6BRA prefit barrel selection question

[2dogs]

Let's say I wanted to buy a Remage 6BRA prefit barrel, 1/14" twist, Remington Varmint Special contour, spiral fluted, and threaded for a muzzle brake. This will be a varmint/pest barrel so I would prefer a not turn neck and probably a zero freebore.

What are your recommendations?

 

[urbanrifleman]

I offer an 8 twist Remage Savage style contour varmint that I could ship in 6bra zero or 50 fb. Would just have to cut the muzzle threads.

I do not flute barrels. I have had customers that send them off for fluting.

That contour is for a shouldered barrel. Are you wanting a shouldered prefit?

 

[urbanrifleman]

If you didn't need muzzle threads I could ship today.

 

[2dogs]

Urbanrifleman, do you offer other twist rates for the 6BR?

I don’t want a shouldered profit, by Sendero contour I meant a not so heavy barrel. How close is the Savage varmint contour?

What barrel blanks do you use? What is the diameter your reamer cuts at the web of the case?

 

[urbanrifleman]

Urbanrifleman, do you offer other twist rates for the 6BR?

I don’t want a shouldered profit, by Sendero contour I meant a not so heavy barrel. How close is the Savage varmint contour?

What barrel blanks do you use? What is the diameter your reamer cuts at the web of the case?

8 twist is my standard in stock prefit. Honestly that is really all you need.

Savage varmint is a .86 inch taper from the nut. Wilson blanks.

My reamer is the Alex Wheeler 6bra with a 272 neck.

 

[PA Jeep]

I have found that fast twist - light bullet combos fail to deliver consistant performance. For example the 6BRA can likely drive a 62-68gr bullet 3500 plus fps. A 13.5 twist keeps the bullet below 200K rpms where the 8 twist is north of 300K. Life below 200K is much simpler to keep shooting small. Just my .02.

 

[urbanrifleman]

I have found that fast twist - light bullet combos fail to deliver consistant performance. For example the 6BRA can likely drive a 62-68gr bullet 3500 plus fps. A 13.5 twist keeps the bullet below 200K rpms where the 8 twist is north of 300K. Life below 200K is much simpler to keep shooting small. Just my .02.

The Berger 80 flatback absolutely SMOKES in an 8 twist. In fact, it is really all you need to shoot if you are under 400 yards. Many of the big boy 6bra benchrest shooters were going to the 80 grain bullet in short range specifically because it can buck the wind at 200.

For the average guy buying a $249 prefit, you could not shoot much smaller than a Berger 80 in an 8 twist. Heck, I have even shot them in 600 yards matches and they will shoot 1" of vertical at 600. The 80 Sierra Blitz is also quite good as is the 88 Berger, 85 HPBT, 87 ELDM, etc etc

There is an entire thread from @AckleymanII shooting my barrel in 6bra and 70 grain bullets. His review was that it was pretty boringly accurate and very fun to shoot. Not finicky.

The great thing about an 8 twsit is that if you want you would also try heavier bullets, where with the slow twist you are married to a very small range of bullets.

 

[Mark W]

I have found that fast twist - light bullet combos fail to deliver consistant performance. For example the 6BRA can likely drive a 62-68gr bullet 3500 plus fps. A 13.5 twist keeps the bullet below 200K rpms where the 8 twist is north of 300K. Life below 200K is much simpler to keep shooting small. Just my .02.

Ive also always found much more success using bullet, twist, and freebore combos that match.

 

[foxguy]

The Berger 80 flatback absolutely SMOKES in an 8 twist. In fact, it is really all you need to shoot if you are under 400 yards. Many of the big boy 6bra benchrest shooters were going to the 80 grain bullet in short range specifically because it can buck the wind at 200.

For the average guy buying a $249 prefit, you could not shoot much smaller than a Berger 80 in an 8 twist. Heck, I have even shot them in 600 yards matches and they will shoot 1" of vertical at 600. The 80 Sierra Blitz is also quite good as is the 88 Berger, 85 HPBT, 87 ELDM, etc etc

There is an entire thread from @AckleymanII shooting my barrel in 6bra and 70 grain bullets. His review was that it was pretty boringly accurate and very fun to shoot. Not finicky.

The great thing about an 8 twsit is that if you want you would also try heavier bullets, where with the slow twist you are married to a very small range of bullets..Urbanrifleman,

Do you know what powder and approximate Charge they have been using with the 80 grain bullets?
I would like to try some 80 grainers in my 6MM BRA-

I have 8208, H4895 and Varget Powders available to try.

Thanks

 

[urbanrifleman]

Do you know what powder and approximate Charge they have been using with the 80 grain bullets?
I would like to try some 80 grainers in my 6MM BRA-

I have 8208, H4895 and Varget Powders available to try.

Thanks

8208 is money with the 80 Berger. I also love R10x, and Lt32.

Work up from 30. Should be 31.5ish?

 

[urbanrifleman]

Do you know what powder and approximate Charge they have been using with the 80 grain bullets?
I would like to try some 80 grainers in my 6MM BRA-

I have 8208, H4895 and Varget Powders available to try.

Thanks

I checked my data 31.5 ish is correct.

 

[PA Jeep]

The Berger 80 flatback absolutely SMOKES in an 8 twist. In fact, it is really all you need to shoot if you are under 400 yards. Many of the big boy 6bra benchrest shooters were going to the 80 grain bullet in short range specifically because it can buck the wind at 200.

Not seeing very many using 80 gr bullets or BRA's at 200, (6 Grinch, maybe) however if they are used I would bet on a 12 twist not an 8. I'm far from an interior/exterior ballistic expert however for my dollar I'm using what is proven to work at registered matches. Good shooting to yah.

 

[urbanrifleman]

Urbanrifleman, do you offer other twist rates for the 6BR?

I don’t want a shouldered profit, by Sendero contour I meant a not so heavy barrel. How close is the Savage varmint contour?

What barrel blanks do you use? What is the diameter your reamer cuts at the web of the case?

 

[AckleymanII]

Take a look at the dia at the .200 mark, that is why I never got clickers when shooting all those loads I posted, good design! One heck of a good reamer.

 

[2dogs]

Take a look at the dia at the .200 mark, that is why I never got clickers when shooting all those loads I posted, good design! One heck of a good reamer.

What I have is way tighter than that...

 

[AckleymanII]

On one 6 BR barrel I have, it is Tight in the web(.470), and the barrel is 15 years old, Lilja 12 T 6 BR. I had to experiment with a series of Body sizers, and finally a small base sizer to remove the clickers.

Now we have Harrell dies...what a Blessing!

 

[urbanrifleman]

On one 6 BR barrel I have, it is Tight in the web(.470), and the barrel is 15 years old, Lilja 12 T 6 BR. I had to experiment with a series of Body sizers, and finally a small base sizer to remove the clickers.

Now we have Harrell dies...what a Blessing!

My LE Wilson die that I sell matches my print.

 

[urbanrifleman]

What I have is way tighter than that...

This the Alex Wheeler spec 6bra with a 272 neck, made for Lapua brass and a Harrell's #3 die (or the new LE Wilson).

I am not sure why going smaller would be good. I have Lapua brass with 20 loads on it.

 

[AckleymanII]

I think he is stating that he has a problem or chases problems with a .470.

Urban, is the Wilson a screw in press type die, many do not know they even exist!

 

[newbieshooter]

Full Length Sizing Die | L.E. Wilson Inc.

LE WILSON 6BR ACKLEY Full Length Sizing BUSHING Die-FREE SHIP

LE WILSON 6BR ACKLEY Full Length Sizing Die - Interchangeable Bushing

theurbanriflemanstore.com