6mm BR

[Westy]

So who has one and what do I need to know about them????? I was shooting one today and it made me look Great,is there a down side to this Calibre??

Cheers In Advance
Westy

[Chronos]

I have owned one for about 6 months.

one question, what do you want to use it for?

Like the .223 there are two main groups of 6BR rifles. Hunting and target

For hunting sporting rifles with slow twist barrels shoot light hunting bullets in the 60gr range

For target shooting fast twist barrels drive 105gr - 107gr high BC bullets like Berger VLD's and lapua scenars

There are a few improved versions of the. 6br, itself a wildcat of the .22BR case. 6BRX and 6Dasher both push the same bullets a bit harder, mainly to reduce group sizes at ranges out to 600y where this caliber rules in competitions here and overseas

My BR rifle shoots lapua brass that's neck turned and fully prepped. I load with 2208 and loads are safe in my rifle at 30.3 gr under Berger 105gr VLD's for 2700fps

It's hard to judge exactly how accurate a cartridge is as its so important to get everything right but this load in a target action with a match grade barrel fitted with a 12-42x 56 nightforce, a terrible modified factory rem trigger (hope to fit a jewell BR trigger soon)

Sometimes everything works and the load testing for this rifle saw some goid groups and good chronograph results

This group was shot at 200y, the chronograph read a three shot group at 2711fps with an extreme spread of 7fps and a standard deviation of 3fps.

Getting any load/gun to do that reliably isn't easy
Here's a pic of that target, squares are 1"



And here's my fireforming target, I had 70 odd cases I had preped and wanted to fire form them all in one sitting.

10 shot groups except for the bottom one in the sighting ring.



I clicked down for each successive group to keep an eye on drift caused by fouling.

Feel free to ask anything if there's something you want to know

Chronos

[handofcod]

Fark!

[Apollo]

So who has one and what do I need to know about them????? I was shooting one today and it made me look Great,is there a down side to this Calibre??

Cheers In Advance
Westy

The burning question is "What do you want to use this calibre for." ??? That will dictate what the "down side" might be.

I have had a Sako S491 Single Shot 6mmBR for a few years now, 1:14" Twist so it's a short range, light bullet varminter come makeshift target rifle.

Very efficient cartridge design, one of the very best and can be used for a number of tasks. All depends on the design and barrel used for the intended purpose. There can be a few different cartridge chamber designs from the initial sized down and shortened .308 case.

My Sako is also a "Switch Barrel" and has two other barrels in .22BR Norma for short and long range. One a 1:14" the other a 1:8" Twist.

[von_klitzing]

What is the barrel life expectancy compared to other calibers?? Eg. I like to stay away from calibers that chew through barrels faster. (is that a valid question?) Looks like a caliber with great potential. Why doesn't everyone have one?!

[Apollo]

The 6mmBR is basically a Target Calibre and as such it's barrel life is mid range to good and should see well past 2,000 rounds but like everything else if you push it to the limit it will have detremental effects as in increased barrel (throat) wear. It certainly is not a barrel burner as for example the 6.5-284 Norma that can have a barrel life of around only 800 rounds. We are talking accuracy life as in target, better than 1/8 MOA to 1/4 MOA not accuracy as in varminting or even hunting where even 1 MOA is considered accurate.

Many a "worn out" target calibre barrel is used for varminting accuracy for many years after it's so called "used by date" for competative target.

Why doesn't everyone have one, because it's basically a "wildcat" target calibre and not many commercial manufacturers produce a rifle chambered in this calibre yet alone build one good enough to compete against custom built equipment. Even though you can buy commercial ammunition (Lapua) it's not produced for hunting/varminting but aimed at sports shooting/target. It is not your everyday .222R/.223/R/.243W or even .308W type rifle and ammunition.

There is another great asset for calibres like this little cartridge and that is very low recoil which is a great asset when large numbers of rounds are fired in one day during a competition.

It's pretty hard to know where to head here without knowing the OP's purpose in mind but lets say small game hunting / varminting. If you compare a common available calibre like .243W using a 60gr bullet at a similar velocity of around 3,400 fps the 6BR does it with around 8gr less powder and far less recoil and noise. It's like many others that are referred to as very efficient calibres with short stubby cartridge cases.

An informative article on the various aspects of the 6mmBR....

http://www.accurateshooter.com/cartridge-guides/6mmbr/

There is a lot of information, hints, tips and reloading data available, even Nick Harvey.

[Westy]

This ones for punching paper,I've got enough hunting rigs at present!!!Thanks Guys for the feedback here great to know whats out there and Chronos that shootings off the hook Old Mate.10 shot groups WoW.Now would you think this would work well for the 500 Fly???LOL

[Chronos]

This ones for punching paper,I've got enough hunting rigs at present!!!Thanks Guys for the feedback here great to know whats out there and Chronos that shootings off the hook Old Mate.10 shot groups WoW.Now would you think this would work well for the 500 Fly???LOL

Mate to be honest I can't thing of a better choice of calibre for target shooting out to 500-600m.

A combo of a quality barrel with a no turn chamber, lapua brass, Berger 105 VLD's and 2208 should give you a solid 500m performer. A BRX or Dasher chamber will give you similar accuracy with a little more speed which may help your scores if you miss read a wind shift, more work with fireforming required before serious load development begins

Keep an eye on the used gun web sites target sections as there's often second hand guns people sell when they upgrade


Chronos

[Apollo]

Why LOL, I believe that's what he purchased it to do.. 500m Fly and there have been a number of wins with a 6mmBR.

My 500m Fly is a 6.5x47 Lapua.

[Westy]

Now I know that a 6.5x 47 is a awesome Cal.We use it for militry shoots out to 800m shoots like a dream just saw one of these Br's and wanted oneLOL

[Chronos]

Now I know that a 6.5x 47 is a awesome Cal.We use it for militry shoots out to 800m shoots like a dream just saw one of these Br's and wanted oneLOL

yeah as Apollo said i bought the 6BR as a 500m fly gun. After i had built my .284w i sold the stock and had a failed attempt at inletting a BR stock for it. At my first 500fly shoot it wouldn't group in the new stock and i decided to buy a dedicated BR gun. I bought an old Hart actioned gun with two barrels, 6BR and 6PPC, fitted my nightforce 12-42X56 and bought an old Seb gen 1 rest and a Seb big foot rear bag

when you see the equipment list at a fly shoot and most of the top performing shooters are shooting 6mm's with nightforce scopes it's difficult to come up with a reason to go another way

Chronos

[schink]

10 shot groups except for the bottom one in the sighting ring.

Great shooting mate

[Weepy]

was shooting one today and it made me look Great

LOL. Give yourself a bit of credit