Need some input on a build

[mrpistol]

I am considering building a fast twist (8") 6mmX47 based on the 222 mag case. I am hoping this will be accurate and still have some half decent velocity out to 500 yards. And since 222 mag brass is getting hard to find I plan on using norma 204 brass. Any and all input would be appreciated.
Mr.pistol

 

[jonbearman]

Why not a 6 br as it will reach way out with the heavier bullets.

 

[mrpistol]

I have to work with what I got. A stainless 700 short with 223 bolt face size and I have a krieger HV 8" twist barrel.

 

[GerryM]

having shot the 6/ 47 in benchrest over the years i advise to think about a different cartidge , case combination. They shoot fine with light bullets at short ranges {up to 250yds but run out of steam past that.
I also have a 6/47 improved that is a tad better. I think you would be better off with something like the 6BR for longer ranges and heavy bullets.
If the bolt face is a concern you can have it opened up or buy a replacement from Dave kiff at pacific precion.
Hey good luck with your build and hope you keep them in the X ring''

 

[jonbearman]

You can have the bolt face opened up or buy another .473 face bolt.It is not complicated.

 

[alf]

I am considering building a fast twist (8") 6mmX47 based on the 222 mag case. I am hoping this will be accurate and still have some half decent velocity out to 500 yards. And since 222 mag brass is getting hard to find I plan on using norma 204 brass. Any and all input would be appreciated.
Mr.pistol

Skip that notion and do a 204 Ruger necked to 22, AKA 22-204, which is NOT the same as a 222 mag necked up. I've built 3 of them and a 4th just getting finished up. All with 8 twists for the 75 class bullets. About a grain more capacity than a 223 Ackley, and NO fireforming. 22" tubes are running them at 3050-3075 and my one 26" does 3150 with 75's. Gives up nothing to a 6 BR with 105's.

Some cases for comparison.....

221 Fireball --- 222 Rem --- 223 REM --- 223 Ackley --- 222 Rem mag --- 22-204

[/quote]

 

[MarkS]

Mr.pistol,

The boltface can be opened up to a BR. Buy if you want to go 6 x 47, it should be a good round.

Mark Schronce

 

[superlight93]

The boltface can be opened up to a BR. Buy if you want to go 6 x 47, it should be a good round.

Good advice on the boltface opened up .

BAD ADVICE on saying it would be a good round, Not with a 8 twist barrel!

 

[Samdweezel05]

The boltface can be opened up to a BR. Buy if you want to go 6 x 47, it should be a good round.

Good advice on the boltface opened up .

BAD ADVICE on saying it would be a good round, Not with a 8 twist barrel!

The 6br with an 8 twist isn't a good idea? Then the 2 I have built and the one I am waiting for a barrel for have been flukes? Or maybe I am misunderstanding.

 

[jhord]

Alf- Could you provide more info on the 22-204? Dies you are using, what 'smith did your chambering, etc? Sounds interesting.

 

[lynn]

Put an ad in the free classifieds on this website for a bolt swap.I don't have any laying around or I would trade you straight up.
Once you get the new bolt build yourself a 6BR and thank your lucky stars you got on this website and built yourself one of the best cartridges ever invented.
Lynn

 

[lynn]

Alf
Is your stock fiberglass or is it laminated Ice-wood?
Lynn

 

[alf]

Alf- Could you provide more info on the 22-204? Dies you are using, what 'smith did your chambering, etc? Sounds interesting.

http://forum.accurateshooter.com/index.php/topic,3761408.msg35932748.html#msg35932748

 

[alf]

Alf
Is your stock fiberglass or is it laminated Ice-wood?
Lynn

It's a McMillan Marksman stock.

 

[alf]

A 22-204 pushes the 75 grain A-Max with a BC of .435 at 3050 without leaning on it hard.

A 6BR shooting a 105 A-Max with a BC of .500 at 2950 has an IDENTICAL drop out to 800 yards.

 

[superlight93]

The boltface can be opened up to a BR. Buy if you want to go 6 x 47, it should be a good round.

Good advice on the boltface opened up .

BAD ADVICE on saying it would be a good round, Not with a 8 twist barrel!

The 6br with an 8 twist isn't a good idea? Then the 2 I have built and the one I am waiting for a barrel for have been flukes? Or maybe I am misunderstanding.

Read the thread from the beginning and it will make more sense. A 6x47 222 mag with a 8 twist barrel is the BAD IDEA>

 

[jraney]

boy it is good thing you asked about that ol'6br. it must be the absolute
be all to end all of the cartridges. good luck getting the answers you wanted. i personally know nothing about the 6x47 or the 6br but if you want to biuld a 6x47 then biuld it. not trying to offend anybody but i don't understand why a person cannot get an answer to a question without being told to just biuld a 6br. no offense but maybe not everybody wants a 6br or wants to shoot 100gr bullets. just my thoughts, really not trying to pick a fight, just like straight answers. almost feels like i am talkin to car salesmen they don't want to sell you what you want just what they want.

 

[lynn]

JRaney
The original poster has a 223 size boltface and that is why he wants to build a 6X47 which is not the same as the new 6X47 Lapua based on a necked down 6.5X47 case.
It appeared to several posters he was only building this outdated wildcat due to the limitations of his boltface size myself included.
A brand new bolt from Kiff runs $106 plus the cost of a new handle and some small assembly fee to get it welded/soldered into place.For roughly $200 he is all set and can sell his old bolt for around $120-$150 so he is only out of pocket $50 and is shooting one of the finest cartridges around rather than an old relic.

Remington 700 Bolt Short Action w/o Handle (Bolt Body Only)



Shown: Short Action, M16 Style Extrator, Std. BF, No Flutes
$106.00

The picture didn't show up but that is straight from the Pacific Tool and Die website.
Lynn

 

[superlight93]

Thanks Lynn for explaining it more clearly so Everyone can understand.

We are here to help someone who Asked for advice.

superlight93

 

[alf]

Alf- Dies you are using, what 'smith did your chambering, etc?

Dies are as simple as to run the reamer in Wilson neck and seater dies. Another option is to get a Type S full length die in 204 and have the hole opened up to accept the 22 neck, then use a 22 cal. bushing.

I own my reamer, so I have had barrels done by a couple of guys.

Performance is on par with a 223 Ackley.

In reality, there's nothing wrong with a plain 'ol 8 twist 223. I've got one in a 17 1/2" Rock barrel, and it'll run 75 A-Max's at 2900 with no sweat. Prairie dogs have died at 850 with it.