6br?

hammerz75

hammerz75

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Currently shooting 6.5 Creedmoor, thinking about 6mm (all the cool kids are doing it;). Is 6BR a viable precision rifle match style cartridge? if you can get it to mag. feed. Thoughts?
 
Been involved with the 6BR for close to 15yrs.. Lovely cartridge. Very accurate, easy on barrels, easy to tune.

The question is will the 6BR work for the types of environments you plan to shoot in? Mid range, low winds, fast transitions needed... drop the recoil for sure. Some are even looking at the 22BR and other 22cal options.

Shoot in a place where 15MPH is a typical day with distances out to 1200yds, I would bring more lead.

My guess on why shooters are looking at the 6BR is bore wear. The typical mid size 6mm will give more velocity but it eats barrels (despite internet claims). Is a couple of hundred FPS worth the big drop in barrel life? Remember, you can always down load a bigger case like the 6XC or Creedmoor... there really is no reason to fuss with the BR case in AICS mags.

The cool kids may be playing with it but I would go with a down loaded 6XC or CM for simple no brainer function in my rifle. Why would you want to fuss with mags and possible function issues?????

Having played with pretty much all popular chamberings over the years, the key is not that one is better then another... but which is better for the tasks at hand.

If not restricted by the rules of the sport, choose what works best for a given need. And then change as the need changes.

But to win, you have to first finish.. .and to finish, your rifle has to 100% reliable. Can you make a 6BR run in a standard SA? sure, maybe.... but why would you want to?????

Me, I am going to stay with the 6.5 Creedmoor... and make it a 1 size fits all. At least out to 1500yds...and beyond that will require a new toy which is really where I started :)

YMMV

Jerry
 
Building a 6mmbr (maybe dasher) for the 2018 season, 105 gr bullets at high 2800/low 2900s should serve me just fine.

Something like 7 out of the top 10 PRS shooters were shooting a 6mmbr derivative (Dasher for example).

There are mag kits that you can buy that work really well but the top shooter (Matt Brosseau) ran a Dasher with no mag modifications.

Most shots in a PRS match are 800 yards and in and that extra 100 fps wont make a difference at those distances. The question than becomes can you shoot that extra click or 2 better at extended ranges. If i was always past 800 I would probably go with something bigger.

Just make sure it feeds and ejects well out of what you are running, this applies to everything though. Lots of videos of br (and br derivatives) running out of Surgeons, Bighorns, Defiances, etc.
 
Mystic Precision said:
Been involved with the 6BR for close to 15yrs.. Lovely cartridge. Very accurate, easy on barrels, easy to tune.

The question is will the 6BR work for the types of environments you plan to shoot in? Mid range, low winds, fast transitions needed... drop the recoil for sure. Some are even looking at the 22BR and other 22cal options.

Shoot in a place where 15MPH is a typical day with distances out to 1200yds, I would bring more lead.

My guess on why shooters are looking at the 6BR is bore wear. The typical mid size 6mm will give more velocity but it eats barrels (despite internet claims). Is a couple of hundred FPS worth the big drop in barrel life? Remember, you can always down load a bigger case like the 6XC or Creedmoor... there really is no reason to fuss with the BR case in AICS mags.

The cool kids may be playing with it but I would go with a down loaded 6XC or CM for simple no brainer function in my rifle. Why would you want to fuss with mags and possible function issues?????

Having played with pretty much all popular chamberings over the years, the key is not that one is better then another... but which is better for the tasks at hand.

If not restricted by the rules of the sport, choose what works best for a given need. And then change as the need changes.

But to win, you have to first finish.. .and to finish, your rifle has to 100% reliable. Can you make a 6BR run in a standard SA? sure, maybe.... but why would you want to?????

Me, I am going to stay with the 6.5 Creedmoor... and make it a 1 size fits all. At least out to 1500yds...and beyond that will require a new toy which is really where I started :)

YMMV

Jerry
Click to expand...

^ Plenty of people running 6BR's, Dashers, etc. in precision rifle comps. Those issues above are overstated. Plus, the fast 6mm's have their own issues. And as much as I like my 6.5 creedmoor, not sure why we are talking about it in this thread nor how far you can shoot it?

The control round feed actions handle the shorter 6mm cartrides very well. People are also having success using rem 700's, Defiances, Surgeons etc. It's not so much the feeding that's the issue, it's the ejection.

For mags, there are a few 6br/6 Dasher mag kits that are desgined to be used in AICS mags, such as the PVA or Primal Rights kit. The Magpul AICS mags apparently work great with no modification as well.

There are good reasons for why people are going to the Dashers and BR's over the XC's and the creedmoor's, though I wouldn't expect someone who doesn't shoot the discipline to understand that.

Good luck, it's a very feasible project despite what others have stated.
 
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Since you brought it up.. please do share your thoughts on the benefits of the shorter BR case.

What makes it better then a 6XC or 6mm Creedmoor?

And how you would set up the rifle to be 100% reliable... the OP should get this info don't ya think?

Jerry
 
Ryan.M.Anderson said:
Building a 6mmbr (maybe dasher) for the 2018 season, 105 gr bullets at high 2800/low 2900s should serve me just fine.

Something like 7 out of the top 10 PRS shooters were shooting a 6mmbr derivative (Dasher for example).

There are mag kits that you can buy that work really well but the top shooter (Matt Brosseau) ran a Dasher with no mag modifications.

Most shots in a PRS match are 800 yards and in and that extra 100 fps wont make a difference at those distances. The question than becomes can you shoot that extra click or 2 better at extended ranges. If i was always past 800 I would probably go with something bigger.

Just make sure it feeds and ejects well out of what you are running, this applies to everything though. Lots of videos of br (and br derivatives) running out of Surgeons, Bighorns, Defiances, etc.
Click to expand...

Great info and thanks... although it kind of sounds vaguely familiar to my explanation earlier????

If these are the parameters that best suit this game at most ranges, I would skip the 6BR and go straight to a 6mm TCU or maybe a 22 Valkyrie or a 6mmSPC

Shooting in Washington state, I don't think I would be running a slower 6mm..... on some days, the 6.5 PRC or RSAUM/GAP would be a light gun.

Jerry

PS, I would take a good look at the "new" mini HOWA action. Another gem would be the Brno Fox or whatever the CZ numbering is now.... but what do I know....
 
PVA or Primal Rights mag kits just like Kthomas said.

Jake Vibbert shoots a lot in Washington state with a 6BRX and lots of others shoot 6br.

Recoil mgmt and spotting your impacts are way more important than more speed.

Jerry knows tonnes about f-class but to the OP maybe looking at what the top shooters ate doing is more important. There has been a trend in PRS. 30 cals to 6.5mms and now to 6mms.

Low recoil is key and the 6br has good enough ballistics, long barrel life, high quality components, and is not too expensive to reload for.

I think Kthomas and I might have a couple more PRS type matches under our belt than Jerry...
 
6x47 would be a better choice over the BR for feeding reliability, as would a 6mm-223rem or 6x45, throated for the heavy bullets, feeding is then a zero issue and magazine length becomes the only challenge, the longer Atlas action solves both of those but at a cost, for a new built it's a no brainer but for modifying current equipment the price rises quickly. The CRF of the Bighorn action solves ejection issues, but is limited to case length

possibilities are endless, as are the costs of success
 
I don't have PRS experience but - like I say earlier - I have 3 ( 4 actually if I include the 243 ) 6mm caliber rifles. I'd contemplated getting a 6mmbr in a repeater but was shy of mag feeding and ejection so went firstly with 6xc and then ( just cuz ) added a 6CM. I'd like to better understand the advantage of 6mmbr in PRS over the 6xc. PM me if you know but don't want to post. I'm not "married" to any caliber - just want to learn more.
Bob
 
It is a splitting hairs issue and I quite like my 6xc but the barrel life of the 6br is better and it has even less recoil.

When shooting off of barricades the less recoil the better for spotting your own shots.

Most guys are not actually shooting a straight br, most are dasher, BRA, or BRX. As Jerry said you could down load the 6xc or 6creed but I think the br is more inherently accurate, the smaller charge size and really long neck probably helps.

The mag feeding issues are over blown as Kthomas stated. Not sure if you have IG but there are tonnes of videos out there of 6br cartridges feeding from a mag just fine.
 
IMG_1663.jpg

Wonder how long before this is THE set up???

[youtube]SrhB29UIpJ4[/youtube]

Just skip along and you can see the group form... Another option that feeds from a mag and has very little recoil. Shot at 500m.. took my time to shoot into the correct condition. Shot 3 was an over correction. I think I ended that string very nicely with shots 4 and 5.

if you skip to the last 15 secs, you can see the completed 5rds group.

Jerry
 

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This sport is moving faster then any sport I have been involved with... it is really cool to see how shooters are bold and make big changes to find solutions.

Game changer bag....

MPA vertical grip... very comfy and let me be interested in chassis again.

Look at the ARCA Swiss rail ... BAM!! That is a smoking good idea and just changed how accessories are used. What will be the next "BAM"????

That is my FTR 223 ammo.... circa 2009. Shoots pretty darn well but got tired at 1000yds so it was off to the 308 with heavies.

Sierra will be releasing a 95gr 22cal spear. Sku code now exists so bullets aren't far behind. G1 BC of 0.600.

The goal posts keep moving along...

Jerry
 
Tomochan said:
I don't have PRS experience but - like I say earlier - I have 3 ( 4 actually if I include the 243 ) 6mm caliber rifles. I'd contemplated getting a 6mmbr in a repeater but was shy of mag feeding and ejection so went firstly with 6xc and then ( just cuz ) added a 6CM. I'd like to better understand the advantage of 6mmbr in PRS over the 6xc. PM me if you know but don't want to post. I'm not "married" to any caliber - just want to learn more.
Bob
Click to expand...

It's not necessarily better, but does have some advantages. Lower recoil (you are using 29-31 grains of powder vs 41), longer barrel life and you don't have to keep tuning it over the life of the barrel (less finicky), very easy to develop a load for (though so is 6xc).

The 6xc is a great round. You can push those 6mm pills very quickly and with ease out of the 6xc. If I was to go with a "big" 6mm, it would definitely be the 6xc, I think it's a great round that is very well suited to PRS.

I believe people are switching to 6br's, dashers, etc. due to low recoil, ease of load development and lack of needing to tune loads over the barrel life.
 
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