6mmbrx barrel life?

[painless2]

My 6mmbrx went"south" right at 1500 rds. Approx first four inches after the throat cooked and firecracked.
SS krieger barrell in 8 twist. Anyone else out there with similar short barrel life? Is this normal?
Standard load was 32.6 Varget and Berger 105VLDS in .015.
Tom

 

[bozo699]

My 6mmbrx went"south" right at 1500 rds. Approx first four inches after the throat cooked and firecracked.
SS krieger barrell in 8 twist. Anyone else out there with similar short barrel life? Is this normal?
Standard load was 32.6 Varget and Berger 105VLDS in .015.
Tom

I wouldn't call 1500 rounds short barrel life, how many rounds were you shooting in your strings? What kind of accuracy did it have and what is it now?
Wayne.

 

[walker2713]

Just curious, what kind of velocity were you getting with 32.6gr of Varget?

Sounds hot to me....but every barrel is a world unto itself.

George

 

[DennisH]

32.6 grns shouldn't be hot! IMO

1,500 rounds is short for this barrel.

I hope mine last longer than 1,500! I'm shooting 33.5grns, and most people I know are around 32.5 to 33.5 with their BRX. There getting 3k plus on their barrels!

Dennis

 

[walker2713]

My bad....my old eyes skipped over the "x" :-[

 

[brxbrad]

I've got approx 2250 down the pipe with a Kreiger at 33.2 gr Varget and 105's. It still shoots very well. I hoping to see 3k to 3.5 before it goes.

 

[bozo699]

I've got approx 2250 down the pipe with a Kreiger at 33.2 gr Varget and 105's. It still shoots very well. I hoping to see 3k to 3.5 before it goes.

Brad,
I hope my new one does as your has, my last one has about the same as the op's and it has dropped off in accuracy, you really have to be on top of things to hold 3/4 minute of angle at 1K.
Wayne.

 

[JOHN708]

I'm on my 8th 6mm BRX barrel. I've had one go at 2000 rds. but they usually last 2500-3000 rds. Load: 107 Serria's, 31.5-32.5 grs. of Varget. I consider a barrel shot out when a 20 shot group goes over 3/4 in. at 100 yds.

John Skowron

 

[T 700]

Don't mean to hijack your thread, But what is the barrel life for the dasher, before you have to set it back. Is it like the BRX??

 

[bozo699]

Don't mean to hijack your thread, But what is the barrel life for the dasher, before you have to set it back. Is it like the BRX??

Should be virtually the same, powder chg is the same, case capacity is almost identical.
Wayne.

 

[T 700]

forgot to ask, Would that be 1500, or 2500. Just wondering what i can expect out of it. i am runing Varget 32.5gr with a 105 VLD

 

[bozo699]

forgot to ask, Would that be 1500, or 2500. Just wondering what i can expect out of it. i am runing Varget 32.5gr with a 105 VLD

Well the others on here are getting 2500-3000 it seems I hope that is what I get on my new ones and I hope you do as well.
Wayne

 

[Forum Boss]

I'm on my 8th 6mm BRX barrel. I've had one go at 2000 rds. but they usually last 2500-3000 rds. Load: 107 Sierras, 31.5-32.5 grs. of Varget. I consider a barrel shot out when a 20 shot group goes over 3/4 in. at 100 yds.

John Skowron

John -- I have to chuckle a bit. Among a group of average shooters, 20 shots in 3/4" would be considered excellent accuracy for a TWENTY-shot group. But BRX/Dasher shooters have higher expectations -- I know!

 

[Bob3700]

Right now I have 1700 rds down the Bartline, 5r, 8T bbl and shoot it in NRA MR and LR competitions.

33.5 gr Varget and a 107 SMK. Bbl still looks really good. I would expect 3000 rds from this one.

Going to set it back an inch or so. Several good shooters have mentioned that setting the bbl back at half life has really increased the accuracy. Won't cost me a thing except my time so will have at it.

Bob

 

[T 700]

I hope mine last 3K, but 2000 to 2500 would be great.

 

[bozo699]

I'm on my 8th 6mm BRX barrel. I've had one go at 2000 rds. but they usually last 2500-3000 rds. Load: 107 Sierras, 31.5-32.5 grs. of Varget. I consider a barrel shot out when a 20 shot group goes over 3/4 in. at 100 yds.

John Skowron

John -- I have to chuckle a bit. Among a group of average shooters, 20 shots in 3/4" would be considered excellent accuracy for a TWENTY-shot group. But BRX/Dasher shooters have higher expectations -- I know!

;D

 

[Rustystud]

I've seen John708 shoot twenty shots under .5" at 100yds more times than not. The 6mmBRX is a relatively easy cartridge to tune. If it is not over loaded it has proven to be the best combination of ecconomy and accuracy for 600-1000 yard shooting. There are several accuracy nodes but the ones between 3020 and 3080fps will give you the best overall results. Many shooters have experimented with different powder combination and Varget has been the top performer. When a 6mmBRX is shooting well it is hard to beat. When it goes it goes rapidly usually between 2700 and 3200 rounds. I have set many back but I believe that it is a cartridge that should be shot straight through and not set back. I have chambered over 500 6mmBRXs and suggest a premium barrel with a 1:8 twist. I prefer a 5R barrel but 4 grove barrels do just as well. Some like .236 and some prefer .237 bores. With the 105 and 107 bullets they have a long bearing surface I think barrels .2365 up to .2375 are better. I prefer 30-32.25" barrels. If your new 6mmBRX is not shooting ten shots at 100 yards under .4" something is wrong. The cartridge is capable. Primers, brass consistency, powder lots and measurements, bullet consistency, and bullet seating are key to accuracy. I expect single digit ES usually under 6fps.

Nat Lambeth

 

[ar15topgun]

Nat I was wondering how long it would take you to chime in.