Never miss a post! Science to the Rescue. The 338 Lapua has a case capacity of 114.2 gr of water, while the 340 Weatherby- 98.0 gr, 338 Remington Ultra Mag- 113 gr., and the capacity of 338-378 Weatherby is 125 gr. My Rem 700 was shooting sub 1/2" at 100 yds right out of the box with the Nosler 225 gr Accubond. There is plenty of choice. The .338/.378 Wby might be … The brass last for about 6-7 loadings, but we load ours pretty hot. Gun Parts - Stocks, Barrels, Actions, etc. Hi the 338 Edge is made by necking up a 300RUM to 338 with no other changes as the best of my knowlidge si it does not require fire forming any diferently than any other new case. We both shoot Barnes Trip shock bullets. Practically there is little difference in these two rounds. It appears that.340 Weatherby and.338 Lapua factory cartridges start at about $4.50 each, while.338-378 Weatherby ammo runs about $7 per cartridge and.330 Dakota cartridges cost about $10 each. Showing all 6 results. 338 Edge if you are going to reload and will not require the availability of factory ammo. I currently have a Sako 75 in 300WSM that I've taken multiple cow elk from 250-450 yards. Post. can you explain why? It probably boils down to personal preference. Velocities are identical to the standard .338 Lapua loading consisting of a 250 grain bullet at 2950fps. Having said that, there are several guys who shoot the 340 Wby and love it. I have never found it difficult to load for at all. For a better experience, please enable JavaScript in your browser before proceeding. The 338's are easier to tune and stay in tune over a broad range of conditions. I am not sure if Sako chambers the 338-RUM? AND, the Nosler 33 fits in a standard, long action receiver. *.338 Lapua features a Chrome Moly barrel GUARANTEED SUB-MOA ACCURACY All Mark V® rifles are guaranteed to shoot a 3-shot group of .99” or less at 100 yards (SUB-MOA) from a cold barrel when used with Weatherby® factory or premium ammunition within Two-Years of Verified Purchase Date to Original Purchaser. I have the 338 RUM in 700 action 26" barrel. 1. Driving a 250-grain bullet to 2940 fps, for over 4,800 ft.-lbs. Apparently, the .338 Norma Magnum is quite the shooter, although case capacity is slightly lower than the .338 Lapua Magnum. A friend ask me recently about the 338 s and I told him if he wanted "more" to get an Excaliber, if he wanted a good hunting rifle that matched the others ballistically, get a 338-378 Weatherby or even a 340. The 338 Lapua Magnum is one of the better known .338″ diameter cartridges on the market today. Long Belted to the.340 Wby. I would think that belted Weatherby cartridge has some draw backs due to the head spacing issue...i.e.….little more finicky on accuracy, pertaing to the double radii. Shooting the 260gr Peregrine Range Master out to 2000 meters from a 338-378 Weatherby Magnum. Both are great rounds, and you cannot go wrong with either. The 338-Lapua would be a handload only rifle. Others have mentioned cheaper brass, a little more speed, non belted case.........all are positives. 340 Weatherby Magnum. are significant and cannot be ignored. Both of ours are extremely accurate. The ball… The .338 Lapua Magnum =2,850 FPS/ 4,560Ft Lbs energy. For every action there is an equal and opposite reaction; that is one of the physical laws of our universe. The .340 Weatherby currently maintains limited popularity and could perhaps be called a classic cartridge. It is capable of sterling accuracy. of energy at the muzzle, the .340 Weatherby is a serious cartridge which will test the mettle of any bullet, as well as test the abilities of any … Travis Santelmann • 4 years ago. Off the shelf dies and the fact you probably won't need a custom reamer also point to the 338's. I am looking on sending this gun out ASAP to make this year’s elk season. Fortunately, there is a better, simpler way thanks to modern ballistic … Need some help. His is a Wby Accumark and mine is full custom job on a Rem 700 action. .338-378 Weatherby Magnum= 3,060 FPS/ 5,280 FT LBS energy. I have a 338RUM in an HS-Precision and it shoots great. While it may not have a particularly large following in the hunting community, the military/LE/tactical community are enamored […]. The .338-378 has devoted fans in the long-range hunting sub-culture, but only exceeded the .340 Weatherby’s muzzle velocity by 119 fps; a small reward for the huge recoil it produces. The 338 Lapua Magnum is one of the better known .338″ diameter cartridges on the market today. The .340 Weatherby is somewhat similar to other super .338's (.338RUM, .330 Dakota, .338 Lapua, .338-378 and so forth, not necessarily in relation to case dimension, but to the fact that all of these can shoot quite fast and use the same bullets. Mag is outstanding. Mag. For better performance get one of the smiths here to bump the chamber up to .338/300...I am talking about the larger bullets... /ubbthreads/images/graemlins/wink.gif. Comment. If you enjoyed the video PLEASE SUBSCRIBE to our channel and share this video with your friends on social media. New build does not shoot. I will be using the Barnes X bullets for the elk the possibly looking at some other bullets for whitetails and hopefully an Alaska trip in the near future…(moose) I would like to know why I should sway one way or another….velocity, accuracy, ease of finding load, all the plus’s and minus’s if anybody has any experience in these two calibers. The 30-338 is fun to shoot but I don't expect anywhere near the barrel life of the .338's. On the extreme end, the 338-378 Weatherby and on the other end of the the Weatherby spectrum, the 340 Weatherby which is excellent. So I would like to develop the first load with the triple shocks and carry a few spare factory boxes to bag the elk. The.338 Win. A few fps slower for the RUM and a few fps faster for the Lapua, but they are essentially the same. 300 Win Mag vs 338 Lapua vs 338 Win Mag: Cartridge Sizes The shared heritage of the .300 Win Mag and .338 Win Mag, as well as the unique roots of the .338 Lapua, is obvious in the photo below. Browse our extensive selection of firearms and accessories on BudsGunShop.com. RDM, you mention with an edge you have to fireform brass. 338 Lapua. My 200 gr Hot Cor bullets go 3260 FPS and my 225 gr Accubond bullets go 3178 FPS.I use RL25 powder. 308 Winchester Barrel Length and Velocity: Winchester Super X 180 grain Power-Point, Modular Driven Technologies (MDT) LSS Chassis Review, Remington 700 SPS 243 Win to 6 Creedmoor conversion: Budget precision rifle, Installing Venom’s Antidote muzzle brake & tactical gas block on an AK (Kalashnikov) barrel- cut, crown and thread an AK barrel, Review: Shooting the MAGPUL Ruger 10/22 Hunter X-22 Stock, Cobray Terminator Shotgun Pictures: One weird shotgun, Building a Custom Remington 700 .308 Tactical Rifle, Building a 300 Winchester Magnum Precision Rifle, Ruger 10/22 accuracy upgrade: Shortening factory chamber to improve accuracy, Remington Arms “One at a time” 1969 Manufacturing Video. Brass is cheaper for the RUM. The .338 is also able to be fitted with much heavier bullets than the .300 Win Mag rounds. Dads shoots about .70moa when he does his part. Follow on Instagram. The similarities of the.333 O.K.H. 338 RUM if you have to be able to use factory ammo 3. Just look at the amount of powder that can be loaded into the .300 Win Mag vs .338 Lapua Magnum. I'm not a reloader. Don’t let the “.340” fool you. The .340 Weatherby was introduced to compete with the .338 Winchester Magnum which had a hold on the market at the time. Enter your email address to subscribe and receive notifications of new posts by email. The .338-378 Weatherby cartridge uses the .378 Weatherby case, necked down to take a .338 bullet. Cartridge Selection. I started thinking about the 338-Lapua instead? I need some expertise in the reloading aspects or benefits and drawbacks for these two calibers: 338 Ultra Mag and 340 Weatherby. And 210 more fps. The model I am looking at is the TRG hunting rifle (not the tactical model) with a 26"-barrel. The 338-Lapua is chambered in Sako rifles. In true Weatherby fashion, the .340 generates velocities almost 300 fps faster than the .338 Winchester Magnum, and brings a correlative amount of recoil as well. I have had a 338 edge, several Lapua's, and a 30-338 Lapua. My first step is to make this years elk hunt a sucess then see about the more radical load development. Both the .338 RUM and .338 Lapua are loaded to pressures of between 60,000 and 62,000psi. How it actually performs though is another thing. We love them. Im thinking maybe he has it ported to keep the weight down.? If one is to strictly use a .338 for a general rifle, then the 338 Win. Cartridge Type: Rifle Height: 2.825" Width: 0.531" Average FPS: 3033 Average Energy: 4615 Average Gr: 226 Recoil: 3.3 Power Rank: 6.85 of 20 The .340 Weatherby Magnum was designed in 1962 by Roy Weatherby, and released onto the commercial market in 1963. December 3, 2017Bill Marr0. Thanks for all the good info, I have ordered the 338 RUM today, and waiting for its arival. I don't have experience with the 340 wby but I have a 338 RUM, as do several of the guys here at LRH. Sako also chambers this same rifle in 340-Weatherby. .340 Weatherby Magnum. The parent case is a .300 H&H Magnum expanded to fit a .338 bullet. While both of these can be considered large cartridges, especially when compared to others, the .338 LM is at another level. 340 WBY the cost of brass is the bigest issue it is made by Norma and is very consistant but a bit soft if you use max loads. Theres no way you could get me to touch that off! If i was you i would look at these calibres in this order. Like the .338 Lapua, it is a great candidate for the 300 grain long-range … If one is after long shots, then the RUM, Lapua and the king of them all, the 338-378 Weatherby. The 338 lapua mag was developed from day one to be a long range target round. This one still features a .338 bullet, … My past experiences with Barnes bullets have been the best hunting bullets out there. 340 Weatherby v 338 Lapua Magnum. I shoot Winchester Supreme 180 gr Accubonds, and I like that round quite a bit. Otherwise pick a name he thinks is cool --Edge, Lapua, Excaliber, Titan, Weatherby, Rum, Ultra and enjoy his rifle. Mag. Use our advanced product search tool to find exactly what you are looking for! The following ammunition cartridge ballistics information and chart can be used to approximately compare .300 Weatherby Magnum vs .338 Lapua Magnum ammo rounds. The .338 RUM and the .338 Lapua essentially duplicate the .340 Wby ballistics. JavaScript is disabled. Mark V® Accumark Base Model $ 2,099.00 Add to cart Build your own; Mark V® Accumark Elite $ 2,799.00 – $ 2,999.00 Select options; Mark V® Accumark Pro $ 2,499.00 – $ 2,699.00 Select ... Weatherby’s rich heritage began in 1945 located in Southern California. Nosler has just introduced a new SAAMI-spec .338-caliber cartridge, the 33 Nosler, which is based on the 404 Jeffrey parent case. Mine is about .4-.5 when I do mine. Short Belted to the.338 Win. and the.340 Weatherby Magnum (1962) changed that. This means that the momentum of a rifle's reaction will exactly equal the momentum of the bullet and powder gasses ejected from the barrel. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, bullet wei That’s about a 20 percent increase in case capacity. The .33 Nosler and .330 Dakota are a bit slower. Compared to the .340 Weatherby the .338 RUM has slightly greater powder capacity however .340 Weatherby Mark V rifles have a good magazine length and great freebore which in its own way increases velocity potential. I have two Weatherby's and like them, so I am not a Wby basher. my understanding is this is not the case.no pun intended. So while the 340 weatherby compares to the 338 lapua on paper that's why you never hear about it. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Savage B22 Precision Rimfire Rifle Review, Beretta M1951 mystery- cutting our way to the truth, Gunsmithing: replacing a curved steel butt plate with a rubber recoil pad, Project Guns- Gunsmithing articles and posts. I can buy factory ammo for both the 338 Rum and 340 Weatherby, which has made me stick to them and not go with a 338 Edge You are using an out of date browser. Trueth is, the 338 Lapua was at one time the end all of long range factory rounds. But that said, I would go with the 338RUM. Shooting groups with tumbling bullets!?!? No kiddin, I'm thinking the same thing. That means it is a whopping big cartridge case. The 338 RUM is only slightly smaller in case capacity then the 338 Lapua and the 338 Edge (Shawn C.s brain child) is a bit larger in capacity and can be used in vastly more actions. Also, there is the issue of limited or sporadic availability of these cartridges. 2. The 338 RUM has a velocity edge of around 100 fps and as you mentioned, has no belt and no freebore. I have had good results with H1000 in the 338 RUM, it will be plenty full though. By Chuck Hawks. Then go for the long range dusted whitetail when I get back here to Texas. The only reason I even know about 340 weather is because my father is a weatherby fag and always talks about how the (insert oddball wildcat blah blah mag cartridge) is (insert … Big-game cartridges in .338 caliber have become popular, including the (1) .338 Winchester Magnum, (2) .340 Weatherby Magnum, (3) .338 Remington Ultra Mag, (4) .338 Lapua and (5) .33 Nosler. Mag. I’ve sent hundreds of rounds of 340 Weatherby down range and was enamored with the cartridge in the late 90s. and of the.334 O.K.H. This efficient new cartridge rivals the velocity and energy of the proven .338 Lapua Magnum while using significantly less powder. The .338-378 Weatherby case holds 137 grains of water compared to the .338 Lapua, which holds 114 grains of water. The 338-378 Weatherby, is making over 720 ft lbs more energy with the same weight bullet. Both my father and I have .340wby's. It may not display this or other websites correctly. 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The 340 Wby and love it first step is to strictly use a bullet. Of between 60,000 and 62,000psi Wby basher.300 H & H Magnum expanded to fit a.338 bullet model am...