Curious about 6mm BR Rifles.

M

murphy

Guest
Can some kind person tell me a few things about 6mm BR caliber. First are the Norma and Remington versions interchangeable. Does anyone make a factory produced rifle in this caliber and is fully formed brass readily avaliable. In custom bench rest rifles, is this caliber competitive with 6ppc? I suspect that this cartridge is bigger than a 6ppc, is this so and if so how much bigger and will they feed ok out of a magazine rifle. A slightly in the dark Murphy.:confused:
 
I don't know a lot about it. I do know that the BR has a bit more case capacity than the PPC. The Norma BR uses a small rifle primer, and the Rem BR uses a large primer. As far as actual case measurements between the Norma BR and the Rem BR....??????????
 
6 br

I just had a custom 6 BR made for prairie dog hunting next year. My gunsmith used a reamer that accomodates both the Remington and Norma brass. I've been told that the Norma case is slightly longer but will work in a Remington chamber. I use Lapua brass as it has always proven to be the premier brass in my other calibers. The 6BR has a slight edge over the PPC in powder capacity which translates into higher velocities. Since I'm only going to shoot Bart's 68 gr bullets, I opted for the 14" twist barrel. You would want a faster twist if you wanted to shoot heavier bullets. Everybody online says that its a very accurate cartridge and a perfect varmint / deer caliber. Good luck. ;)
 
Murphy,
What's your intended use? I believe remington still makes the 6mmbr in the 40x and I think cooper does to...however, a custom will run just a little more that either one of those. Also, twist rate is important depending what you want this gun to do.

Hovis
 
Tod my 6br Rem brass uses small primers I don't remember any factory br case made with the large rifle primers. I know a few people who made other brass into br cases and used brass with large rifle primers.
 
According to the Cartridges of the World the cases are identical but the chambers are different. The Norma is cut for the longer VLD bullets where the Remington is cut for the shorter varmint / BR type bullet. I don't believe that it is as accurate as the ppc in the 100 to 200 yard class but out shines it at longer distances. I learned to make sure that your gunsmith cuts the chamber to the Norma dimersions as it is very hard to go wrong with it plus it gives you the choice of bullets. Also look at www.6mmbr.com for more info.
 
Last edited by a moderator:
There is a lot of misinformation or partial information in this thread.

Please do go over to 6mmbr.com and read to get yourself grounded on the subject. This is probably the quickest and most accurate way to be brought up to date on the round.

Also, use the search function and search each of your individual questions right here on this site. Between here and 6mmbr.com you can access any and all information on the subject. Be warned, it's a large subject :)

Do yourself a favor and do the research before you order up a gun. The 6BR comes in hundreds of varieties to do many different jobs. IMO it's not the "best" at anything but it IS THE BEST at a lot of different things......it's a very versatile round.


Regarding your immediate questions:

Can some kind person tell me a few things about 6mm BR caliber. First are the Norma and Remington versions interchangeable.---NO

Does anyone make a factory produced rifle in this caliber---YES

and is fully formed brass readily avaliable.---YES

In custom bench rest rifles, is this caliber competitive with 6ppc?---NO

I suspect that this cartridge is bigger than a 6ppc, is this so and if so how much bigger---only a little bigger, not worth quantifying with numbers. There are plenty of pictures and descriptions on 6mmbr.com. If that doesn't suffice, I can snap a dig-pic of them side by side.

and will they feed ok out of a magazine rifle.---YES/NO depends on the type of mag

A slightly in the dark Murphy.---hth

al
 
Listen to Al. There is incorrect info above his, I was about to reply, but Al not only beat me to it, did it much better than mine would have been.

Jim
 
Savage makes 2 different 6BR

Savage is now offering the 6BR in both the Long Range Precision Varminter (LRPV) as a single shot or as a clip feed repeater and the F-Class rifle. LPRV is a 1:12 26" I think and the F-Class is a 1:8 30". I have seen some excellent results from both factory rifles . I don't own either.

I have been watching benchrest matches for about a year. I am putting together 6BRs and 30BRs on Savage actions. The 30BR is for score. The 6BR will be for group. Is it competitive with the a 6PPC? I don't think so. I see 20 6PPC to 1 6BR at the few matches I have been to. If I decide I like benchrest and have time to actually practice enough to be competitive, then a 6PPC with be my choice. I haven't made that decision yet.

Luck, tiny
 
To alinwa and the rest of the crew.

Just when I thought I was an autority on just about everything this 6BR thing come along. I love this forum because there is always so much information and experience avaliable. Have no intention of building one at this stage but the idea of finding a clapped out Ruger Mk2 target rifle and building a 6BR varmint rig out of it is very appealing. Reguards Murphy.:D
 
You guys forgot one - the original 6BR made from the Remington Basic BR brass.

6br.jpg
 
Thanks for the picks.

The newer version looks like it has a longer neck. Does anyone know what a 6x47 lapua is, am thinking that maybe its the same thing?
 
Murphey

The BR is 39mm long whereas the 6x47 is, uhhh, 47mm long.:cool:;)

Ray
 
Well thank you Cheech for coming through on the pix which show the minuscule difference betwixt the PPC and the BR.......now I'll catch your back with a comparison of the 6BR with the 6X47.

Sorry guys that my pix ain't as nice as The Cheechako's are. These were just in my file for my own personal reference.

One pic shows a virginal 6BR case mashed into a set of parallel jaws alongside an equally pure 6X47, this serves to nicely illustrate the difference in body taper.

The other shows the neck-down process from 6.5X47 to 6X47.... the picture was taken to illustrate the offset which occurs when the neck is squunched down.


hmmmmm, that sounded better than it spelled....

Squeezed down??


LOL


al
 

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alinwa said:
.... the picture was taken to illustrate the offset which occurs when the neck is squunched down.

hmmmmm, that sounded better than it spelled....

Squeezed down??
Click to expand...
For cryin' out loud! The technical term is squidged! :p

Squunch is a sound that your sunglasses make when you sit on them.

Nice illustrative shots. Thanks.
 
You know..... now that you say it squunched is EXACTICALLY the sound my glasses made when I sat on em!

You're freakin' physic man..... :cool::cool:

al
 
I would like to correct myself, the norma has a longer neck and some say the web and the body dimensions, I was not trying to give inccorect info just repeating what was in the book. The only down fall to the 6BR is that the improved versions offer better velocities for long range shooting (600 to 1000yrds). If you want a very accurate all around round than you can beat the BR but if you plan on doing serious shooting than there might be better rounds.
 
6 br

I had my 6 BR reamer ground to the Lapua/ Norma brass specs for a no turn neck with about .003" clearance. I have it throated with .045" freebore and 1.5 degree leade. If the customer want to shoot the heavier VLD/ match bullets I have him provide a dummy round and use a separate throater to provide what he needs. The reamer throat has proven to be exceptionally accurate with the lighter varmint bullets. Rem BR brass can be used, but with the quality of the Lapua brass, why would anyone do that?
 
Noth Fork said:
Murphy just go over to 6br.com Any thing you want to no about a 6br is on that forum.
Click to expand...

That's not something that I would agree with. 6mmBR is a great site, I visit it every day, but NO site has EVERYTHING.

JMHO

Ray
 
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