6 BRA powder?

[kyotekiller25]

Picking up a 6 BRA and was hoping I could use 2 powders that I have a bit of on the shelf from other rifles I shoot. I have 8# of N540 that I use in my 223 and 15# of H4350 that I use in my 6 Creed.

Are either of those powders a decent option with 105-108 bullets in the BRA? Meaning are they at least usable with decent velocity and accuracy? Maybe not THE best, but hoping I can use them for all intended purposes. I do have a drop tube if need be.

Does anyone have any loads with N540 or H4350 in their BRA with 105-108s? And if so, what is accuracy/velocity like? Rifle has a 26" tube. What can I expect velocity wise with the 105-108s?

Thanks

 

[Jeff Porter]

Varget , H4895 , N150, N140 and even N135 work well for 105-108’s. Not seen a lot with your two powders but I am sure someone has been down this road.

 

[Bugs]

For a time, I shot 540 out of a straight 6mm BR. Don't recall the exact charge but I was pushing hybrids at right around 2900 FPS. I would think the same or perhaps a bit more should be doable with a BRA

 

[kyotekiller25]

Thank you.

Does anyone have GRT or Quickload that might be able to run some projections with N540 and H4350 with the 108 ELDMs?

 

[Trigger-Jerker]

Some info here that may be of help to you.

Thread 'A La Carte 6BRA at 600 yds'

Mar 9, 2025

She does pretty good - Now I just have to learn how to read wind. During one of the relays, the flags at 300 were pointing to each other - how do you deal with that?
That aside, this is a personal best for me with my first clean. This is with a fireforming load going pretty slow, 2760. Can't wait to turn it up.
Scott

• 64Rambler
• Replies: 12
• Forum: 6BR, 6BR Improved & Wildcats

• 

 

[JFrank]

Thank you.

Does anyone have GRT or Quickload that might be able to run some projections with N540 and H4350 with the 108 ELDMs?

Start with H4895 Varget N135 or N140

 

[kyotekiller25]

Start with H4895 Varget N135 or N140

I know those are the preferred and best powders, but like I said just trying to see if N540/H4350 will work, before I drop another $400+ on yet another keg of powder... The H4350 needs to be used inparticular. 15# sitting on the shelf doesn't do me any good for any other calibers I shoot or load for.

I have 1# of H4895 on the shelf. Has it been easier to get than the previous few years? Cause I know when I built my 223 2 years ago, H4895 was and had been like unicorn dust and non existent. That's why I went the N540 route for the 223 with the 75s...

 

[kyotekiller25]

Some info here that may be of help to you.

Thread 'A La Carte 6BRA at 600 yds'

Mar 9, 2025

She does pretty good - Now I just have to learn how to read wind. During one of the relays, the flags at 300 were pointing to each other - how do you deal with that?
That aside, this is a personal best for me with my first clean. This is with a fireforming load going pretty slow, 2760. Can't wait to turn it up.
Scott

• 64Rambler
• Replies: 12
• Forum: 6BR, 6BR Improved & Wildcats

• 

Looks like 30.5 of N540 might work around 2850fps. And maybe around 32g H4340 for around 2775-2800fps. That's not a bad start at all. They both had more than acceptable accuracy for what I'll be doing coyotes/PRS

 

[Owens85]

H4895 is pretty easy to get right now. I messed with h4350 in the bra and could get up around 2940 but you will have to use a drop tube and pour slow to do that.I was also using a hammer bullet that has less bearing surface then most other bullets so I had more case capacity .Accuracy was good with 4350 as well. Varget has been my go to lately haven't been able to get 4895 to tune up like in the past.

 

[kyotekiller25]

H4895 is pretty easy to get right now. I messed with h4350 in the bra and could get up around 2940 but you will have to use a drop tube and pour slow to do that.I was also using a hammer bullet that has less bearing surface then most other bullets so I had more case capacity .Accuracy was good with 4350 as well. Varget has been my go to lately haven't been able to get 4895 to tune up like in the past.

Around what charges were used with H4350 if you don't mind me asking? I have a long drop tube and don't mind pouring slow if that's what I have to do. I'd be more than happy with 2850-2900 fps from the 108s and small groups regardless of powder used.

 

[Owens85]

Around what charges were used with H4350 if you don't mind me asking? I have a long drop tube and don't mind pouring slow if that's what I have to do. I'd be more than happy with 2850-2900 fps from the 108s and small groups regardless of powder used.

I went back and looked in my target folders and actually got a bit more velocity then I remembered.I tested from 33.2 to 33.8 with 4350 velocities ranged from 2920 to 2960. But remember this was with a hammer a 108 Berger has a lot more bearing surface so case capacity will be less and pressure will build faster with that bullet.

 

[Owens85]

You shouldn't have any problem getting 2850 + with it though. When I tested it at 600 yards it shot around 2 inches for 4 shoots for all charges. I just never really put a lot of effort into that powder but I think it's very doable.

 

[Eric Leonard]

I went back and looked in my target folders and actually got a bit more velocity then I remembered.I tested from 33.2 to 33.8 with 4350 velocities ranged from 2920 to 2960. But remember this was with a hammer a 108 Berger has a lot more bearing surface so case capacity will be less and pressure with build faster with that bullet.

I have shot 33.3 H4350 with 105 vlds that shot pretty dang good.

 

[JEFFPPC]

My normal go to is Varget in the BR case. But with my first BRA version I have switched to H4895. I gain about760 fps over Varget with no pressure. With the Varget I was on the edge.

 

[DHuffman]

The H4350 will work fine. Crazy accurate in a 6 BR running 2740 & 2850
I'd start at 31 g and work up and see where you're gun likes it.

Don't overlook lower velocities trying to get to some speed you want to shoot.

 

[Lance21]

I've ran several thousand rounds of bra using h4350 and 107 smk. I don't remember the charge weight for certain, it was 32 +. Got best numbers and groups around 2800-2825.

 

[Mulligan]

The H4350 will work fine. Crazy accurate in a 6 BR running 2740 & 2850
I'd start at 31 g and work up and see where you're gun likes it.

Don't overlook lower velocities trying to get to some speed you want to shoot.

^^^^^this right here is worth the price of admission^^^^^^^

I have a buddy who has shot plenty of H4350 out of a straight 6BR with Berger 108's.
He soft seated the bullets with minimal neck tension. Won more than his share of fake wood with that combination. He started reading the internet and switched powders and bullets......... just chased rabbits for a few years after that. Leave the chrony at home and believe the target.

CW

 

[kyotekiller25]

So are the accuracy nodes around 2750 for the lower end and 2850 on the higher end then with 105-108s? Or around that general area? Does it really matter what powder is used to get those speeds for the accuracy nodes? I'd be happy with 2850fps on the higher accuracy node. 2750 is a little slower than I'd want to personally run. This doesn't have to be BR quality accurate since I won't be using it for BR matches. But I would like well under 1/2 MOA at around 2850fps for coyotes and PRS.

 

[JFrank]

So are the accuracy nodes around 2750 for the lower end and 2850 on the higher end then with 105-108s? Or around that general area? Does it really matter what powder is used to get those speeds for the accuracy nodes? I'd be happy with 2850fps on the higher accuracy node. 2750 is a little slower than I'd want to personally run. This doesn't have to be BR quality accurate since I won't be using it for BR matches. But I would like well under 1/2 MOA at around 2850fps for coyotes and PRS.

Br nodes in general are about 3% apart. Find one you can almost predict the rest.

 

[tlc2057]

Picking up a 6 BRA and was hoping I could use 2 powders that I have a bit of on the shelf from other rifles I shoot. I have 8# of N540 that I use in my 223 and 15# of H4350 that I use in my 6 Creed.

Are either of those powders a decent option with 105-108 bullets in the BRA? Meaning are they at least usable with decent velocity and accuracy? Maybe not THE best, but hoping I can use them for all intended purposes. I do have a drop tube if need be.

Does anyone have any loads with N540 or H4350 in their BRA with 105-108s? And if so, what is accuracy/velocity like? Rifle has a 26" tube. What can I expect velocity wise with the 105-108s?

Thanks

Not so sure I would worry about it. Shoot what you have and see how it works. I was in the same boat recently, had a 6 dasher barreled. I have plenty of Varget to try in it knowing Varget is the go to powder for the 6 dasher. Buttt I have 13 pounds of H4895 sitting on the self that has always been a good powder for me. So I loaded several recipes with new alpha brass. In less than 15 rounds I settled on 31.6 of H4895 seated at 1.800, 103 v tac bullet, cci450 primer. It shoots .181 @ 2860. Good enough for me! So try it you might like it