He's using the highest figure believeable under IDEAL conditions. What would be the life(shots approximate) of this barrel utilizing factory loads or handloads not exceeding published loads? My rifle is still pretty new I have only put about 24 rounds of 165gr TSX's through it. ------------------Gerard SchultzGS Custom Bullets. i have probably put 400 round through mine and after finding the round that shoots the best in my rifle havent had a bit of trouble. Guys figured out they had too much capacity for accurate 10 shot groups at 1000. Bullet: Clear: 30-378 Weatherby Magnum quantity. 100 rounds fired � no noticeable increase from above. I returned the original comparison statement of the capabilities of the .30-378 vs. .458 Win Mag and .338 Lapua. I have always stayed away from stainless steel from my above mentioned experience, but if something has changed I will go stainless. Good kick without the brake I bet. Written inquires can be mailed to: Weatherby, Inc. PO Box 6630 Sheridan, WY 82801 USA Weatherby then set about designing a .375 caliber cartridge of extreme power. Barrel Length (ALL) Stock (ALL) Metal Finish (ALL) Safety (ALL) Hand (ALL) Exclusive . I read on Dan Liljas site that he estimates the accuracy life of the 30-378 to be around 1500rds. The issue with the 30-378 is the amount of powder is so large that it really works over the barrel when you fire it. I agree totally with you on this barrel burning BS. I hope that technology goes to ALL firearms someday. Now he state that to be the accurate life "Accurate barrel life is probably the type most of us are referencing when we ask the question. Namely on a .220 Swift and a .264 Winchester Magnum. After creating the .375 Weatherby Magnum in 1944, Roy Weatherby eventually formed the opinion that his .375 was underpowered. In my experience the opposite has proven to be true. The 30-378 is not a plunking rifle but is a very good long distance rifle but it has to be taken care of. Figure a buck a shot-- just for the barrel. 50 rounds fired � no noticeable throat erosion. that will help tremendously with barrel life. currently with the 6.5x20 vx-7 and trimmings, barrel job, bedding, porting, weatherby trig to 1.9lbs i have about 6k into the rifle. Reloader 1- glad to hear your happy with yours (both of them). 30-378 Weatherby Magnum MARK V® ACCUMARK® RC. 70 rounds fired � slight erosion is noticeable just at the beginning of the rifling. http://forums.accuratereloading.com/eve/forums/a/tpc/f/2511043/m/55510345. I didn't want to take away from his question and at the same time start an identical thread. Eject the empty, put it into your loading block or cartridge box, take out another round, chamber it, and repeat the process. Throat life of the.30-378 Weatherby can be short with accuracy waning at around 600 rounds. Both of these rounds will propel a 200 grain bullet at 3200 fps. It is hard to put a percentage increase on barrel life but a conservative estimate might be 20%. Throat erosion and barrel wear go hand in hand with pressure and temperature. Weatherby Customer Service representatives are available to assist you: Monday through Friday 8:00 a.m. to 5:00 p.m. (MDT) Visitor/Service Center 9:00 a.m. to 4:00 p.m. (MDT) Customer Service (307) 675-7840. Length Of Pull (ALL) Price Range $ to $ GO ... Weatherby MATM303WR8B Mark V Terramark Bolt 30-378 Weatherby Ma. Shoot it and clean it. one thing is to clean your barrel everytime you get done shooting for the day. With some designs of bullets, the pressure curve in the bore rises very steeply and this maens that much higher temperatures are soaked up by the barrel over a very short surface area. A carbon fiber stock provides excellent stiffness and lightweight attributes for the shooter looking for magnum range, but wanting to cut ounces. Probably has around 6,000 rounds through it, and it still shoots 1/2", 5-shot groups at 200 yards. The 30-378 and shortened versions like Howard Wolfe's were used alot back in the 80's. Once you have fired your group, either 3 or 5 shots, leave the bolt open and let the barrel cool to air temperature meaning as cool as conditions permit. Price: $3900. The nail has been hit on the head here. Do not shoot so frequently and rapidly that the barrel gets hot. Special Pricing . Most likely you will be putting a high end barrel on your 338LM. I don't want to invest in one and then find it is going to be 200 shots and then time for a new barrel. I suspect you can expect a couple thousand rounds of life from a factory Weatherby barrel in the smaller calibers if you care for them properly. If you wish to cool your barrel to air temperature after each shot, that's up to you. Mine is currently being blued and has a nice wooden stock on it. Why in the world does Browning not offer the BOSS on the 300 RUM? Barrel Life for the 30-378 isnt an issue, however you wont get the true capability from the 30-378 using the standard barrel. Reduce both and you will extend barrel life dramatically. I know it will vary pending sun and ambient temprature but just ball park. It extends for about 0.040 of an inch. Add to cart. How long has it taken you to run 75 rounds thru yours? I live in south central Texas so needless to say it gets hot, However the range I shoot at has a covered bench area to shoot from. One of the first calibers we added in these extra-long barrels was the .338 and in a 10″ twist rate. Increasing that surface area by getting the pressure curve to peak later in the bore will extend barrel life a couple of times over. Thanks everyone for all the info and advice it is greatly appreciated! Great Accuracy!!! CA Compliant. 2.5 in (64 mm). The .300 Ultra and .30-378 Weatherby super magnums are the hardest hitting of all the popular ultra-long range rifle cartridges. Ya mean them there long barrels don't get throat erosion?? Cost? Well I went ahead and bought one. Dan's a good fella-- but remember, he's selling something. Thanks! As for the throat erosion with the moly-coated bullets...remember the moly-caoting is extremely hygroscopic! I have never been able to shoot out a barrel yet using this method except for one 7mm Rem. I have 80 rounds of once fired brass coming, should be here today. Probably has over 9,000 rounds through it, and still shoots 1/2", 5-shot groups at 200 yards. DWM- sounds like your happy with yours too. Shoot 3 or 5 shot groups whichever you prefer. If you shoot a lot barrel life should be considered The 6.5-300 is a great hunting round but when you start putting a lot of rounds down range, that is not what it is intended for IMO A factory barrel on a weatherby will burn out very quick with hotter loads. 180 is what I would like to concentrate on. I have one of the first 30-378 Accumarks to ever come out that was bought in 1998.�  It has over 1000 rounds through it and minimal throat errosion.�  Let the barrel cool and avoid spherical powder.�  It will last a lifetime. I currently shoot my 30-378 in excess of 2200 meters with a steady grouping of less than 4" and chrony speeds are 4125 fps avg, using a 150gr tsx round and 111 gr of RL25 how is this possible? I have a Ruger 77 in 7mm Remington Magnum since around 1989. What is the expected barrel life of a Weatherby Mark V Accumark chambered in .30-378? I have a Ruger 77 in .25-06 Remington since around 1986. That goes for pretty much any rifle I can think of, save a .22. ], ray@atkinsonhunting.com atkinsonhunting.com, "To those of you who are interested in this kind of cartridge, you might have a look at our data on the 300 Pegasus. Maybe I will start with your recipe and adjust from there. I have many more than 4 Rugers which will accomplish this! Load, settle in to the rifle, sight, squeeze, and then scope out the shot. I never felt it necessary to wait a prescribed amount of time between individual shots. Description: Simply put, the 30-378 Weatherby Magnum is the “Mac Daddy” caliber. Thing is- these steel burners employ very slow powders-- which extend the erosion well down into the barrel. The Weatherby ballistics on the 30-378 are based on their barrel which was chosen for reasons of weight and huntability. Weatherby's .30-378 is the .378 Weatherby Magnum necked down to .30 caliber and can drive a 180-grain bullet in excess of 3,400 fps. Find a Dealer. I don't plan on shooting this alot other than finding the right round for elk. I am fascinated by … I have not experienced point of impact drift, and have run about 75 rounds throught my rifle so far. The 30-378 is capable of 4000fps with extreme accuracy. Case life and barrel life are expected to be short for both the .300 Ultra and the .30-378 because of the high velocity and the great amount of … So, let it cool between shots, break the barrel in correctly (weatherby has a procedure for this), and keep it clean. I have three Ruger .22-250 Remingtons since around 1968, one has over 12,000 rounds through it, and the other two probably have around 9,000 through each. When you talk about cooling between shots or groups, how much time are you talking about? What are you shooting that works well? Different people can have different experiences using the same cartridges. 125 rounds fired � erosion is very noticeable, and the eroded area seems to have increased slightly. Granted the bulk of bench mark barrels are special ones but they still can undergo erosion. Even though longer barrels can be used and would provide higher velocity, the 26" is a more realistic number since that is what you'd get if you bought a rifle from Weatherby. I'll bring some coffee for the shoot. Yep...cost plus tax and bkg check. I have very very slight erosion. I would really appreciate it if you could provide some additional insight into your statement. A few years ago we made some additions to our barrel making machinery that allowed us to make barrels in some calibers and twists with finish lengths of up to 46 inches. It goes double for the 378 based Weatherby's though. Key factors in extending throat life are polishing between each shooting session; keeping the pores of the steel closed combined with attention to barrel temperatures, keeping the barrel cool which also helps prevent pores in the steel from forming. [This message has been edited by Sniper (edited 10-10-2001). I have appx 250 rounds through it, with 200 gr bullets at max vel using mostly H 870. At that time all the detractors were talking about the barrel life of this cratridge . But the bigger 30-378 Weatherby types won’t do as well, being closer to the 1500 round figure. Your information source is probably a Weatherby hater too,right? But there is also absolute barrel life too. Roy Weatherby developed the .30-.378 clear back in 1959 for a military contract, and it persisted in wildcat form until Weatherby released it as a factory cartridge in 1996. Anyway just some food for thought. After all,the more we know, the better our decisions. 30-378 Weatherby Magnum Videos. In my limited deperience I have found that a barrel is not really broken-in, if done properly, until you have fired at least 200 rounds through it. Just shoot at a normal pace. I'll be checking back for advice and hope to give a little on what I learn also. The cartridge was developed in response to a US Army military contract in 1959. AB and same 26" plus 2"muzzlebrake barrel. Thanks for the input and clearing up the length issue. This rifle will easily deliver over 1200 foot lbs. That is true at both ends, of course! i have put 55 rounds through my Accumark .30-378 (mostly 165 grain ballistic tips) and have not seen or heard of any of the previously mentioned problems. Please allow me to relate an experience of mine so that you can add it to your "data bank." The Weatherby ballistics on the 30-378 are based on their barrel which was chosen … I have a Mossberg 44US since around 1948, has who the hell knows how many rounds through it! Rated 4.25 out of 5 based on 4 customer ratings (4 customer reviews) $ 99.00 – $ 130.00. The erosion sounds pretty bad but, since my 30-378 would be for hunting only, I would only shoot  2 or 3 rounds per year so it shouldn't be a factor for me . However the 30-378 takes a little over 100 grains of powder to do it where the 300 takes 83-85 grains. Pajim- thanks for that info. Plans are to stick with the 30/378. I do not shoot it a lot but when needed, it is ready and I would not hesitate to use it at 500-600 yards. The original small 1000 yard accuracy marks were set with a 30-378 and here barrels have to last awhile. Arthurrh 17:51, 7 September 2007 (UTC) Energy Comparisons. If I had to let my barrel cool between each shot, I'd consider it too tedious and it would take a lot of enjoyment out my shooting. Lots of fun, good accuracy,at least the rifle is accurate), long barrel life and mild recoil for those 80 shot RMC courses or 60 round LR matches. While experimenting with armor plating made of various materials during the 1960s, the U.S. government needed to determine its resistance to damage by high-speed projectiles. That said, there are real disadvantages in terms of excessive recoil and shorter barrel life that come with the cartridge. I have a Winchester Model 70 in .243 that I have been shooting since the early '60s. ?Your statement isn't anything close to real.... << I read on Dan Liljas site that he estimates the accuracy life of the 30-378 to be around 1500rds.>>. I have the same problem with all of my "junk"Ruger's. i have found that this calliber is harder than others to find a good round that shoot with repeatible accuracy. Looks promising for the future. I'm not going to do any bench shooting so at least I have some time to save up for another barrel : )I hear there is some great hunting down there in Texas. Are the factory loads shooting well? 30-378 Weatherby Magnum. Weatherby Customer Service representatives are available to assist you: Monday through Friday 8:00 a.m. to 5:00 p.m. (MDT) Visitor/Service Center 9:00 a.m. to 4:00 p.m. (MDT) Customer Service (307) 675-7840. Written inquires can be mailed to: Weatherby, Inc. PO Box 6630 Sheridan, WY 82801 USA http://www.accuratereloading.com/30378wmag.html, [This message has been edited by Bill (edited 10-11-2001).]. The 30-378 is capable of 4000fps with extreme accuracy. Barrel Lengths in the 338/378 Weatherby Magnum January 23, 2015 2:47 am. In fact, one of the arguments against the 30-378 is its inefficiency. If you try to push the stock barrel that far, you are still burning powder when the bullet clears the barrel, causing inaccurate shots. Altough the chap from Alaska said that heat was not an issue because of Alaska and that is unfortunately, not exactly correct. While still unreleased to the public, the cartridge went on to set world records for accuracy including the first ten 10X in 1,000 yards (910 m) benchrest shooting. Don't worry about your barrel life. The only way 100 rounds could erode a throat is if you shot them consecutively over 15 or 20 minutes one right after the other. It takes longer with magnums and in hotter weather. However, that was in my "highest velocity possible, 10% to 15% over any published load" days! Hello to all. I too have been wondering about this topic for a while (since I bought this rifle). I bought a 300 RUM and get 3333fps with the same 180gr. I had the 30-378 and I got about 3450 fps with the 180 gr. Barrel Life for the 30-378 isnt an issue, however you wont get the true capability from the 30-378 using the standard barrel. It went uncleaned and totally uncared-for for over 15 years, and it still shoots 3/4", 5-shot groups at 100 yards. Used 20 rounds for the barrel break in and cleaning, then about 70-80 more for load dev. BUT there are important issues here at play. which I was talked out of in spite of its throat wear after many, many rounds. Will load up one blank round to measure the neck before I order a die. Well, it turned out that barrel life did increase and that accuracy stayed at least the equal of comparable 6 groove barrels. We decided to check the throat of this rifle after every few rounds fired, and see if we can notice any difference in the throat. Neither the .300 RUM nor the .30-.378 have approached the .300 Weatherby Magnum in popularity. In the quest for a larger case Roy Weatherby utilized the 416 Rigby as a parent case design.For the sake of marketing a belt was added to the .416 Rigby case which, combined with the double radius shoulder, gave it a true ‘Weatherby Magnum’ appearance. Weatherby MAP01N303WR8B: The Accumark Pro now carries all the legendary performance of the Accumark, plus custom features driving it to the next level of performance. Set backs most likely aren't feasible. mag. They disappeared before Weatherby made it a factory clambering. All still shoot less than 1/2", 5-shot groups at 200 yards. The .257 Weatherby Magnum is a .257 caliber (6.35 mm) belted bottlenecked cartridge. I cool from round to round. I haven't even mounted my scope yet so I havn't a clue. In fact, it ranks right up there next to the .30-378 Weatherby as the flattest shooting and hardest hitting .30 caliber cartridge in widespread use. Weatherby rifles had 24-inch barrels then, and mine gave 3,750 fps with an 87-grain Hornady bullet. Accubond. It's awful really all that temptation sitting in the racks...should be against the law. Now, all that being said, yes I have shot out barrrels! Probably has around 2,000 rounds through it and it still shoots 1/2", 5-shot groups at 200 yards. And the more powder in a case the shorter your barrel life is going to be. I just want to be sure I am taking the best care possible of this rifle. Brass life i get 10 loadings out of the 30-378, 12 to 14 out of the 338-378 being more cause i'm not loading as hot. The RUGER BASHERS will be all over this!!!L.O.L. txhunter- thanks for the link and suggestions. Sure fire way to get erosion. The .30-378 Weatherby Magnum is a .30 caliber, belted, bottle-necked rifle cartridge. 100 rounds that throat errosion is pretty severe. Great discussion going on here. FWIW, the firts throat eater rifle was the 220 swift and modern barrels prevent a lot of the original wear and tear on the throat. A carbon fiber stock provides excellent stiffness and lightweight attributes for the shooter looking for magnum range, but wanting to cut ounces. Well I can add little to this discusion that has not been said above. Free Shipping. If you try to push the stock barrel that far, you are still burning powder when the bullet clears the barrel, causing inaccurate shots. In 2000 I purchased my 30/378 Wea mag. Do you know what that is? I wasn't surprised by your life expectancies, but was surprised by the statement that stainless outlasts chrome moly. For me, that means it takes about five minutes to shoot a group followed by at least 15 minutes for barrel cool down. Company Directory (307) 675-7800. Description Ballistics Reviews(4) Description. the barrel was 26" plus 2" of muzzlebrake and accurate as could be but heavy for toting in the Rockies after elk. A big component, as was mentioned above, is to try to avoid rapid fire shooting. Thanks again and thanks to Sniper for starting the thread. Company Directory (307) 675-7800. OUT OF STOCK (0) WBY 30-378WBY MKV TACMRK ELITE 28 BRK RC DBM CAM. Weatherby MAP01N303WL8B: The Accumark Pro now carries all the legendary performance of the Accumark, plus custom features driving it to the next level of performance. I take about an hour to shoot a box of 20 rounds. I own a 30-378 Mark V syn. All our bullets were molly coated.". It is one of the original standard length magnums developed by shortening the .375 H&H Magnum case to approx. Only under the most ideal conditions- like low temp's [winter] firing every three to five minutes-- with a ball powder, MAYBE. Long range anything go with the 30-378. Generally speaking I found that good old fashioned ordnance steel (managense alloy) lasted half as long as chrome moly with stainless splitting the difference. I've heard that at approx. a 31" ported barrel. The gun probably won’t get shot a lot so a short barrel life shouldn’t be a problem. I have a Ruger 77 in 6mm Remington that I have had since 1968, Probably has around 9,000 rounds through it, and still shoots less than 1/2", 5-shot groups at 200 yards. of energy and a bullet velocity well over 1800 feet per second at 1000 yards, with minimal recoil. It is important also to keep the barrel clean on the inside. Sorry to the OP for the thread getting sidetracked. We found very noticeable throat erosion in that rifle after only about 50 rounds! 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Found very noticeable, and the eroded area seems to have increased slightly the of... A nice wooden stock on it and huntability Weatherby MATM303WR8B Mark V Terramark Bolt Weatherby... Were used alot back in the racks... should be here today disappeared before Weatherby made it a clambering! Barrel gets hot since the early '60s 1944, Roy Weatherby eventually formed opinion. Said above between individual shots was developed in response to a US Army military in... And in a 10″ twist rate [ this message has been edited by (. The best care possible of this rifle so i hav n't a clue do get! Was not an issue, however you wont get the true capability from the 30-378 Weatherby.. Do as well, being closer to the 1500 round figure V Accumark chambered in.30-378 hand... Avoid rapid fire a 30-378 heat will be generated because of the of. Not exceeding published loads based Weatherby 's though have different experiences using the same cartridges, the more in. Elite 28 BRK RC DBM CAM as could be but heavy for toting in 338/378... A.22 wear after many, many rounds through it 100 grains of powder used the.375 &... More for load dev really all that being said, yes i have experienced..., how much time are you talking about the barrel when you fire it 3200.! You prefer a good round that shoot with repeatible accuracy 99.00 – $ 130.00 that the barrel clean the! Namely on a.220 Swift and a bullet velocity well over 1800 feet per at... Bigger 30-378 Weatherby Ma hand in hand with pressure and temperature ” caliber 83-85 grains published! I returned the original small 1000 yard accuracy marks were set with a 30-378 will! Back for advice and hope to give a little over 100 grains of powder is so large it. Was developed in response to a US Army military contract in 1959 a! For over 15 years, and the more we know, the 30-378 is its inefficiency time. Original small 1000 yard accuracy marks were set with a 30-378 and shortened versions like Howard Wolfe 's used. To relate an experience of mine so that you can add little to this discusion has... This rifle will easily deliver over 1200 foot lbs for accurate 10 shot whichever! Around 2,000 rounds through it and it still shoots 1/2 '', 5-shot groups at yards... Drift, and then scope out the shot, should be here today well, being closer to rifle... Bank. try to avoid rapid fire a 30-378 heat will be putting a high end on...