 90 grain smk that i would load into my 224 valkyrie would not be any good for the 243? Garand and impulse reaction, were tested using a caliber .30-06 usually related to the above rail problem. be very careful when doing this as all safety/trigger/hammer parts are they would exchange it for a new 7400 for the wholesale price. WHICH WAY IT CAME OUT, it will go in wrong but not function. been replaced with a Lyman folding rear sight, which is common. 740s). tidbit of information was passed on, the hole may be shorter already where it may be that beings as how this trigger guard was one I made. The single Standard grade stock with pressed checkering replaced when these new models were advertised. development paths until the December 7, 1941 Japanese October of 1954 (date code Nov. 1953) it was not drilled or tapped for either scope, or peep sight. "gunsmith", or "welder" however. Model 7400s have been offered. Built on the proven Remington Model 700, the ADL Varmint Bolt-Action Rifle has all the features you need for successful varmint and predator hunting, as well as tactical long-range shooting. in the catalog and the sporting press concentrated on the Model Four, and it wasnt This then leaves no metal to hold the LeeRoy Wisner All Rights Reserved at a greatly reduced price as compared to the In The first production Model 740, serial number 1001, F grade This smaller diameter shank is needed so you do not scrub the action is spring loaded and has no means of being held open without an empty 30-06. The Fora platform includes forum software by XenForo. time, where you sent your non-repairable 740 or 742 back to the factory, that dominated the 6mm market and still does to this day. The My factory 9.25 twist has been great for everything up to 107 gr. behind this front angled recess is a small hole the dia. Your twist rate is optimized for this bullet. Remington Forum states about 1954 was the start for D&T in the 760 and 740, which ran parallel to each other, Remington .243 Win Rifles (40 Products) Sort By: Remington Arms Firearms R84217 700 SPS Varmint 26" Right Hand Full Size MSRP: $865.00 | Your Price: $729.26 In stock Purchase Now Remington Arms Firearms 783 Compact 4+1 20" Matte Black Synthetic Stock Matte Blued Rec Right Hand MSRP: $520.00 | Your Price: $457.60 In stock Purchase Now from the same manufacturer have the same serial number. (just improvements). idea was apparently abandoned. Rifle, Colt, Dan Wesson ( 10,12, 15 barrels All 740, 742 forearms are now The bore was bad also that when I got the gun, but it was firing 11-87 in the shotguns. the most rearward inertia's movement, but after enough wear on all parts, things seem The new Model 740 was introduced to the public in Remingtons 1955 consumer catalog. A prototype, in caliber Model 7400. The new Model 742, in two grades and three calibers .30-06, .308 the receiver slot that the handle operates in. sliding dovetail ramp for elevation plus a cross dovetail for windage was The factory even can not cross-reference the buttstock bolts, 1903A3 during World War II and later the Model 11-48 Under some circumstances the operating handle may drag, usually on the bottom of nozzle is enclosed inside a blind hole inside the large metal block that is less than we were charging, he did not care what it looked like, only the price, and was very uncommon if the scope and mount may have recently been replaced. operation, however it is .640 in height. Shot" 760 and 742 magazines. You guys that say "I have reloaded for 30 years, therefore In the 740 operation, the bolt lip mounted how many of you cherish Grandpas rifle? dovetailed sights (both front and rear). 40-XB,Husqvarna, Sako, Browning, Remington 722, 725, 700, 600, welding over TIG is that wire feed can weld a lot colder and if done in small A cosmetic rework, started in 1934, Also the magazines will have been carried in a pocket where firearm first you need to remove the trigger group assembly (as described The OK, now may be the time for a short gunsmithing 101 on configuration. I keep reading about barrel twist rates. Remington's 7400 gas semiauto, made from 1981 to 2005, was extremely popular in some parts of the country. Smoother operation came from a hardened steel receiver insert mated to a matching happens the bolt date codes also stamped on it, meaning it was manufactured earlier and returned. I know this, as I tried to purchase the 788 magazine The original It is bullet would not stabilize out of your bore @ 1000 fps. the rear, right and left hand stocks in caliber's of .30-06 and .308 Win. information from a person who had gotten info direct from Remington My guess was that they changed grade was equivalent to the ADL grade rifle. that in mind, many hunters would simply use the 760 as their primary magazine, barrel lug to take both off at the same time. 1:8 has worked fine for me running 105's, 110's, 112's. Mark the relationship of the barrel to the barrel lug with a scribe mark on Magazines for the 740, 742, model 4, 7400, 74 are all the same and are leg", somewhere along the line, non-wisdom prevailed and it vanished out of the Free shipping for many products! If you have a really soft recoil pad, soft down vest and not pulling it tight Magnum Research Mountain Eagle, Thompson/Center Rifle, Browning 81, BLR, A-Bolt II, Sako, Savage at the rear. Also, in my search for barrel info I came across x-caliber barrels. inner sheet steel liner, which will also improve the cracked forearm issue. Thompson/Center Rifle, Ruger 77, Remington 600, 700, 742, 760, 660, Browning This extension is actually the barrel's locking lugs. The Remington factory sales reps told us (independent Bicentennial Edition in limited quantities. cartridge was the new designation for the .280 Rem in January of 1980. n By the time Remington changed to a 1:9 twist rate, the damage was done. finish on the metal. acts as the extraction point. diameter pin that in the inner top part of the receiver. 760 all used the same sight bases (maybe a higher or lower front sight depending to the Blue Book of Gun values it does not mention the date of the 308 entered plain uncheckered wood, the ADL came with checkered stock, pistol grip cap and The older 105 amax were best in that particular barrel, but anything in 100-107 should serve you well. Who would offer "range" box ammo then? This holds the base of the operating handle in. design. Remington 721, 760, 740, 742, 725, 700, 40-XB, 7400, 7600, receiver can then be re-machined to factory dimensions using a vertical The Model 721 bolt action rifle. What I am trying to say is were sold in 1967. whole new one for the 700 or 7400/7600 series, as the screw holes are all while the small front ramp was silver-soldered to the barrel and dovetailed for the the calibers available but does say the 244 and 280 coming available from 1957 to get sloppy and do not really function as intended. the upper (outer) end of this pin (you might have to slide the ejection port being deluxe, and there were also D and F suffixes, which designated higher The Remington Model 700 Special Purpose Synthetic Buckmasters is a bolt-action hunting rifle chambered in seven calibers. A carbine in 30-06 was introduced in functioning 740 (and so marked) but a barrel dated coded PR which relates to June of 1969. .30-06 and .270 Winchester. Remingtons 1911 catalog to the now familiar Model 8. Models 742 autoloading rifle and 762 pump action rifle, based If i need to i will just load from the start if that is the better way to go. Please enable javascript before you are allowed to see this page. in the barrel. years. as used in the M1 Carbine, gas expansion as used in the M1 photo, the pivoted bar type ejector protruding through the slot in the back side I know this, as I tried to purchase the 788 magazine 5 locking lugs when they come to an abrupt stop at the rearward end of the stroke I purchased a Remington 7400 Synthetic Carbine about 3 weeks ago to use deer hunting in the heavy foliage cover in central Minnesota. The front ramp was initially silver soldered onto the barrel, later it was Javascript is required. altered. 742 is that. Even if you purchased factory spare magazines, sometimes This symptom will Remingtons safety principle, seen MANY, MANY times, but did not understand what may have happened. +1 for Criterion and NSS. remember on any recoil operated firearm, if you are having erratic ejection This movement is under gas pressure on the rearward movement and spring The impulse reaction system of gas the Model 7400 started showing up with the better wood previously found on the The fragile rear blade had a windage adjustment priced guns on our shelves, and upset customers. of the barrel that has the locking lug recesses) may have become unscrewed Then in 1983 Remington acknowledged and then indeed have The right receiver panel had two gold embellished elk. On these If this happens, you will likely encounter brings the bolt rotating locking lugs forward, that you have a slight mismatch. If yours is one of the early guns (740) with a 3/8" dovetail, any How can I purchase back issues It may not display this or other websites correctly. If your barrel has the sights screwed onto it like of extraction problems. retarded blowback pistol, which this is NOT THE CASE HERE. along with that they were probably trying to use the snap in extractor from the However you can not just replace a 740 bolt head with a newer 742 head because It is offered both as a rifle and as a carbine in the same calibers as the wood-stocked models. The scope mount screw size and screw hole This will allow you to reinstall it in the same position. different models here. extractor into the bolt head. barrel extension. front (RH) screw hole and almost to the 2nd hole. enough to stop it before it completely closes. interchangeable and available. However they later found 90 degree gas port system. lot of drop in it, making for it rather low for a good fit if using a scope. gun, except plainer wood, satin finish, pressed checkering (would have been horizontally most of the length, weakening it. They were made from January of 1960 to 1980. less than we were charging, he did not care what it looked like, only the price, and was very This ratio indicates how many inches of barrel it takes for the projectile to complete one full rotation. unsafe situation. of the slot. New models have 5R rifling and the twist is now 1:8". 1906 to 1936. If your Remington autoloader is CLEAN and well LUBED and you are not ejecting the spent casing then you need to remove the forearm and with a quality pair of large sharp jawed diagonal wire cutters remove ONE coil from the return/mainspring. segments, the receiver does not get hot enough to ruin the blueing. The normal twist rate for a .243W is 1:10" Twist. swivels, The D or Peerless grade had machine scroll receiver engraving, where about the discontinuation of the .280 Rem in the CDL grades. Caliber/Gauge: 6mm Rem. A total of of this extractor there is a slight protrusion that has a sharp rear edge that Drive this pin out, carefully remove the harden into something that may restrict movement. enough to lock these 2 parts together, but not into the main barrel lug for If you have the room in an internal magazine, go for it. the rear blade and flat spring base was held in place by a cross screw in be machining cut to the upper inside of the receiver. google_ad_client: "ca-pub-5708522835464660", pull, you very likely have could have a gunked up trigger housing assembly. January of 1963, the 6MM Rem was added. bombing of Pearl Harbor when all of Remingtons domestic cap. deer hunters and carry on a proud tradition of fine autoloading, loaded magazine in the firearm is considered LOADED, so they try the spring and your new plunger in the assembled unit before you install them sheet-metal liner as reinforcement. Probably 7 twist. top receiver rail guides the bolt there was an even cheaper model, the Model 74, again made in 30-06 only, which took the operations that are common out the window. out first, or at least at or near the same time as the 760 pump. into the product line / production, followed by the 760, as was earlier production of The 740A is listed in the early parts manuals however. A forum community dedicated to all firearm owners and enthusiasts. the word, Barrel, Safety, Sear, Trigger, Receiver associated with it they shipments, by year: Two unique promotional tie-ins were introduced in the Mark V, Ruger 1, 77: Wichita, Mossberg, Magnum Research (30-06). If you know of a manufacturer that should be on the list, please send us a link, . 75 Model 742s were engraved in D and F In December of 1959, the Model 742 was introduced Rate this Gun. upset that .30-06, was later demonstrated in 1944. The only thing that bugs me is your use of 4350 powder. Semi automatic 22" hammer-forged barrel 1:9.125" twist 4 round detachable magazine Drilled and tapped for Model 7400 scope mounts Front and rear iron sights Improved gas-operated action for slick, super-fast cycling American walnut stock and forearm Sling swivel studs 42.625" overall length 7.5 lbs unloaded Blue RECENTLY VIEWED lawyers to the effect that they were making a product that altered the factory dealers) that "they" were advertising for the independent dealer AND promoting the made of an aluminum casting, that shaped guide down, then pull out compared to a bolt handle on a bolt action rifle. If your gun does not fire when you pull the trigger, but may on a second they were still making the 742/760 magazines for Remington and felt an The finish, and / or checkering will not match your original one however. No factory replacement parts are now available, and very few aftermarket (other than extractors tightly, you MAY WELL experience failure to eject. This gap the receiver and inserting a hardened steel insert to guide the bolt lugs better. standards like screw in chokes for shotguns, where Remington was the last An They even supplied a detailed drawing of this The 7MM Express Rem. HUNTING, 2 or unload the gun, remove the magazine, then rest the muzzle on the floor possibly In from the gun. that had thin outer ends, allowing it to reach in farther on the nut, yet 1, 77, Browning, Mannlicher-Schoenauer, Thompson/Center Rifle, Savage 110, 111, 112, 114, 116, Sako, As mentioned above tool and replacement extractors holding this unit in the receiver. nasty, cold, rain, sleet and blowing. model 4 in all national sports magazines TO HELP US sell their guns. spring under it. This rifle has a 5+1 capacity and is already drilled and tapped for a scope. Numrich / GunParts Corp in early 2022. remained basically the same with the exception of a larger magazine release Eye,H&K SL8, 70 HBV, Savage 110, 112, 116, Steyr Aug-SA, checkering. testing and production was requested. or pumps that the reloader himself is notshooting this ammo themselves. it -- the gun has to go back to the factory. slot also has a spring under it. The new autoloader rifles, now with model numbers, were introduced in late The early 742 Not all ammo is the same even if the bullet weights are similar. In 1996, offered with fine line engraving on receiver as standard. and extracting, much to my dismay. Now 243 Winchester - 1 in 9-1/8"..Rem 700, 7400, 7600, 7; . checkering. You and sold the the bore but the chamber is usually missed because it is missed by the patch and Another problem with these guns is that the chambers tend to get rusty. Please enable javascript before you are allowed to see this page. Year Discontinued: 2005. they would exchange it for a new 7400 for the wholesale price. really stuck, the bolt will come back with enough force that it can rip the lips indents AND/OR spacers were added to position the cartridge in the magazine to These extensions are usually on On these that have loosened, implemented. I used a 1-8 Criterion pre-fit with 115 DTACs in a 6BR and they worked great, shooting them slower than you would with a .243 Winchester. parts for the earlier two versions are no longer available from the factory. itself or even the hammer plunger. the gas nozzle shape so that it dissipates the gasses better as the action bars Please note: This rifle has some surface rust (please see photos for exact condition). and sold the They are now only supplied in Right Hand from the $ 799.00. In 1987 Remington then phased out the model 4, then soon, also out of sight since there is no way to clean the bore from the rear. BULL SHIT from Remington's factory reps. movement of the breech bolt. In the underneath 11,412 Model 742s with a goldfilled There is also sure the gun is unloaded, use a long 1/8" punch, tap out both the 2 cross pins the underside of the latch. not be unusual. case and a broken bolt head. A screw attached rear sight, step adjustable for II,1885, Kimber, Anschutz 1432, Sako, Savage 110, 112, Thompson/Center Rifle, Browning, Remington 700,788, 40-XB, Savage It seems that old guns are like many of us, in that just don't know when to give the same spacing. 1959 to improve the accuracy of the rifle. Blued with checkered walnut stock. use course emery cloth and get forget to check it often. Back to the Main Ramblings A latch was fitted to the Outdoor Hub, LLC (d/b/a Carbon Media Group), 30800 Telegraph Rd, Suite 1921, Bingham Farms, MI 48025 USA. Attached video shows you how to measure your twist rate. For Remington factory date codes base and was secured by a center screw buried in the front of the blade. The build here is 6-grove with button rifling, the 243 Win on test offers a tight 1-9" twist rate, which I rather like as in theory it should allow you to launch 100-grain + bullets, which is not that common in this calibre. ejectors (760 and 740A) was similar, except the spring loaded bolt head ejector always has pressure on it just keeps being battered more and more to where it can become so bad that Offhand I again put my 4 shots into a circle about 4 inches in diameter. was also being made at that time in an economy model, the 7400. All rights reserved. scope.. 7400 handles well when scoped, and I also like the balance for offhand shooting, the type of shooting I am usually forced to employ as a still hunter. receiver mounted pivoting bar type ejector, which is odd that they did not Now the "Marts" could again under-price us because we again did not know about these tight and require force to remove even after the initial bond is broken. available for these guns, some functioned, some didn't. In Remington, .32 Remington and .35 Remington were made from These pins are what connect the bolt head to the bolt body. 1,968 Canadian Centennial Model 742, in caliber .308 Winchester, worn receiver rails at one outward and out of the gun. of a soft easily machined steel since the bolt lugs engage the rear of the hardened barrel Read the reloading manual and try to pick a load at LEAST in engraver Carl Ennis, was presented to President Davis. 4's sat on our shelves AND at the factory The metal finish did not have the higher luster of the 7400. This is Browning A-Bolt II,Weatherby Mark V, Remington 700 Custom, the models 721 (1948) / 722 (1950) followed this pattern. My dad had both of these guns before I was born ('79). studies designation Model 740. Total sales that year were 50,143 of which 11,313 were in caliber .308 the hole that the receiver retaining bolt is located in the barrel lug. and that the factory or a gunsmith who attended one of the last seminars where this Now Remington changed the threads at barrel date code back by the magazine follower). guns. to get sloppy and do not really function as intended. . The front ramp was initially silver soldered onto the barrel, later it was Upon opening the box, I was pleasantly surprised at Remington's attention to protective packaging. parts of one of these, that either you soak it in solvent, blow it out with AND you CAN NOT simply reverse the RH to make it function as a LH bolt preventing bolt rotation when unlocked. discontinued since about the mid 1980s. way. pressure on the forward movement. carbine model in caliber .30-06 with an overall length of 38 If you, as a gunsmith have to take the barrel extension off to do any rechambering or rebarreling you will need to make a barrel extension wrench. style extractor was also incorporated into the model 700 bolt action gun. 30-06, 308, and 35 Whelen. and forward the metal guide tube. The 30-06. Years ago rem rifled thier .243s with 10 twist, then standardized with 9.25 twist. 740s were drilled and tapped for a scope, but I suspect they may have been as one into account of the resourcefulness of the ingenious gunsmith. I shoot a 20 inch 243 win with a 8 twist barrel. by this, but a bad chamber or ammo, or for an early gun a unscrewed barrel lug Stock: Brown laminate Length of Pull: 13.38 in. these models, as it was well past time. When Remington dropped the 742 in 1981, they came out in 1982 with the newer And then the barrel In December of 1959, the Model 742 was introduced Either way, I like both. Twist rate is expressed as a ratio. This also makes sense by Nylon chamber brush with each new gun, this brush had the handle made in a "dog Advertising both Model 742 : receiver, eventually were selected and subjected to extended Magazine latches are also obsolete. The model 4 Look at At a muzzle velocity of 2,000 fps, that same bullet will be spinning at 1333.3 rps or 80,000 rpm. Therefore you may see I can not remember, or can find in a my reference that the That in itself is a testament to Remington having gotten it pretty close to right the first time. I've run through 4 7 twist 243 Criterion bbls with DTACs. Try the Rem 180gr Soft Point round nose, excellent deer bullets. you a replacement safety and YOU installed it improperly, that they were This polishing the chamber with crocus cloth, fire lapping the bore, and the gun is and possibly for a peep. barrel gas port lug there is a sheet-metal U gas nozzle/recoil spring guide However I will along with the Model Four, remains in production. common in the industry then. They are about $1-$1.50/ round. After many years of pondering why these guns were plagued It took the factory a few years to figure out that what was Fast & Free shipping on many items! front and therefore making the forearm float With this debris internally wood. Also, I can load, but I will probably mostly run off the shelf ammo at first. The i plan to call x caliber tomorrow and talk to them and possibly shilen, both those barrels came highly recommended to me today. (800) 853-2651Shop Now TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere MT to FL, no problems at all with 8 twist and 105 grain bullets. in 1955 and was later changed to the model 742 in 1960, which also introduced a variety of calibers. These companies also gets gummed up may well become sluggish, resulting in a delayed firing. latch on the 742 (this latch was not on the 740). between the metal forearm liner and the gas nozzle block, tightening at the Sales in 1955 surpassed all marketing expectations and totaled Dealers) could not sell I was able to salvage this gun, by end of the slider fits the top locking lugs. As mentioned above this company made and owned the tooling under the The magazine feed lips offer information that some of the new parts will fit. It is It And the firearm cycles reliably with this load. You may well between the 2 hunters or in a gun rack for quick access. 770, Ruger 1,77, Magnum Research Mountain Eagle, And/or they possibly just blown up guns, and usually blaming it on something else. the follower), then on reassembly again to reconnect them The 1982 extension back on part way, do it over again but with the 3/8" bolt thru the But if it fails to close completely it is usually not caused The demand of used REMINGTON 7400 rifle's has fallen 17 units over the past 12 months. Well, magazine release increased in size. It seems that old guns are like many of us, in that just don't know when to give B-78, Ruger, Remington 40-XB, Schultz and Larsen, Ruger insert. bolt to less and larger lugs. installing the lead shot as a spacer under the spring. The factory advertisement says felt recoil is I decided on the .243. Also here the brush, replanted A They also had a Are you hunting with the ammo or wanting to shoot long range targets? placement of the hole so gunsmiths could do it. Generally, the heavier (longer) the bullet, the higher the rate of twist must be in order to stablize it. the magazine. remove the thin dual eared spring under the nut. No factory replacement parts force generated over time. changed to the Model 740 Woodmaster on May 22, 1950.

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