6x47 barrel life

[shooter65]

Ball park figure doing slow fire??
Will be used for varmint competition.

 

[halfmoanut]

Just removed barrel #1 from competition 6x47Lapua. 750rds then a new throat cut,then 500rds and accuracy just started to taper off.Waiting for new tube.It was a bartlien 1 in 8 twist.All loads were between 38grs - 39grs of H-4350.

 

[shooter65]

so they are barrel burners?

 

[distantfoe]

Wow, got 1100 roudns down mine and it still shoots inside of .25moa. Using 38.5gr H4350.

 

[dsbw]

Wow!! That is certainly NOT good news. I'm on 500 rounds with mine,Border 1 in 8). Using it mostly for hunting, but it has done a fair bit of F-Class shooting. I was hoping for at least 1500 rounds??

Someone told me the Border barrels lasts longer than most others??

Can we have more responses on this one, we need to see who's shooting what kind of barrel, and hopefully some shooters doing much better?

 

[Raptor]

I had a 6XC shooting 38grs of H4350 with the 105s and at 1800rds I had it rechambered to a 6mmSuperX and it now has close to 3000rds through it. It was still shooting great at 1800rds but I wanted more poop for the 115s so went the 6mmSuperX route.

I am now rebarreling it but it was still shooting around .5moa at 600yds. It just wasn't doing as well as I thought it should at 800 to 1000yds.

 

[tjonh2001]

Just removed barrel #1 from competition 6x47Lapua. 750rds then a new throat cut,then 500rds and accuracy just started to taper off.Waiting for new tube.It was a bartlien 1 in 8 twist.All loads were between 38grs - 39grs of H-4350.

sounds like somthing went wrong

ive have 3 6x47 lapuas and i shoot 2 for fclass. i had over 2000 rounds in one and it took 2nd in state last year and won 3 matches with it. ive also heard guys getting 3000 and still holding 1moa. as for loads 2 shoot 105 bergerbehiund 4350 and 1 shoots 115dtacs with 560 vv. the one explained above shot a bergers all its life at 3200

 

[dsbw]

so where are we now with this topic. The last reply surely sounds like the most realistic, I would imagine that you should get well over 2000 easily, even with competition shooting only?? There must be more shooters out there who are close to shot out with their first barrels, can we get more opinions/experiences please?

 

[dsbw]

Any new information on this one? I'm about to pull my barrel, either for new throat or different chambering, would like to hear from regular 6x47 shooters on realistic barrel life with comp shooting and/or varminting?

Tx

 

[mikecr]

Sounds like shot timing and higher expectations.
Even a tiny little 6PPC, competitively used, degrades in performance by 1,000.
While for 'hunting'(mosquitoes) a 6PPC would easily go over 3-4 times that.

 

[Mr. Ten-X]

Cannot speak directly to the 6x47L, but am interested in that barrel life as I have a pipe ordered for a 6x47L project.

Had a conversation with Norm Houle some time ago because my long-throated Dasher dedicated to 105/107 booolits (2985fps) had started to lose its guilt edge at 1700rds. By 2100rds that barrel was pitching 9's on the MR target at 600yds. This was a Krieger cut-rifled barrel and I'm not sure what barrel brand Norm was using. He shot a mix of 85-115gr bullets in his 6XC for NMC shooting and claimed that he'd pull his barrels at about 1600rds.

Was hoping that I could see 1500rds give or take from a 6x47L using straight DTACS, but that may be asking a bit much. Would like 1200+ and I've got a sneaky suspicion that may be what I'll get for guilt-edge accuracy for F-Class purposes.

 

[jcvibby]

If someone ran the 6x47 L slower, would they in theory get more barrel life.

I'm thinking about running the 115 dtacs slower than the norm. I dont think I need them to be super hot, and if it adds barrel life it might be the best overall situation. As long as I can find a really accurate mild load, that's what I may go with.

I'd like to go over 2000 rounds with it for sure

 

[mikecr]

A 6x47L is basically a 6Dasher.
It's a competitive design in that it's the right capacity for 105-108gr bullets with medium speed powders. But higher pressures, faster shot rates, higher expectations(all invoked by competitors), produce competitive barrel lives that are relatively short.
I'm confident shooters will find that even the 6.5x47L in competitive use, will not provide the barrel life many have predicted.

Departing from design rarely works well as it always carries a price.
The 6x47L, like the slightly bigger 6XC, doesn't quite reach capacity needed for 115-117gr bullets -with good barrel life. And atleast the 6XC uses a large primer for powders/amount of powders expected in this.
For the heaviest of 6mm bullets AND good barrel life, you need something like a 6CM. This provides enough capacity for H1000(slower/cooler) and uses large primers.
With this it's just a matter of use. On a nice day I don't know that a 6CM pushing 115gr bullets could hold it's own in competition with a 6x47L pushing 108gr bullets(at higher pressures). But a 6CM will definitely provide a higher round count, which is more competitive in the long run.
Go any larger than a 6CM, and barrel life tanks.

There is a parallel in 26cal(w/resp to competition).
The 6.5x47L, the 6.5Creedmoor, and the 260AI.

 

[hoverp]

If someone ran the 6x47 L slower, would they in theory get more barrel life.

I'm thinking about running the 115 dtacs slower than the norm. I dont think I need them to be super hot, and if it adds barrel life it might be the best overall situation. As long as I can find a really accurate mild load, that's what I may go with.

I'd like to go over 2000 rounds with it for sure

1700 rounds and still tac driving with 38 g H4350 and HbN Dtac 115's. (see 6mm and 115's
post )
this mind you is an XTC gun in 6XC, lots of rapid fire, and practice rapid fires......

 

[jcvibby]

I have 1000 115 dtacs but I'm gathering I should sell them and buy some 105 hybrids???? Is this a fair statement?

 

[mikecr]

Not sure why anyone would be rapid fire 'tac driving' 115s standing/kneeling/prone to 300yds.
And it doesn't seem like degraded performance in a barrel could be sharply defined amidst all the challenges in this.
I don't mean any offense in this,, but -accurate barrel life- is easier to define with slower firing off a rest(fewer unrelated challenges).

jcvibby, you can back off in load/pressure to improve barrel life, for sure.
But 115s from a 6x47L would run below advantage compared to ~105gr results.
And from what I've been reading the results in 6x47L/~105gr seem as good as dashers.

With 115s you get higher torque(faster twist), more recoil, slower powder, and lower velocity. The advantage tips to it only at long ranges, and only with velocities you'll never reach from a 6x47L capacity.
A 6XC is barely big enough to mess with 115s, and it's pretty well established that barrel life with this combo is not stellar.
Hence the 6CM as a popular solution.

 

[hoverp]

Not sure why anyone would be rapid fire 'tac driving' 115s standing/kneeling/prone to 300yds.
And it doesn't seem like degraded performance in a barrel could be sharply defined amidst all the challenges in this.
I don't mean any offense in this,, but -accurate barrel life- is easier to define with slower firing off a rest(fewer unrelated challenges).

jcvibby, you can back off in load/pressure to improve barrel life, for sure.
But 115s from a 6x47L would run below advantage compared to ~105gr results.
And from what I've been reading the results in 6x47L/~105gr seem as good as dashers.

With 115s you get higher torque(faster twist), more recoil, slower powder, and lower velocity. The advantage tips to it only at long ranges, and only with velocities you'll never reach from a 6x47L capacity.
A 6XC is barely big enough to mess with 115s, and it's pretty well established that barrel life with this combo is not stellar.
Hence the 6CM as a popular solution.

Pretty simple for me. I can load one load for all events. From offhand to 600 in xtc , and 800 to 1000 LR . Mid range as well.

I get one bullet and one load . All ammo is prepped the same. Extra rounds, same. I get to know the load very well. How it behaves. It does exactly what I need it to do . I like simple. This is simple. Rapid fire with 115's? Yep. I'm shooting a 6xc, not a M1, recoil is not a factor. The 6xc handles the 115 just fine thank you. If you shoot 300 rapids in the wind, 2920 and a 115 does just fine.

2920 fps is good accuracy and great case life as well as the barrel is holding great. 1700 rounds and a lot of xtc rapid fire later it is still capable of great accuracy. So I disagree with your blanket statement about barrel life. Based on what bullet and barrel, cleaning routine, HBN? Many factors.

What is not to like. This may not be for everybody. But I like simple, and time is of the essence for me in my loading process.

My test for accurate barrel life is to shoot the rifle off the bench with my target scope on it instead of my rear iron and test it out with the competition loads. I keep track of performance along the life of the barrel, not rapid firing with irons.
Just wanted to share my experience.

Also tell me the 6cm can load 115's at mag length and keep the bearing surface above the neck shoulder junction donut . It can't. And plenty left to chase the lands as the barrel life progresses.

Not flaming on. promise!

 

[FroggyOne2]

I figure that many are using the 115's due to the hybrids may be hard to get ahold of. I have thought the same thing, why shoot the bigger bullet, when you can push a smaller bullet of the same BC faster!

 

[hoverp]

I figure that many are using the 115's due to the hybrids may be hard to get ahold of. I have thought the same thing, why shoot the bigger bullet, when you can push a smaller bullet of the same BC faster!

Is the G7 the same between the hybrid and the 115pointed DTACS(Sierra)?

 

[FroggyOne2]

No I was refering to the Berger 115. But the way I understand it and may be wrong, but from what I do understand is that the pointed SIE115 DTAC and a unpointed Berger 115 are pretty close. When I ran the numbers on the JBM, the SIE was one tenth of an moa outside of the Berger bullet. The G7 BC according to the Berger website list the 105 Hybrid having one digit higher of BC over the Berger 115. So in theory, there is no reason to shoot the 115's unless you can't get the 105's. With the lighter bullet going faster, it stands to reason, that it would be insde the slower moving bullet of the same BC. I could be wrong, wouldn't be the first time.