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one of us |
Expect about 500 rds for tack driving accuracy maybe more if you use a stainless steel barrel and less with Chromemoly(if you shoot slowly and don't overheat the barrel)and about 750 usable. You can see serious barrel erosion in less than 200 rds. Frankly, I've had better luck with a 300 ultramag with a 28-30 inch barrel. You can get pretty much the same velocities with longer barrel life less powder and cheaper brass.-Rob | |||
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| one of us |
Depends on how you use it...If you fire 50 fast shots through it, then it will probably ruin the barrel....If you be sure and keep it cool it will last 500 to a 1000 maybe...that caliber will lose accuracy at 500 for sure...Its pretty hard on barrels if you feed it a steady diet of hot stuff. ------------------ | |||
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| <Sniper> |
Definitely going to keep the barrel cool. I don't think I could handle 50 shots at one setting anyway lol. | ||
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| <bigcountry> |
Guys, I am shocked to hear this. 500 rounds. For a gun you love, that don't sound like much. I have a Rem. 700 BDL 300RUM and have already shot 100 and not come close to finding a load she likes. I was thinking about trying Tubbs Bore lapping but now think twice. | ||
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| <Sniper> |
I think you'll find a little longer barrel life with the 300 RUM. It is not quite as hot as the 30-378 Weatherby. | ||
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| <Bill> |
This is what Saeed says: "To those of you who are interested in this kind of cartridge, you might have a look at our data on the 300 Pegasus. We found very noticeable throat erosion in that rifle after only about 50 rounds! 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. All our bullets were molly coated." 50 rounds fired � no noticeable throat erosion. 70 rounds fired � slight erosion is noticeable just at the beginning of the rifling. It extends for about 0.040 of an inch. 100 rounds fired � no noticeable increase from above. 125 rounds fired � erosion is very noticeable, and the eroded area seems to have increased slightly. This is the link: http://www.accuratereloading.com/30378wmag.html [This message has been edited by Bill (edited 10-11-2001).] | ||
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one of us |
Hummmm..... Let's see.... I have a Winchester Model 70 in .243 that I have been shooting since the early '60s. Probably has around 6,000 rounds through it, and it still shoots 1/2", 5-shot groups at 200 yards. 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. I have a Ruger 77 in .25-06 Remington since around 1986. Probably has over 9,000 rounds through it, and still shoots 1/2", 5-shot groups at 200 yards. I have a Ruger 77 in 7mm Remington Magnum since around 1989. Probably has around 2,000 rounds through it and it still shoots 1/2", 5-shot groups at 200 yards. 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. All still shoot less than 1/2", 5-shot groups at 200 yards. I have a Mossberg 44US since around 1948, has who the hell knows how many rounds through it! It went uncleaned and totally uncared-for for over 15 years, and it still shoots 3/4", 5-shot groups at 100 yards. Now, all that being said, yes I have shot out barrrels! Namely on a .220 Swift and a .264 Winchester Magnum. However, that was in my "highest velocity possible, 10% to 15% over any published load" days! 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. As for the throat erosion with the moly-coated bullets...remember the moly-caoting is extremely hygroscopic! | |||
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| <500 AHR> |
Rob, I wasn't surprised by your life expectancies, but was surprised by the statement that stainless outlasts chrome moly. In my experience the opposite has proven to be true. Generally speaking I found that good old fashioned ordnance steel (managense alloy) lasted half as long as chrome moly with stainless splitting the difference. Todd E | ||
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| <Eric Leonard> |
ricc.you should fell lucky you have the only 4 rugers in existince that will shoot .5 inch 200 yard groups. | ||
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| one of us |
Moly coating is not hygroscopic. I do not know where this opinion originated. I cannot speak for the lower grades of moly, but the moly we use is left in an open container and through the rain season, with our town right on the coast, it is still bone dry. There are rifles we use for experimental purposes that have not been cleaned for several hundreds of shots in four months other than a wipe down and a dry nylon brush down the bore after shooting. The chrome moly barrels show no corrosion at all. Throat erosion and barrel wear go hand in hand with pressure and temperature. Reduce both and you will extend barrel life dramatically. 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. Increasing that surface area by getting the pressure curve to peak later in the bore will extend barrel life a couple of times over. ------------------ | |||
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| <Don Krakenberger> |
SNIPER--Do you own that sako? I have one and have "mediocre" feelings about it. Mine doesn't seem to like heavy bullets. I've tried just about every 180 grain combo with not great accuracy. (some day I've got to try some of Gerards bullets). Anyhow, the bullet it likes is 150 barnes xlc. It will run those at about 3700 fps and do 4-4.5" groups at 300 yds. NOW THE PROBLEM!! The gun seems to like to be "fouled" to shoot good.--Usually about 10-13 shots. I don't know why. AND in 70 degree weather 2 shots and you're ready to fry and egg on the barrel!! If you find your gun loves a load please post it!! Thanks Kraky Someday I may rebarrel to 338-378. | ||
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| <Sniper> |
I have not decided if I want to get it or not. If so I'll initially try a 165 grain loading. | ||
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| <Eric Leonard> |
if all the 30-378 will do with 150s is 3700 then by all means get the ULTRA. i get 3650 with the 150 sierra that aint coated,and 3400 with the 180 balistic silvertip.shoots tight too. | ||
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| <Sniper> |
My wife just got two Browning Stainless Stalkers in 300 RUM in the shop yesterday. I'm going to take a look at one tonight. Why in the world does Browning not offer the BOSS on the 300 RUM? | ||
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| <Eric Leonard> |
sniper,if the ultra had the boss i bet it would set your pantlegs on fire.i bet LBG gets you a deal. mr.big | ||
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| <Sniper> |
I know who ya are now...lol Yep...cost plus tax and bkg check. It's awful really all that temptation sitting in the racks...should be against the law. | ||
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| one of us |
Eric... I have many more than 4 Rugers which will accomplish this! If you are so inclined, go to: | |||
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| <Eric Leonard> |
ricc. just jivin ya man.i got 7 rem. rifles that i can pull off groups like that with too,but i may have to shoot 4 or 5 to get 1 to show off.a rifle that averages groups like that 22-250 are extremely rare. | ||
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| <Don Krakenberger> |
Eric--re the comparison between the 30-378 and the 300 rum you are correct!! I really don't think the 30-378 can burn all that gun powder in a 26" tube. Also--remember the unbelievable velocity Saaed got when testing the rum--he outran every 30-378 I know of. Some combo's wind up running fast and some don't. There are alot of guys out there who have put 28-32" barrels on those 30-378's. I think that's what it needs to "shine". I have to wonder what lazzeroni is doing to his version of the TGR's to get them shooting great and having great velocity. | ||
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| <Galaxieltd> |
Hello Everyone, This is my first post and I'm glad I found this forum. I just purchased the Accumark in 30-378 and am NOW concerned with the reported throat erosion possible in only a few hundred shots (as reported by Saeed in the above link using the same rifle) I'm wondering if by using the reduced charges in a recipe, I can minimize the effect or am I going to hace to look forward to a replacement no matter what? I don't shoot more than 3 or 4 groups a month as I work up to season so I won't be plugging many at a session. What is a recommended cooling period for this fluted barrel between rounds to save from heat checking/erosion? I bought this chambering for hunting elk and mule deer out west and wanted a fast round that would be responsive to 200-250 yard shots with up and down hill shots. I'm just starting out on this, so I'm looking for a good hunting recipe. I'm disapointed in myself for not realizing the effects of this cartridge on the throat/barrel prior. Also, the Weatherby comes with the 26" Krieger barrel and the standard Accubrake. This may sound dumb to most of you, but does the Accubrake "add" to the barrel length as far as velocity goes? Or is it not a factor. Weatherby does offer 28" and 30" Kriegers out of the custom shop, but I don't think this needs to be a consideration for me as I'm more concerned with point blank accuracy/speed and 200-250 or so yards. Sorry so many questions. Thanks in advance and I'm glad to have found this forum. ------------------ | ||
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| <txhunter> |
Just remember that the heavier the charge the faster the throat will burn away. People who shoot that cartridge for group size at extended ranges use extra long barrels to obtain the velocity without pushing the powder charge up to much. Extra long barrels start at above 30" and go on out to 40"+. Now the accuracy life of those barrels will will be quite a bit higher than 500rds. I read on Dan Liljas site that he estimates the accuracy life of the 30-378 to be around 1500rds. 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. But there is also absolute barrel life too. That is the point where a barrel will no longer stabilize a bullet and accuracy is wild." Dan Lilja FAQ page http://www.riflebarrels.com/faq.htm#Life That means that he expects the best accuracy from a barrel with under 1500rds, but he also says "But to a score shooter firing at a target, or bull, that is larger than the potential group size of the rifle, it is less important. And to the varmint hunter shooting prairie dog size animals, the difference between a .25MOA rifle or one that has dropped in accuracy to .5MOA may not be noticeable in the field." So the 30-378 with 1500+ rds may not be able to print .25" groups but probably will still shoot under an inch. The life of a barrel is relative to who is using it, if you can afford to shoot 1-1.5" the barrel will probably last you a very long time. Just take care of it. | ||
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| <Pa jim> |
Jeff, Crucible steel provides a special heat and wear tolerant alloy that Krieger makes barrels out of for Black Star called the "ACCU MAX 11" Weatherby may be the new customer on the block, this barrel with a longer length may be wise to look into. | ||
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| <Reloader 1> |
Galaxieltd: The barrel life of the 30-378 for hunting should be ok unless you do one hell of alot of hunting.I am sure Saeeds finding Throat erosion is quite correct but remember alot of 30-378 shooters are long range target and acccuracy is paramount along with many more rounds fired.We have two accumarks in 30-378 with about 200rds through each and throat erosion is showing up but accuracy is about the same as when new.The muzzle break adds length to the barrel but with the dispersion of gas at that point adds no appreciable velocity.My 2 cents | ||
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| one of us |
Hell I fired over 100 rounds just to develop my load which is 122.2 grs of H870 with a 180 Nos BT OAL 3.728 with a 5 shot avg vel of 3439. This load will out of my Accumark without the comp will shoot consistent 1.5 inch 5 shot groups at 300 yards. My rifle will only shoot a max of 2 maybe 3 shots before extended cool down is required. DWM | |||
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| <Galaxieltd> |
Thanks to all those that answered. I'm looking forward to learning and sharing info here. txhunter- thanks for the link and suggestions. 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. Pajim- thanks for that info. Looks promising for the future. I hope that technology goes to ALL firearms someday. Reloader 1- glad to hear your happy with yours (both of them). I don't plan on shooting this alot other than finding the right round for elk. What are you shooting that works well? Are the factory loads shooting well? I haven't even mounted my scope yet so I havn't a clue. Thanks for the input and clearing up the length issue. DWM- sounds like your happy with yours too. Good kick without the brake I bet. Maybe I will start with your recipe and adjust from there. 180 is what I would like to concentrate on. I'll bring some coffee for the shoot. Thanks again and thanks to Sniper for starting the thread. I didn't want to take away from his question and at the same time start an identical thread. I'll be checking back for advice and hope to give a little on what I learn also. ------------------ | ||
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| one of us |
quote: The RUGER BASHERS will be all over this!!! Have fun! | |||
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| <Don Krakenberger> |
Hey Tsturm--I just got back from the bowling alley and I have got to admit that I had a few beers. Read your post. There is NO REASON for you to have to have a job. Simply go to work for the gun companies and let them post your groups. If each company gives you even the slightest commision on their sales increase you will be a rich man. Ruger in particular stands to gain a sales increase beyond belief. All those gun with a "gazzillion" rounds through them and 1/4 minute accuracy--wow--while you're at it make sure you get the scope companies to support your too. Who made the mounts, the brass, what were the bullets?? Wow you are goingto be one rich man. Can I be your agent?? Sorry to be a horses petut--I just can't resist. I'm usually a nice guy till I have a few beers. PS--do you wear glasses or contacts. Hell I got to crack another beer--this is going to make both of us rich! | ||
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| <Don Krakenberger> |
OH Gosh--just re-read the "whole Enchilada" and it's not you I should be having fun with---sorry TSTRUM!! | ||
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| one of us |
<<Extra long barrels start at above 30" and go on out to 40"+. Now the accuracy life of those barrels will will be quite a bit higher than 500rds.>> Ya mean them there long barrels don't get throat erosion?? Do you know what that is?? << I read on Dan Liljas site that he estimates the accuracy life of the 30-378 to be around 1500rds.>> Only under the most ideal conditions- like low temp's [winter] firing every three to five minutes-- with a ball powder, MAYBE. Dan's a good fella-- but remember, he's selling something. He's using the highest figure believeable under IDEAL conditions. Thing is- these steel burners employ very slow powders-- which extend the erosion well down into the barrel. Set backs most likely aren't feasible. Figure a buck a shot-- just for the barrel. | |||
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| <txhunter> |
Did you have a few veers Dim. yUo knoww that willlll get yous IQQ way up ther. I now it did myhne. | ||
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| <txhunter> |
quote: Well I miss poke there. That was two thoughts that got put together as on. I think what my thought was that the 30-378 barrels will ingeneral last longer than 500rds. I do know alittle about erosion and barrel burners I've got one, a 270-300RUM, and shoot a lot of podwer in each bullet. And yes I know Dan is selling a product but I've alway known him to bea straight shooter. He was ansewring a question that was put to him in general. The question to how long the barrel will last is usualy decieded by the shooter. What can he live with sofar as accuracy, how well he takes care of it( does he clean often, wait for barrel to cool, or does he just blast away. | ||
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one of us |
[QUOTE]Originally posted by Sniper: Why in the world does Browning not offer the BOSS on the 300 RUM? "In the worship of security we fling ourselves beneath the wheels of routine, and before we know it our lives are gone"--Sterling Hayden-- David Tenney US Operations Manager Trophy Game Safaris Southern Africa Tino and Amanda Erasmus www.tgsafari.co.za | |||
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| one of us |
I would have to guess that if you take care not to overheat it that you will get at least a 1000 rounds out of one. Alot will depend on if your barrel is moly or stainless. Stainless will last a bit longer. A 1000 rounds is alot of shooting in a gun like that. Its not an ar that your going to take out and shoot 500 rounds in a day out of. Shoot it enough to find a good load and then use it for hunting. Im sure if its used like that your grandkids will still be shooting it. | |||
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