BRX loads non moly

[blowemup]

So i have searched this site a great deal & most loads i seem to find for the BRX are using moly...

I have just had two rifles chambered in 6BRX ( 1-8 Krieger & 1-7.75 Bartlein both at 28inches ) & am in the process of fire forming new blue box brass with 30gr of varget with Hornady 105gr.

I plan to run the 105 to 107 VLD type projectiles for 500mtr comps here so any data would be appreciated.

Is the Dasher data in this sub-forum interchangeable with the BRX ?

Kind regards

 

[DJSBRS]

So i have searched this site a great deal & most loads i seem to find for the BRX are using moly...

I have just had two rifles chambered in 6BRX ( 1-8 Krieger & 1-7.75 Bartlein both at 28inches ) & am in the process of fire forming new blue box brass with 30gr of varget with Hornady 105gr.

I plan to run the 105 to 107 VLD type projectiles for 500mtr comps here so any data would be appreciated.

Is the Dasher data in this sub-forum interchangeable with the BRX ?

Kind regards

Depends on which version BRX you have, The "Crone" version mirrors the Dasher capacity. The "Whitley" version capacity is less due to the case body being .028 shorter.

I would start at 31.5 grains of Varget and go from there with the moly 105 Hornady bullets.

DJ

DJ's Brass Service
205-461-4680

 

[swd]

I fire form mine with 30.5 Varget, 107 SMK jammed .050" with a Winchester primer and the ejector removed. They hold excellent vertical at 600. Go shoot a match while you fire form.

 

[davek]

Depends on which version BRX you have, The "Crone" version mirrors the Dasher capacity. The "Whitley" version capacity is less due to the case body being .028 shorter.

I would start at 31.5 grains of Varget and go from there with the moly 105 Hornady bullets.

DJ

DJ's Brass Service
205-461-4

I fire form mine with 30.5 Varget, 107 SMK jammed .050" with a Winchester primer and the ejector removed. They hold excellent vertical at 600. Go shoot a match while you fire form.

I use 31.5g of varget with the 105 to 108g bullets for nmc , and i fire form with 30.0g of varget with a false shoulder in the case, davek,

 

[Grimstod]

Run at least 3 to 4 reloads of a light charge. That will harden up the pockets in your brass. I start with 68gr bullets topped with BR 30gr. It will be an accurate load and will form your brass gently. Do this and your brass will last hundreds of reloads.

 

[tclaunch]

Here is a blast from the past...Lol. 32.4 gr Varget and 105 VLD Target Berger 105.

http://bulletin.accurateshooter.com...-averages-1-677-for-six-targets-at-600-yards/

http://bulletin.accurateshooter.com/2012/03/wow-claunch-shoots-0-156-moa-0-981-group-at-600-yards/

 

[nfa1eab]

I would recommend fireforming with the 105 bullets. I tried 70gr. bullets and got 90% formed (rounded shoulders). 105s gave nice sharp shoulders. I don't know about hundreds of reloads on a case. Shooting BRX velocities I get about 10 loadings before primers start to loosen to where I am not comfortable. Maybe if you stay below 2,900 fps they may last longer, but, then whats the point of shooting the BRX? The straight 6BR will do that, without having to form cases. If there is a way to tighten loose primer pockets, I would like to know what it is, along with many others. Can't help on loads as I shoot moly'd bullets.

 

[skiutah02]

My way. But not only way.

 

[JEFFPPC]

I have over 12,000 rounds out of 2 BRX's over the last 5 yrs. I have never used bullets that are coated in them or in my PPC's. I shoot EPS 106 gr. Have had good success from 100 to 1000 yds. Most barrels have been Bartline or Kreiger. Have a Shilen on one gun right now that I shot all last yr. at 32.7 gr. Varget. Other than that I have always been between 33.5 and 33.9 gr. Varget. Took a Bartline off last yr. that had almost 4000 rounds thru it. About once a month I would need to retune it using the Bob Green tuner I have on all my Bench guns. I have tried other powders but always come back to Varget. I do not think the perfect BRX/Dasher powder is out there yet. Varget and 4350 both a bit slow. RL 15 and 4895 a bit fast, but until something better comes along I will stick with Varget.

 

[saunaking]

My way. But not only way.

As long as you do that nice of a job, you might as well come over to the dark side and start shooting with us Drew!

I shoot another 6BR improved version now, but Drew's version works well, with slight variations on the powder charge. If you have a tight neck chamber, some will turn the neck to create the false shoulder prior to the first firing.

 

[Judd]

Freebore will control how much powder and where your sweet spot will be...I have been running 32.6 Varget w/ a .104 freebore shooting 105 hybrids.

I do what skiutah does but I turn the 6br neck prior to the false shoulder all the way down to the old 6br shoulder....I'm not turning much and if the brass is really good I might not even turn it. I'm looking for a clean up not a full turn for a tight neck. Only thing I'll add is the sizing down to 6mm from .257 you want it to only size what can fit in the chamber, that is sort of like a jam and helping the case stay right where you want it during your fireforming. Also, the fireforming can turn out to be very accurate. Our matches are only 52 rounds and a lot of times I'll take 48 to the range and see if I can tune it and if it will shoot well I'll fireform the rest in a match.

 

[skiutah02]

As long as you do that nice of a job, you might as well come over to the dark side and start shooting with us Drew!

Never say never....

 

[saunaking]

How is that mini working for you?

 

[skiutah02]

Awesome, so far, but only had it out a few times. I'll be giving it a shake down at MRC on Sun if you want to give it a whirl. You going to BSWN?

 

[comagutsa]

here is a pic of my load testing with 105gr hybrids and 2208/varget at 300m



as you can see i have 2 nodes 32.3gr to 32.5gr and 33.5gr to 33.7gr (i did rush the last shot which hit low)
these were all tested with .010 jump,
since then i have used 32.4gr but i still haven't had time to test seating depth and have been getting 4 round groups at 500m of 1.3 inches but the wind and mirage and myself has stuffed my 5th shot, but even with 5th they are still around 2 inches

 

[comagutsa]

I just ran 30gr with the 105gr hybrid at .030 jam with .005 neck tension when FF and didn't lose any. I also run a .270 neck so i trimmed my brass to a loaded rounds of .267 and use .003 neck tension on my loads now , come out good

 

[blowemup]

Appreciate all the info.

Will post a few pics of the results.

 

[fm1947]

Never say never....

Looks like a lot of cant on that scope, how much cant, what kind of competition you shoot that in, Nice rig

 

[skiutah02]

Looks like a lot of cant on that scope, how much cant, what kind of competition you shoot that in, Nice rig

I normally shoot FTR (223 and 308) from 300 to 1000yds. This rifle had a 223 barrel on it before I put the 6brx on it, so this one will be for fun in Open.

The 30MOA base is a bit too much as the scope is nearly mechanically bottomed out with a 300 yd zero, but should be able to dial in 1600yds+ on the scope which would be fun to try.

Drew

 

[JohnMill]

I would recommend fireforming with the 105 bullets. I tried 70gr. bullets and got 90% formed (rounded shoulders). 105s gave nice sharp shoulders. I don't know about hundreds of reloads on a case. Shooting BRX velocities I get about 10 loadings before primers start to loosen to where I am not comfortable. Maybe if you stay below 2,900 fps they may last longer, but, then whats the point of shooting the BRX? The straight 6BR will do that, without having to form cases. If there is a way to tighten loose primer pockets, I would like to know what it is, along with many others. Can't help on loads as I shoot moly'd bullets.

Just saw this. If you still want to tighten primer pockets got to Hart accuracy and they have 2 piece device that does. You need an anvil with it. We got a 6lb one from Amazon. Hart makes them for lr and sr 1 ea