6br, 6brx, or 6x47 Lapua

[DennisH]

I thought I had my mind made up on my new build. 6x47 is easy to form, no problem with 6 br, 6brx waste a lot of barrel.

What do I want to build to punch paper out to 1K yds? I have everything but the barrel.

 

[Bob3700]

6Br is a little to weak for 1K shooting. The BRX will give you a lot of bang for the buck. Don't wear you bbl out forming brass, just get the hydraulic forming dies, they work great. The BRX shoots great while fireforming. Just shoot those cases at 600 yds.

The Lapua takes a lot more powder (and therefore bbl wear) to do similar things as the BRX.

Just my .02.

Bob

 

[DennisH]

Bob, thanks for the reply! Tell me more about the hydraulic forming dies, where to get them from, do you use them when reloading spent cases, etc.?

Thanks again, Dennis

 

[fullersson]

Go to the accurate shooter home page and type in hydraulic forming dies. That will get you to an article in the daily bulletin about Hornady's hydraulic forming dies. My understanding about these dies is that they are only used once per piece of new brass. You send Hornady a reamer print or some fully fire formed brass and they custom make the die. This die should take the place of fire forming brass.

 

[RDavies]

I would say the 6 BRX. As for fireforming the brass, use Trail boss or a smaller charge of a faster than normal powder to fireform your brass and run your barrel in at the same time. If you use something like Trail boss, you can fire all your fireforming loads pretty quickly without warming up the barrel.

 

[MarkS]

DennisH,

I have shot 6BR and 6BRX for years. The 6BRX is the way to for 1000 yds. I know 5 guys that did a 6 X 47L, and could not get them to shoot, cut the chamber off and rechambered to 6BR or 6BRX, and would shoot. I think it need a large primer when necked down to 6mm.

Mark Schronce

 

[coupalr]

Drilling the flash holes larger makes a big difference with the 6X47L.

 

[DennisH]

Drilling the flash holes larger makes a big difference with the 6X47L.

What size are you drilling the flash holes to? If you can, tell me what difference I should expect!

I also have a 6.0x47L and 6.5x47L!

 

[topwater225]

Drilling the flash holes larger makes a big difference with the 6X47L.

That's interesting information.......

I have personal experience that lies 180 degrees opposite on the spectrum......I am good friends with 2 individuals that recently built 6X47's and they are no doubt the most accurate rifles I have been around. In fact, I am in the process of getting one myself because of that experience.

 

[RDavies]

As for 6x47s, I have fired 1000s of shots with mine, in different barrels and havent been able to get any consistancy (sometimes good, sometimes crap). But then, the last time I shot, a shooter used a 6x47 through 3 days of competitions and it was one of the most accurate rifles I have seen.
A few high scoring shooters I know have had similar experiences, hot or not.

I will try another 100 shots or so of load developement with my latest 6x47, and if it doesnt improve, I will get it docked and get my Dasher reamer run in. (Or a BRX reamer and use a spacer under my 6BR dies) .
The most accurate barrels/chamberings I currently own are a 6 dasher and 22BRX

As soon as I heard the stories of better accuracy with drilled flash holes, I reamed a few of my cases out to experiment, and although I didnt shoot them on target, the crony results didnt show any improvement with my combo (CCR 450 primers, H4350 powder, 103gn bullets, 2 different barrels)

 

[MarkS]

MuleyTime,

That is the problem with the 6 X 47L. when they shoot, they shoot, when they don't they don't. I went thru that with a 6XC, so I'm going with the 6x47L. I will stick with the 6BRX, a know preformer.

Mark Schronce

 

[kjcpoint]

I guess im in the same boat as Dennis. Going to build a tube gun and was leaning towards the 6x47L. If they are that hard to tune i would go another route?

thanks
Kyle

 

[topwater225]

Oh......I sure hope I get a good one.

The "other" main reason I chose the 6X47 is that it feeds well. I do little tactical comps that really need a good feeding round.

 

[topwater225]

As for 6x47s, I have fired 1000s of shots with mine, in different barrels and havent been able to get any consistancy (sometimes good, sometimes crap).

I've been thinking about this statement. Please don't take this wrong, because I'm definitely NOT bashing you, but more questions come up. I don't think your problem is the caliber, but maybe something else, like:

Chamber/Reamer - Have you tried different reamers?

Gunsmith - 1000's of rounds with multiple barrels?? Maybe look for another common denominator....

Barrels - I would assume you tried different brands, but I have to ask...

Something just doesn't add up with the 1000's of rounds with multiple barrels = no consistency.

All that being said, my first one will show up today and I will hopefully get you some reports from the weekend.

It was built by Nate Dagley with SSG.

 

[RDavies]

Muley. I have tried 2 different brands of barrel, both good brands, but have had one rechambered 3 times. It was first in a Panda, then a Barnard, then rechambered for the Panda again,2 different gunsmiths, 2 reamers, 3 chambers, the last reamer .002 wider, with a slightly longer throat.

I have had the older barrel go very very well for a while, then next time I use it in a big comp, it plays up again, nothing realy realy bad, but definitley makes Xs a hit and miss affair. I monitor the velocity and keep the same powder lot numbers, same bullet lots, but still got what a few shooters here in Australia call 6x47itis. My latest barrel is currently going very well, after taking 300 rounds to get it working well. Groups hovered around 1 moa with 3 different powders, 4 different bullets, but is now MUCH better than this in a narrow seating depth and powder weight window. I still want to use it for a few more shoots before I use it in a big comp.
As you say though, this is a limited sample and one of the most accurate guns I have seen lately was a 6x47 through 3 days of competition.
A few other shooters in my area have had a similar experience, different reamer than mine, different barrels, but found it more finicky with tuning and keeping in tune than a Dasher or BRX. These are shooters who have won big competitions and have shown they can get rifles shooting well. A C grader might be happy with the accuraccy, but A graders are after more consistancy.