6mm BR

[702lineman]

Need to look into the satterlee method of load development. Only way to go. Used it on 3 guns and will never use any other method again. Too fast and too easy

 

[Doc68]

So I settled on the 29.5gr of N540 powder over a 105gr Berger hybrid. Over a 20rd average it was 2831fps. SD of 7 and ES of 24. 8.1 mil of elevation to 1085yds and holding 1.7 mils for wind.

 

[47guy]

So I settled on the 29.5gr of N540 powder over a 105gr Berger hybrid. Over a 20rd average it was 2831fps. SD of 7 and ES of 24. 8.1 mil of elevation to 1085yds and holding 1.7 miles for wind.

1.7 miles....that’s a hurricane force wind lol.

 

[alcap]

I'd like to know what it gets you. That is likely the direction I will go on my next one.

Well just for the heck of it I shot it over the chrono with just 25 rounds on the barrel. 105 hybrid, 30.0 RL-15, Fed 205M, Peterson brass got me 2860 fps over 15 rds. Sd wasn't great at 14 but I think switching to CCI 450's will help with that.

 

[Doc68]

Well just for the heck of it I shot it over the chrono with just 25 rounds on the barrel. 105 hybrid, 30.0 RL-15, Fed 205M, Peterson brass got me 2860 fps over 15 rds. Sd wasn't great at 14 but I think switching to CCI 450's will help with that.

I have to agree on the 450s. My SD was in that 16-18 range with federal match primers and dropped to 7 with the 450s.

 

[Raufoss]

For the 6BR is 2850/2900 fps with 105’s is doable with a 27 inch barrel of it’s asking too much?

Anyone have data on the 110 Atips?

 

[Krob95]

For the 6BR is 2850/2900 fps with 105’s is doable with a 27 inch barrel of it’s asking too much?

Anyone have data on the 110 Atips?

Yes as thats what I’m running with mine with 105’s and varget through a 27” kreiger barrel

 

[Krob95]

I have to agree on the 450s. My SD was in that 16-18 range with federal match primers and dropped to 7 with the 450s.

You really had that high of an SD with the 205m primers?? I had quite the opposite. I had a sd of 2.9fps with the 205m’s and with BR4’s I had a sd of 4.

 

[Doc68]

I thought it was weird also. But that's what my magneto speed was reading.

 

[Tx_Aggie]

@Doc68 How does that RPR feed and eject the 6mmBR cases?

 

[Doc68]

It feeds really well. Zero issues. I have the MDT 12rd mags and I haven't had any feeding issues. 1 out of maybe 30 will not eject properly. But it's only happened twice now.

 

[alcap]

Are ejection issues common with 6BR? If so, what can be done about it?

 

[Tx_Aggie]

It feeds really well. Zero issues. I have the MDT 12rd mags and I haven't had any feeding issues. 1 out of maybe 30 will not eject properly. But it's only happened twice now.

Awesome, thanks!

 

[702lineman]

Are ejection issues common with 6BR? If so, what can be done about it?

Don't run the bolt like a pussy!!

 

[ifgator]

Don't run the bolt like a pussy!!

Though to the uninitiated one might see this as a harsh response. My first custom action was a Defiance Devient tac. At first I was nervous that it would Jack up my round if it didn't feed right and so I ran the bolt like a pussy. However, when I learned the error of my ways and if you run the bolt with full commitment....... It was as though it was a completely different action. So smooth. Fed perfectly. So avoid my learning curve and drive that bitch like ya stole it!!!!

 

[alcap]

LOL. I'll try to remember that!

 

[blbennett1288]

For the 6BR is 2850/2900 fps with 105’s is doable with a 27 inch barrel of it’s asking too much?

Anyone have data on the 110 Atips?

26" Bartlien 5R 1-8 w/ Berger 105gr HT, CCI BR4's, and 30.4grs of Varget gets me 2895fps

 

[Doc68]

I wish I could find varget.

 

[blbennett1288]

I wish I could find varget.

Its out there, it took me about a month, but within a week I was able to get 26lbs and that was only due to purchase restrictions.

Find 4-5 websites that stock Varget and show "in stock" figures. Check them 3 times a day (breakfast/lunch/dinner) and you will find Varget easier than you think.

 

[Raufoss]

Yes as thats what I’m running with mine with 105’s and varget through a 27” kreiger barrel

26" Bartlien 5R 1-8 w/ Berger 105gr HT, CCI BR4's, and 30.4grs of Varget gets me 2895fps

At those speed how many reload are you guys getting?

 

[Krob95]

At those speed how many reload are you guys getting?

I’m on my 5th firing currently

 

[blbennett1288]

At those speed how many reload are you guys getting?

I am on my 3rd firing

 

[bgavin]

Ordered a barrel, berger hybrid 105's, and lapua brass.

Need to order dies and bushings. What's everyone liking?

I really like the rcbs seater dies with the window. I also have le wilson fl bushing dies for 6.5 creed and valkyrie. Thinking of going that route again.

What size neck bushings should I order with lapua brass and 105 hybrids?

Thanks

 

[Olen_4504]

Ordered a barrel, berger hybrid 105's, and lapua brass.

Need to order dies and bushings. What's everyone liking?

I really like the rcbs seater dies with the window. I also have le wilson fl bushing dies for 6.5 creed and valkyrie. Thinking of going that route again.

What size neck bushings should I order with lapua brass and 105 hybrids?

Thanks

i recommend getting harrels fl bushing sizing die. you shoot 3 rounds and send them your brass. they send you a die that closest matches your chamber. and they are only $80.

i use a .265 (some use .264) bushing to oversize the necks, then run them back over a mandrel to set final neck tension.

i use the rcbs match master die for my .223 and it is really nice.

however i stick with my forster micrometer for seating on my 6br

 

[bgavin]

i recommend getting harrels fl bushing sizing die. you shoot 3 rounds and send them your brass. they send you a die that closest matches your chamber. and they are only $80.

i use a .265 (some use .264) bushing to oversize the necks, then run them back over a mandrel to set final neck tension.

i use the rcbs match master die for my .223 and it is really nice.

however i stick with my forster micrometer for seating on my 6br

I'll take a look at the harrels fl die.

Thanks

 

[Doc68]

Ordered a barrel, berger hybrid 105's, and lapua brass.

Need to order dies and bushings. What's everyone liking?

I really like the rcbs seater dies with the window. I also have le wilson fl bushing dies for 6.5 creed and valkyrie. Thinking of going that route again.

What size neck bushings should I order with lapua brass and 105 hybrids?

Thanks

Those are the dies I have, just non bushing dies. It has the micrometer seating die. I did have to take a bullet and 600grit sandpaper to the seating stem because it was leaving a ring around the tip of the bullet. I use the berger hybrid 105s.

 

[47guy]

Ordered a barrel, berger hybrid 105's, and lapua brass.

Need to order dies and bushings. What's everyone liking?

I really like the rcbs seater dies with the window. I also have le wilson fl bushing dies for 6.5 creed and valkyrie. Thinking of going that route again.

What size neck bushings should I order with lapua brass and 105 hybrids?

Thanks

.266...if your going to run a mandrel go .265

 

[Doc68]

MDT 12rd 6BR mags

 

[Shootnstraight]

Is this for sale?

 

[Doc68]

Is this for sale?

No. Just posting for anyone who wonders what the MDT mags look like.

 

[steve123]

At those speed how many reload are you guys getting?

I'm on my 7th. The bolt is getting sticky on some cases though so I might need to by a small base die.

 

[memilanuk]

I might need to by a small base die.

Let me know when you find a place that makes 'em...

 

[47guy]

Let me know when you find a place that makes 'em...

small base 308 die.

 

[memilanuk]

small base 308 die.

Close, but not quite the same.

The ring die I have has zero chamfer at the base, and sizes *all* the way down the case web as far as it can get to the shell holder, whereas a SB die squeezes a *little* smaller, and has less radius/chamfer at the base than a regular F/L die... but it physically cannot size as far down the case web as a true ring die, both because of the chamfer/radius, and because you have to be conscious of not pushing the shoulder back too far.

I need (well, 'want' would probably be more accurate) a ring die or two in other case head sizes to go with the one I have. That one was custom made, but the guy has gone radio-silent since then. PVA was supposed to be making something similar that they called a 'small base' die that used bushings... but they don't even have it on their web site anymore.

Like I said, let me know when you find someone who makes a ring die. I'm interested.

 

[BrienM]

Most people that have used them likes the Harrels precision die. Fire 3 cases 3 times and send them to him. He has a couple different sizes of dies and finishes them to match your chamber.

 

[47guy]

Close, but not quite the same.

The ring die I have has zero chamfer at the base, and sizes *all* the way down the case web as far as it can get to the shell holder, whereas a SB die squeezes a *little* smaller, and has less radius/chamfer at the base than a regular F/L die... but it physically cannot size as far down the case web as a true ring die, both because of the chamfer/radius, and because you have to be conscious of not pushing the shoulder back too far.

I need (well, 'want' would probably be more accurate) a ring die or two in other case head sizes to go with the one I have. That one was custom made, but the guy has gone radio-silent since then. PVA was supposed to be making something similar that they called a 'small base' die that used bushings... but they don't even have it on their web site anymore.

Like I said, let me know when you find someone who makes a ring die. I'm interested.

whats strange is that your having issues with a BR I shot a few barrel and never had any sizing issues.

Go Big Tactical

store12936086.ecwid.com

 

[memilanuk]

Never said I needed them for a BR

Weird... I went to that page yesterday and earlier today; got a 404 error both times. Emailed them about the dies, said they were on indefinite backorder.

 

[delfuego]

What size neck bushings should I order with lapua brass and 105 hybrids?

It will depend on your reamer and if you want to turn necks.

 

[bgavin]

It will depend on your reamer and if you want to turn necks.

Not sore on reamer and no mention of neck turning.

Called bugholes and told them I wanted a
6br and I wanted to use lapua brass and 105 hybrids.
Will give them a call and see what they say.
Thanks

 

[47guy]

Not sore on reamer and no mention of neck turning.

Called bugholes and told them I wanted a
6br and I wanted to use lapua brass and 105 hybrids.
Will give them a call and see what they say.
Thanks

if your ordering a prefit its not(i should say i doubt)going to be a tight chamber.

 

[BigdaddyWSM]

My 6br load is slow compared to everyone else but went with accuracy & components I have on hand.
H4895 - 28.4 grains=2813 ES of 9
Fed205M primers
Lapua brass
105 hybrid loaded .040 off lands ( wanted boat tail near shoulder/ neck junction)
Also wanted to mention, you guys having carbon issues, did you see where Eric Cortina said he uses CLR to clean carbon from his barrels? CLR is a household cleaner I also use to clean my screens & sprayer nozzles on my herbicide applicator when storing for winter. Calcium, lime, rust. Is what it stands for.

 

[bgavin]

I use CLR to clean the bore in my other rifles. Not every cleaning but will with this barrel b/c I’ll be using Varget.

 

[grizzaws]

1# canisters of H4895 are in stock at Powder Valley. I just watched the 8# go out of stock so you’d better hustle.

 

[47guy]

I use CLR to clean the bore in my other rifles. Not every cleaning but will with this barrel b/c I’ll be using Varget.

Have you had issues with varget?

 

[bgavin]

No but have read it is prone to carbon rings.

 

[keystoneshooter]

1# canisters of H4895 are in stock at Powder Valley. I just watched the 8# go out of stock so you’d better hustle.

Thanks for the heads up, ordered some 5 minutes after you posted!

 

[BigdaddyWSM]

My regular load for 6mmBR is with H4895. I have Varget & H4895 on hand but I am weighing my options for future powder scarcity. My question is does anyone have a load using Norma 203B ( I know not temp stable) or Vihtavuori N540 with either 105 hybrid or 108 ELDM? just looking to expand my powder options.

 

[Doc68]

My regular load for 6mmBR is with H4895. I have Varget & H4895 on hand but I am weighing my options for future powder scarcity. My question is does anyone have a load using Norma 203B ( I know not temp stable) or Vihtavuori N540 with either 105 hybrid or 108 ELDM? just looking to expand my powder options.

I'm using 540 right now.

26" 1/8 twist tube from PVA
29.5gr 540
105 hybrid
450 primers
2 times fired Peterson brass
10 thousandths off lands

1/4-1/3 MOA at 100yds.

Doc

 

[Tokay444]

Who’s running 7 twist over 7.5?

 

[Doc68]

I'm running 8 amd have zero issues up to 105gr. Dont know how much better a 7 or 7.5 would be over that.