6BRA load data

[urbanrifleman]

What you'll find is the faster you go the sharper the nodes get. The less forgiving they are of your loading mistakes, oversights and weather changes. In my limited experience, life above 3k fps is not nearly as consistent as life below it. Others experiences may vary, but that was mine.

Thank you. That seems to be what I saw. Essentially my 6bra will shoot the node my fast 6br shot as fast as it would go, and do it without even breathing hard

 

[johara1]

Speed depends on the barrel also, one Lederer shoots good at 2970-80 the same load shoot at 2998 out of the other Lederer. It is just faster both shoot small.... jim

 

[Nick_Mansfield]

Ttt

 

[dgeesaman]

Ok well I got 2875 with 29.9 grains of AR Comp, 2950 with 30.6, and 3025 with 31.4. Never hit pressure.

I don't think that's too fast a powder or pressuring out. Not even a little bit for a 108 Berger. Chamber is Alex Wheeler with 272 neck. Lapua gold box brass

Interesting. I loosen primer pockets at 30.5 with AR-Comp and barely reached 2950. I start deforming primers and making extractor marks around 30.3. Lapua blue box, BR-4, Berger 108s, Wheeler w .271 neck turned to .268.

 

[Hrsmn51]

My barrel is being chambered this week. Whose resize die would you recommend? Am I right I can use my BR seating die?
Thanks
H

 

[Dave Way]

My barrel is being chambered this week. Whose resize die would you recommend? Am I right I can use my BR seating die?
Thanks
H

I've had lots of success with the Harrells size dies. You can send a couple fired cases and he will fix you up. I hope it shoots great for you! Its a really cool little cartridge.

Dave.

 

[Hrsmn51]

Thanks Dave! I have seen others recommend Harrells.
H

 

[Eric Leonard]

Thanks Dave! I have seen others recommend Harrells.
H

I wound up using a 6 Dasher seater die, as they have the same 40 degree shoulder

 

[Hrsmn51]

Thanks! Not sure which seater yet, may end up with a Harrells.
Thanks for your input.
H

 

[Gabe22BR]

Here’s my bra seater die.
.080 off a Dasher die

 

[BartsBullets]

View attachment 1136954 Here’s my bra seater die.
.080 off a Dasher die

That’s Pretty!!!

 

[Mulligan]

That’s Pretty!!!

Kind of amazing really.
I barely find time to load for the next match.
CW

 

[KenOath]

View attachment 1136954 Here’s my bra seater die.
.080 off a Dasher die

Literally a mirror finish ! Nice..

 

[Gabe22BR]

Thanks guys.
Winter has set in...

My slow lot load:
31.12gr H4895
205M primer
Bart’s-105

 

[KS6mm]

How fast are you guys able to push a 107 smk in a 26-28 inch .237 5R bartlein with h4895 and 450s?

 

[Northridge]

How fast are you guys able to push a 107 smk in a 26-28 inch .237 5R bartlein with h4895 and 450s?

really depends but my testing the 107 usually they will make as much or more velocity than other bullets in the 103-108 class..

Shawn Williams

 

[KS6mm]

I’m not super concerned with speed, but at times it would be nice to go up to the higher node. from my testing my with barrel and powder, I haven’t been able to break 2920 in 80 degree weather or warmer without heavy bolt lift, some flattening of primers, and heavy ejector marks. I’ve got a 27 inch barrel on an impact action. Only bumping shoulders .002

 

[JohnMill]

I wound up using a 6 Dasher seater die, as they have the same 40 degree shoulder

Thanks Mr.,do you cut it down?
JohnMill

 

[Chuckhunter]

Thanks Mr.,do you cut it down?
JohnMill

John, I also used my dasher seater and it works fine. Just ran the seating stem in a bit further. Also used my Harrell Dasher FL bushing sizer but that had to be cut down approx., .080

 

[shotdown]

6BRA Fireforming load:
CCI400
Nosler 105 RDF
29.6 gr H4895 @ .010 off lands
2832 fps / 28” Proof barrel
3.6 SD / 8 ES