6 BRX Favorite Loads

[nfa1eab]

How about starting a sticky thread for 6 BRX? There seems to be plenty of interest in the cartridge these days. I understand it is ballistically similar to a Dasher, but it may be helpful for people building new rifles or just looking for a better load.

My rifle:
Remington 700, 6 BRX, .104' free bore, .271' neck, trued action, Gretan bushed bolt, firing pin,.062')
Pacnor Barrel 4 groove, .236 bore, 1-8' twist, 31'

Fire form Load -,False shoulder used by necking up to .257')
107 Sierra,moly), 30.5 gr. Varget, Remington 7.5 primer, 2,800 fps
Forms cases perfectly, have not lost one yet after 300 formings.

Match Loads
105 Berger VLD,Target),moly), 33.6 gr. Rel-15, Fed 205M, 3,035 fps, ES - 12, SD - 5

105 Berger VLD,Target),moly), 33.5 gr. VV N140, Fed 205M, 3,022 fps, ES - 11, SD - 5

Lapua brass for all loads. No primer issues, ejector marks or hard bolt lifts.These loads go where you point them. Unfortunately they shoot better prone than my capabilities at this point, but I am working on the nut behind the trigger.

Ed

BTT

 

[MarkS]

nfa1eab,

My current load is 108 Berger's 33.0 Varget Fed 205 2975 f/s. ES 9 .

My new 6BRX 14 twist load is 68 Berger and 70gr Sierria Blitzking with fed 205 and 68 clicks on my Harrel, I have now weight it yet) N135, this load is hot so back off before tring it.

Mark Schronce

 

[Bob3700]

The following are my best match loads so far.

Rifle is 40X Rem, trued action with .062 firing pin. Chambered with PTG BRX reamer w/.272 neck & .104 freebore. Bartline 5C bbl with 8 twist 30 inches long.

Match Loads With Lapua Brass
105 Berger VLD,Target),moly), 33.6 gr. Rel-15, Russian Small Rifle Magnum, 3,025 fps, ES - 12, SD - 5 Seated +.020' into lands.

107 SMK,moly), 33.2 gr. Varget, Russian Small Rifle Magnum, 2975 fps, ES - 9, SD 0 - 2 Seated +.020' into lands.

Bob

 

[STP]

Savage AccuTrigger SA
Shilen 1-8 twist 24inch
Leupold Vari-X III 8.5-25X/Tasco WC 36X44mm
CCI Br4
SMK 107gr coated with Tungsten Disulfide,Ms2)
Lapua brass
Chrono 2900fps

I`m extremely pleased with it:thumb:

 

[Thorbird]

Savage 2 Screw Target Action
Rifle Basix 2 Trigger
Kreiger 28' 8 Twist
B&C Medalist Tactical
32.5 Varget 108BT .010 off lands, Wolf SRM

 

[Erik Cortina]

6BRX
Remington 700
24' Shilen barrel
1:8' twist

PT&G reamer
.272' neck
.095 freebore

Fireforming load:
87 grain Vmax
32 gr. N140
.020 in the lands
3040 fps
.500' @ 100 yards

Match load:
105 Berger VLD
35.4 gr. H4350
.020 off lands
2898 fps.
.500' @ 300 yards

*Work up to these loads

-X3M

 

[Hanbleceya]

How about starting a sticky thread for 6 BRX? There seems to be plenty of interest in the cartridge these days. I understand it is ballistically similar to a Dasher, but it may be helpful for people building new rifles or just looking for a better load.

My rifle:
Remington 700, 6 BRX, .104' free bore, .271' neck, trued action, Gretan bushed bolt, firing pin,.062')
Pacnor Barrel 4 groove, .236 bore, 1-8' twist, 31'

Fire form Load -,False shoulder used by necking up to .257')
107 Sierra,moly), 30.5 gr. Varget, Remington 7.5 primer, 2,800 fps
Forms cases perfectly, have not lost one yet after 300 formings.

Match Loads
105 Berger VLD,Target),moly), 33.6 gr. Rel-15, Fed 205M, 3,035 fps, ES - 12, SD - 5

105 Berger VLD,Target),moly), 33.5 gr. VV N140, Fed 205M, 3,022 fps, ES - 11, SD - 5

Lapua brass for all loads. No primer issues, ejector marks or hard bolt lifts.These loads go where you point them. Unfortunately they shoot better prone than my capabilities at this point, but I am working on the nut behind the trigger.

Ed

BTT

And if you already have a 6br, tooling costs are minimize. I am lucky enough to have a friend with a burned out BRX so will be using to fireform.

Wondering what made you decide to use false shoulder method?

 

[swd]

Nesika J, 6BRX, .140free bore. 27" Krieger 4 groove. 107SMK seated to square marks on the bullet, 35.4gr RL16, 450 primers. 3020fps in my rifle and well below max. Several rifles shoot the same load extremely well in F.

An old thread but great information

 

[jr600yd]

Remmy 700, bushed bolt, 30" Krieger 1/8 104 free bore 272 neck
107 SMK Molly, 105 Berger Hybrid Molly, on top of 33.6 grs Varget, Lapua case, lit off by CCI 450 primer. 3,025 fps

 

[22DASHER]

Zombie!!!

 

[JEFFPPC]

I have been shooting a pair of 6 BRX's for 7 yrs and have won from 100 yds to 1000 yds. with them. I have shot Bartlin,Kriger,Shilen, and Douglas barrels and won with all of them. I have Bob Green tuners on them and would not be without them. The only bullet I shoot is the EPS 106. Most consistent bullets I ever used. Depending on the individual barrel I have shot from 32.7 to 34.0 gr of Varget. I use only CCI BR4 primers. I shoot 1500 to 2000 rounds out of each every yr and replace barrels yearly except for one Bartline I shot for 2 yrs, over 4000 rounds and won the last match I shot with it. The second yr with that barrel I would retune with the tuner every other match.The barrels have all been 8 twist except for the Douglas which was a 7.5 twist, it never would give me the groups all the 8 twists would. You will enjoy your BRX.

 

[comagutsa]

Stolle panda f class dual port. Kreiger HV 30" 1:7.5 twist barrel.236 .110 FB .270 neck turn brass for 267 loaded round CCI 450. 105gr hybrids with 32.4gr of varget/2208 at 3000fps ES 5fps SD 2.6 .After 1200 rounds i had to up charge to bring it back into tune 32.9gr at 2980fps ES 4 SD 1.6 . At sea level
Stopped shooting it then as playing with 6BRA atm.

 

[KenOath]

Stolle panda f class dual port. Kreiger HV 30" 1:7.5 twist barrel.236 .110 FB .270 neck turn brass for 267 loaded round CCI 450. 105gr hybrids with 32.4gr of varget/2208 at 3000fps ES 5fps SD 2.6 .After 1200 rounds i had to up charge to bring it back into tune 32.9gr at 2980fps ES 4 SD 1.6 . At sea level
Stopped shooting it then as playing with 6BRA atm.

I can attest to this load/combo... it whooped my butt once!

 

[comagutsa]

I can attest to this load/combo... it whooped my butt once!

hahaha it did alright haha

 

[DJSBRS]

Be very careful gentlemen. There are two versions of 6 BRX used. One is the 6 BRX Crone which is listed on this website cartridge information on the main page. The other is the 6 BRX Whitley version which most of you have. There is a difference of approximately .027 in case volume length. Check the length difference at the datum line.

Sharing data on a 2 version case can be harmful.

Which version do you really have?

DJ
DJ's Brass Service

 

[Judd]

Great point...another point worth mentioning is freebore definitely effects charge weights and consequently the pressure. Shorter freebore won't be able to shoot the longer freebore charges without hitting pressure.

 

[nfa1eab]

Answering a couple of questions

My reamer from PTG
Bolt face to shoulder measures 1.197" - longer than Whitley reamer.

False shoulder fire forming rationale
I believe that neck tension on a jammed bullet is not sufficient to prevent a strong firing pin from moving the case forward in the chamber. This causes the case to stretch down near the web. Not conducive to long case life. The false shoulder, higher neck tension, and bullet jam together, ensure the case blows forward at the shoulder as intended. My $.02.

 

[Jerry S]

I know I know zombie thread. I’m building my first 6brx and was wondering if anyone is using H4350 with any success?
I have 24lbs of it and was going to try it. I’ll get some Varget if its not worth fooling with.

 

[swd]

I know I know zombie thread. I’m building my first 6brx and was wondering if anyone is using H4350 with any success?
I have 24lbs of it and was going to try it. I’ll get some Varget if its not worth fooling with.

It'll work with 105+ weight bullets. It's about as slow as you can use in the BRX.

 

[Loggins J]

Be very careful gentlemen. There are two versions of 6 BRX used. One is the 6 BRX Crone which is listed on this website cartridge information on the main page. The other is the 6 BRX Whitley version which most of you have. There is a difference of approximately .027 in case volume length. Check the length difference at the datum line.

Sharing data on a 2 version case can be harmful.

Which version do you really have?

DJ
DJ's Brass Service

Yes be careful dj is right