Accuracy of 6br norma vs 6br remington

[Toby Bradshaw]

How much?

But I'd figure about $4.5K for the rifle shown, with all new components.

 

[johara1]

the throat is the issue, not the brass

The brass is different it has to be rechambered to 6br Norma to use Lapua brass..... jim

 

[mikeeg02]

I went to the Savage Arms site and saw a model 12 Benchrest chambered for 6br Norma. It looks like a keeper for an amateur like me but I wanted to get your thoughts about it's quality and accuracy. Any opinions would be helpful.

Thanks,

Ken

I shot one all last year in factory class ground hog (200,300,500) matches here. There was only one match I didn't win, and I told the guys this was their match to win.(not gloating, we all shot a lot together, and I was "the person to beat" in factory class) I was up late the night before and hungover. Gun still did it's job, the shooter didn't, though I still took second. They are great starter competitive rifles with some limitations, but out of the box a great buy and a great way to start the addiction.

I think mine was called the f class with the flat bottom tail stock, and dual port configuration.

 

[dkhunt14]

it is all in the throat as to the diff.
so because of twist and throat you are in light bullets..
what distance are you thinking of shooting ?

Look up the thread, Difference Between 6mm BR-Norma and 6mm BR-Remington. Search and if you cant find it, look at Stan Taylor and look at his posts. He even has pics with the micrometer on them. The Norma version is bigger on the .200 line and it will give you fits with sizing when used in Remington BR. You will get bolt click.

There are a couple of good posts under that thread explaining the difference. Matt

 

[retired]

so you are telling me that production chambers and norma's claim that the only difference is in the throat,, is not true ? i am not talking about custom rifles.

Look up the thread, Difference Between 6mm BR-Norma and 6mm BR-Remington. Search and if you cant find it, look at Stan Taylor and look at his posts. He even has pics with the micrometer on them. The Norma version is bigger on the .200 line and it will give you fits with sizing when used in Remington BR. You will get bolt click.

There are a couple of good posts under that thread explaining the difference. Matt

 

[expiper]

so you are telling me that production chambers and norma's claim that the only difference is in the throat,, is not true ? i am not talking about custom rifles.

YES,,,people who have had these BR's (including me) since the 70's know how it is ,,,,the inter net gurus and keyboard shooters only know what they have read or seen in a catalog,,,,I have had em since the inception and the original BR case is smaller at base line at shoulder and shorter length ,,,,the FB and ND are varialbe on any of them and not what causes the problems,,,,IN these modern times the only sensible thing to have/use/buy/construct is the Norma version which uses Lapua brass !!!!,,,,as Jim says in response #22 on this thread is if you have or get one of the old chambers,,rechamber it to the Norma version,,,,there are some old style dies still around (I have some) so beware ,,,,anything new production from Redding,etc will be the new dims,,,and be shure the gunsmith doesnt try to use a reamer that is "old" Rem. dims,,,,dont be misinformed by some newbie that works for Norma/Lapua,etc that has never had any of the early stuff or even shot in a real "B"enchrest event,,,,Roger

 

[hogpatrol]

If you go the 6BR route and use Lapua or Norma brass, make sure your dies have the small diameter decapping pin. There's more than one horror story on here about people using the larger one and opening up the flash holes.

 

[dkhunt14]

so you are telling me that production chambers and norma's claim that the only difference is in the throat,, is not true ? i am not talking about custom rifles.

Look up and read that thread, there are pictures with micrometers showing the difference in diameter. Matt

 

[Dusty Stevens]

Look up and read that thread, there are pictures with micrometers showing the difference in diameter. Matt

proof is on the picture- no internet folklore going on. the BR REM chamber IS in fact different than the BR norma chamber. anybody that was around during that transition is well aware of the nightmares associated with the change.

 

[rwj]

Know that this post is “late to the party”... the CIP specification sheet for the 6mm BR Norma is attached. The plan was to also post the same for the 6mm BR Remington, but alas a specification sheet could not be found in the SAAMI listing. It would be sincerely appreciated if another member would post it so as to permit direct comparison of the two.
Please note that the CIP spec sheet lists cartridge dimensions in the left-hand column and chamber dimensions in the right-hand column. All dimensions are in millimeters and for MMC (maximum material condition).

 

[BoydAllen]

I have found that in many cases drawings do not reflect reality, particularly with regard to cases. There has been lots of information posted about the differences in the dimension of these two similar but not identical calibers. One problem with internet discussions is that some people value their opinions above credibly reported actual experience.

 

[Laurie]

proof is on the picture- no internet folklore going on. the BR REM chamber IS in fact different than the BR norma chamber. anybody that was around during that transition is well aware of the nightmares associated with the change.

Yes on that, also what dkhunt and Expiper say.

My first 6BR was in effect a hybrid, the gunsmith using a 6BR Rem chamber reamer that he must have had for years and presumably a throating reamer to get the 'Norma version' freebore (in a 1:8" twist barrel).

Around one new unprimed Lapua 6mm BR Norma case in four wouldn't chamber at all. Most on trying in the chamber in out of the box unfired unprimed form would chamber but put up a real struggle on extraction. Maybe a quarter chambered and extracted easily in this state. ALL gave hard extraction after firing - a soft-faced mallet became part of my range kit to tap the bolt open until I got hold of a Redding small-base body die. Used on new brass, this made the problem manageable, but cases returned to their original oversize form over four or five firings if the SB body die step was omitted between loadings - and this was with pretty mild loads, 100 fps down with 105s on what most people load to.

 

[hrlincoln]

Know that this post is “late to the party”... the CIP specification sheet for the 6mm BR Norma is attached. The plan was to also post the same for the 6mm BR Remington, but alas a specification sheet could not be found in the SAAMI listing. It would be sincerely appreciated if another member would post it so as to permit direct comparison of the two.

You must have missed this...

http://www.cip-bobp.org/homologation/uploads/tdcc/tab-i/tabical-en-page13.pdf

 

[rwj]

You must have missed this...

http://www.cip-bobp.org/homologation/uploads/tdcc/tab-i/tabical-en-page13.pdf

Haha, worse... it was “assumed” that the Remington chambering would have been documented in SAAMI and the CIP listing was not even searched.

I’m quickly learning that this topic goes down a very deep rabbit hole and will quit digging. Thanks to those that have shared their experiences which appear to include the wildcat version(s) that were used before the CIP standards were created!