6x47 opinions

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Re: 6x47 opinions

Post by Bill » 19 Sep 2021, 4:21 pm

mates run a 25 Sharps for work, 75gr at 3170fps. 87gr at 2990fps, Tikka M55.
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Re: 6x47 opinions

Post by bigpete » 19 Sep 2021, 7:09 pm

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Re: 6x47 opinions

Post by bigrich » 19 Sep 2021, 7:41 pm

interesting link bigpete . uses standard mags too . hmmmm
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Re: 6x47 opinions

Post by solarpak » 22 Sep 2021, 8:18 pm

Bill wrote:what action are you going to use bigrich, detachable mag or floor plate ?

I think the 6mm's are going thru a renewed appreciation as we lean away from the common as muck 223 :thumbsup:



Bill,
is muck is good :D

Give me the plain Jane, vanilla calibres anyday ........223, 243, 270, 308. 30-06......... not too say i havent shot exotics (like the 7x57 et al.....)
As long as the little projectile end ups where i want thats what its all about - and its goodnight dick!

But the 6x47 is a sweet calibre

C.
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Re: 6x47 opinions

Post by bigrich » 12 Oct 2021, 4:50 am

Okay fellas, I’m committed to this project now. Ordered a 1-8 twist 6mm IBI barrel from the big C last night and a set of 6x45 dies on back order from brownell’s oz. thinking this will be a simple conversation on my t3 laminate tikka, but I’m considering a weatherby/howa for a donor rifle too . Single stack tikka should feed well.
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Re: 6x47 opinions

Post by bigpete » 12 Oct 2021, 7:21 am

I thought you may have bought the 6x47 Remington that was up for sale on used guns
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Re: 6x47 opinions

Post by bigrich » 12 Oct 2021, 8:50 am

bigpete wrote:I thought you may have bought the 6x47 Remington that was up for sale on used guns


No Pete, I like the idea of limitless cheap brass for the 6x45 . I’m not all about velocity with this idea. 87-95 gn projectiles at moderate speed with good accuracy, less barrel heat and long barrel life are the goals. This will probably get more use for field rifle comps at my local range than out in the paddock. I don’t really do any culling work, but I think this caliber will be handy as a general purpose round within its limits
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Re: 6x47 opinions

Post by deye243 » 12 Oct 2021, 12:53 pm

Rich good on you I have been hearing a lot of very good things about those IBI barrels who's the gunsmith you are getting to chamber the barrel.
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Re: 6x47 opinions

Post by johnboy357 » 12 Oct 2021, 1:00 pm

Don't forget your history guys - the .222 necked up to 6mm was done many years ago (1958 ?) by a gunsmith by the name of Arthur Langford (from Broken Hill I believe) - called at the time the 243 Myra - named after the guys wife - Myra. He also had a 250 Myra and I think a .308 Myra - all based on the .222 case. Then for the Martini Cadet owners he did a Rimmed version base on the .222 Rimmed case.
Many thought he was a bit before his time as he also came up with the Myra Extruder - a .22LR fired through a .17 or.20 cal barrel.
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Re: 6x47 opinions

Post by bigpete » 12 Oct 2021, 1:33 pm

johnboy357 wrote:Don't forget your history guys - the .222 necked up to 6mm was done many years ago (1958 ?) by a gunsmith by the name of Arthur Langford (from Broken Hill I believe) - called at the time the 243 Myra - named after the guys wife - Myra. He also had a 250 Myra and I think a .308 Myra - all based on the .222 case. Then for the Martini Cadet owners he did a Rimmed version base on the .222 Rimmed case.
Many thought he was a bit before his time as he also came up with the Myra Extruder - a .22LR fired through a .17 or.20 cal barrel.


He also came up with at least 2 variants of what is now the 17hmr.....none of which really has that much to do with bigrich and his 6x45....
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Re: 6x47 opinions

Post by bigrich » 12 Oct 2021, 4:11 pm

deye243 wrote:Rich good on you I have been hearing a lot of very good things about those IBI barrels who's the gunsmith you are getting to chamber the barrel.


jim kent , buffallo gunsmithing at toowoomba . i'll wait till my dies turn up , and take the whole lot to him . most smiths use a 223 reamer , then bore the neck with a 6mm neck reamer . apparently ;) . i'm sure he can manage . he's done a few jobs for me and everything has been spot on :thumbsup:
thanks for your advice on this caliber mate , as stated earlier it'll be mostly used for comps shooting high BC projectiles . i made up a dummy round last night with a 243 neck sizing die and a 95 sst . it looks like a mini creedmore , sorta-kinda :D my waterman magazine will accomodate 3.4" COAL , and he also does T3 mags at 3.6" as well . it should make for a seriously accurate rifle , i'll be curious to see how it goes over 200-300 yards . i'm getting a medium sporter profile barrel , but the first two or three shots are the ones that count :D
i got the same barrel on my model 70 243 and it can shoot pretty good . it was warm last weekend , and groups opened up . i'm thinking i might tweak my load as the barrel has worn in a bit more . i might try some reloader 22 . it burns dirtier than 2209 , but gave better accuracy with heavies in my last 243 barrel . it's my go to powder for 270 win and 6.5 swede as well . 35 gn of 2208 gave me .3' at 100 with 87 vmax last time i loaded those in the IBI 243

reloading for rifles , ya just never quite done :lol:
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Re: 6x47 opinions

Post by bigrich » 12 Oct 2021, 4:13 pm

bigpete wrote:
johnboy357 wrote:Don't forget your history guys - the .222 necked up to 6mm was done many years ago (1958 ?) by a gunsmith by the name of Arthur Langford (from Broken Hill I believe) - called at the time the 243 Myra - named after the guys wife - Myra. He also had a 250 Myra and I think a .308 Myra - all based on the .222 case. Then for the Martini Cadet owners he did a Rimmed version base on the .222 Rimmed case.
Many thought he was a bit before his time as he also came up with the Myra Extruder - a .22LR fired through a .17 or.20 cal barrel.


He also came up with at least 2 variants of what is now the 17hmr.....none of which really has that much to do with bigrich and his 6x45....


thats OK , i'm a history buff and ya never stop learnin' :thumbsup:
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Re: 6x47 opinions

Post by deye243 » 12 Oct 2021, 7:43 pm

bigrich wrote:
deye243 wrote:Rich good on you I have been hearing a lot of very good things about those IBI barrels who's the gunsmith you are getting to chamber the barrel.


jim kent , buffallo gunsmithing at toowoomba . i'll wait till my dies turn up , and take the whole lot to him . most smiths use a 223 reamer , then bore the neck with a 6mm neck reamer . apparently ;) . i'm sure he can manage . he's done a few jobs for me and everything has been spot on :thumbsup:
thanks for your advice on this caliber mate , as stated earlier it'll be mostly used for comps shooting high BC projectiles . i made up a dummy round last night with a 243 neck sizing die and a 95 sst . it looks like a mini creedmore , sorta-kinda :D my waterman magazine will accomodate 3.4" COAL , and he also does T3 mags at 3.6" as well . it should make for a seriously accurate rifle , i'll be curious to see how it goes over 200-300 yards . i'm getting a medium sporter profile barrel , but the first two or three shots are the ones that count :D
i got the same barrel on my model 70 243 and it can shoot pretty good . it was warm last weekend , and groups opened up . i'm thinking i might tweak my load as the barrel has worn in a bit more . i might try some reloader 22 . it burns dirtier than 2209 , but gave better accuracy with heavies in my last 243 barrel . it's my go to powder for 270 win and 6.5 swede as well . 35 gn of 2208 gave me .3' at 100 with 87 vmax last time i loaded those in the IBI 243

reloading for rifles , ya just never quite done :lol:

Yes that's what most smiths do but there is one problem with that excessive neck clearance mine had 0.013" the rifle was capable of a lot better accuracy but not with that much Clearance
The 6MM cartridges neck wall thickness is a lot thicker than a 223 especially after it is necked up just one thing to keep in mind.
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Re: 6x47 opinions

Post by bigrich » 13 Oct 2021, 4:23 am

Yup, I get ya. The free bore is also something to consider. I’ll have to check projectile length to neck length when seated. I’ve necked up 308 to 358 and got excellent accuracy. I was concerned about thinning the neck wall , but it seems to work fine. If I’m lucky my smith might be able to loan a reamer from another well known smith/ barrel maker he sometimes does work for
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Re: 6x47 opinions

Post by bigpete » 13 Oct 2021, 6:04 am

bigrich wrote:
bigpete wrote:
johnboy357 wrote:Don't forget your history guys - the .222 necked up to 6mm was done many years ago (1958 ?) by a gunsmith by the name of Arthur Langford (from Broken Hill I believe) - called at the time the 243 Myra - named after the guys wife - Myra. He also had a 250 Myra and I think a .308 Myra - all based on the .222 case. Then for the Martini Cadet owners he did a Rimmed version base on the .222 Rimmed case.
Many thought he was a bit before his time as he also came up with the Myra Extruder - a .22LR fired through a .17 or.20 cal barrel.


He also came up with at least 2 variants of what is now the 17hmr.....none of which really has that much to do with bigrich and his 6x45....


thats OK , i'm a history buff and ya never stop learnin' :thumbsup:


You might be interested to know,my local gunsmith makes extruder barrels....
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Re: 6x47 opinions

Post by Larry » 13 Oct 2021, 7:34 am

I get a little confused reading this thread as it jumps between 6*47 and 6*45 a couple of times. The 6*47 is in common use in F open competition so Bigrich I think it will suit your comp needs. In Fopen it is used out to 1000yrds but is most accurate out to 600 yrds after that there is some complaints that it gets knocked around by the wind a bit more than the hotter 7mm SAUM.
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Re: 6x47 opinions

Post by deye243 » 13 Oct 2021, 12:20 pm

Larry wrote:I get a little confused reading this thread as it jumps between 6*47 and 6*45 a couple of times. The 6*47 is in common use in F open competition so Bigrich I think it will suit your comp needs. In Fopen it is used out to 1000yrds but is most accurate out to 600 yrds after that there is some complaints that it gets knocked around by the wind a bit more than the hotter 7mm SAUM.

Nope you are confusing the 6x47L we are talking about the original 6x47 which is a 222 Remington Magnum case necked up to 6 mm
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Re: 6x47 opinions

Post by bigrich » 13 Oct 2021, 12:22 pm

Larry wrote:I get a little confused reading this thread as it jumps between 6*47 and 6*45 a couple of times. The 6*47 is in common use in F open competition so Bigrich I think it will suit your comp needs. In Fopen it is used out to 1000yrds but is most accurate out to 600 yrds after that there is some complaints that it gets knocked around by the wind a bit more than the hotter 7mm SAUM.


My “comp” is field rifle and it’s very casual. I’m just looking for a excuse to build another rifle... :P
6x47 requires a 222mag length action which are rare. The 6x47 would require magazine mods more extensive than the 6x45. Yeah, I know it’s not much difference in COL , but sometimes that’s enough for feed problems. Making 6x45 brass is just about free, rather than looking for 222mag or 204 brass.
Yes, I know the title of this topic is “6x47 opinions “, but I changed my mind..... :lol:
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Re: 6x47 opinions

Post by bigrich » 13 Oct 2021, 12:26 pm

deye243 wrote:
Larry wrote:I get a little confused reading this thread as it jumps between 6*47 and 6*45 a couple of times. The 6*47 is in common use in F open competition so Bigrich I think it will suit your comp needs. In Fopen it is used out to 1000yrds but is most accurate out to 600 yrds after that there is some complaints that it gets knocked around by the wind a bit more than the hotter 7mm SAUM.

Nope you are confusing the 6x47L we are talking about the original 6x47 which is a 222 Remington Magnum case necked up to 6 mm


Ahh, yes . The lapua cartridge. Forgot about this one. I’m not too bad, but I don’t have the inclination to do F class. Some fellas seem too serious about it . My comp is a social and fun thing that I do
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Re: 6x47 opinions

Post by Wyliecoyote » 02 Jul 2022, 10:01 pm

I just did two 6x45s on Howa mini actions. Medium profile IBI 8 twist barrels at 24 inches. The loads we are going with is 26 grains of 2206H with the Barnes 85 grain TSX at 2.320" COAL giving right on 2850 fps with no signs of pressure. Accuracy as expected is very good with sub MOA easily attained. 8208 is looking like getting a bit more speed as well as giving less charge compression because of higher load density.
The objective was to specifically use Barnes bullets for sure kills on hogs at night with thermal scopes where brass retrieval is a minor consideration. While the 6x45 will launch 90 and 100 grain pills to acceptable levels, the Barnes just move the cartridge up a caliber in killing capability.
The only issue is brass choice. Winchester, Hornady and ADI run from 92 to 94 grains. S&B runs at almost 104 grains which greatly restricts case capacity and velocity. So when scrounging the range bins for cases, it's best to leave the S&Bs solely for 223 and even then when running Roo loads the load is reduced a full grain of 2208 because of that capacity loss.
Hornady do make 6x45 Remington dies. I went with Simplex 6x47 dies where i had to modify the seating stem a tiny bit to get some of the more streamlined pills to that 2.320". The reamers are off the shelf Manson as this cartridge has become very popular with the AR platforms.
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Re: 6x47 opinions

Post by Wrangler » 10 Sep 2022, 9:04 pm

I think 6x45 or 25x45 would be a great light rifle, no super hot shot but accurate, mild to use with long barrel life.
A 204 ruger case opened up to 25cal is one I’d like to try. 2504
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Re: 6x47 opinions

Post by Wrangler » 10 Sep 2022, 9:06 pm

I think 6x45 or 25x45 would be a great light rifle, no super hot shot but accurate, mild to use with long barrel life.
A 204 ruger case opened up to 25cal is one I’d like to try. 2504
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Re: 6x47 opinions

Post by Border_Bloke » 12 Sep 2022, 3:06 pm

bigpete wrote: You might be interested to know,my local gunsmith makes extruder barrels....


OK sorry to be going off topic but here is the ultimate extruder barrel... a 300 blackout bullet squeezed through a 223 barrel.
Yes it destroyed the rifle, but it did squeeze a .308 bullet through the .223 barrel!
https://youtu.be/RbfIkaNlECo
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Re: 6x47 opinions

Post by Widgeon58 » 28 Sep 2023, 4:48 pm

I have been through this post a few times now and am searching for help on powders to use for a Rem 6 by 47 I am getting built up with, a 1 in 8, twist 23.5 fluted barrel it's on a Howa 1500 action with a detachable magazine, bullet weight 80 to 105. I have contacted ADI and they can't help me with a powder bullet weight beyond 85 grain. I am going to use the rifle predominately for hunting i.e.: fallow and pigs and wish to try some lighter-weight bullets if I can get to stabilize in the same twist.

Ideally, it would be great if I can use the same powder(s) in my 6.5 by 55 Swedish Mauser (M38)
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Re: 6x47 opinions

Post by bladeracer » 10 Oct 2023, 12:00 am

Widgeon58 wrote:I have been through this post a few times now and am searching for help on powders to use for a Rem 6 by 47 I am getting built up with, a 1 in 8, twist 23.5 fluted barrel it's on a Howa 1500 action with a detachable magazine, bullet weight 80 to 105. I have contacted ADI and they can't help me with a powder bullet weight beyond 85 grain. I am going to use the rifle predominately for hunting i.e.: fallow and pigs and wish to try some lighter-weight bullets if I can get to stabilize in the same twist.

Ideally, it would be great if I can use the same powder(s) in my 6.5 by 55 Swedish Mauser (M38)


6x47mm is a necked-up .222RemMag, same as the .204Ruger and has a similar capacity of around 33gn of H2O, fairly small for 6mm - the .243Win is around 54gn H2O, 6.5x55mm is around 57gn H2O. So I would go with faster powders, AR2206H or AR2208, which will work well in both. But if you're chasing velocity then AR2209 (H4350) is generally considered the go-to for the 6.5x55mm.

ADI has loads for the 6x47mm. http://www.adiworldclass.com.au/data-rifle/6-x-47mm But only up to 85gn with the fastest powders - AR2207 (IMR4198), AR2219 (H322) - and AR2206H (H4895) for the heavier bullets. You can certainly get AR2208 (Varget) to work in the 6x47mm but it wouldn't be optimal for lighter bullets, so I would start with AR2206H for both and see if you can get the results you want. For heavier bullets than 87gn you will have to work up your own load data.
ADI's load data for AR2206H is basically:
26.0gn to 28.5gn for 60gn bullets at 2900fps to 3100fps,
26.0gn to 28.0gn for 70gn bullets at 2750fps to 2900fps,
25.5gn to 27.5gn for 75gn bullets at 2700fps to 2900fps,
25.0gn to 27.0gn for 80gn bullets at 2600fps to 2850fps,
24.0gn to 26.0gn for 85gn bullets at 2500fps to 2700fps.

Hornady's data are basically: https://static.hornady.media/site/hornady/files/obsolete-data/6x47mm.pdf
24.6gn to 28.5gn for 70gn bullets at 2700fps to 3100fps,
21.1gn to 25.8gn for 87gn bullets at 2300fps to 2800fps.

So, for 100gn bullets I would expect loads to be somewhere around 22.5gn to 24.5gn making around 2200fps to 2400fps. This is getting very low, so range on live game is going to be restricted. The 100gn Hornady BTSP for example has a BC of .405. If you can launch it at 2400fps it's down to 2000fps by 180m and 1600fps by 350m, so I wouldn't expect much bullet deformation past about 200m.

But for a small capacity case I would want to check the throat and magazine length as they may not be designed to work with the heavier VLD/ELD bullets - you might have to seat them very deeply restricting your case capacity and potential velocity. Hornady used to offer a 100gn RN that might've worked well in it.

There is no issue at all with stabilising shorter bullets, lighter-but-longer bullets, like brass or copper bullets are more likely to be an issue, but a .243" 8"-twist will stabilise bullets up to around 1.300" in length.

In any 6mm chambering I would get some 87gn VMax's and start with those as an all-round bullet.
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Re: 6x47 opinions

Post by Widgeon58 » 10 Oct 2023, 11:49 am

Many thanks, Blade Racer for all that information, this rifle is a project I am working on, it as yet to go to the gunsmith to be built up, but the smith will know in advance the bullet weights I intend to use so throat and magazine length will be discussed before build and I don't aspire to shoot at anything beyond 200 metres.

I am not committed to any particular gunsmith, so recommendations are welcome by all readers. I am based in the Bendigo region but not adverse to go elsewhere, should a gunsmith be recommended
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Re: 6x47 opinions

Post by Widgeon58 » 10 Oct 2023, 11:49 am

Many thanks, Blade Racer for all that information, this rifle is a project I am working on, it as yet to go to the gunsmith to be built up, but the smith will know in advance the bullet weights I intend to use so throat and magazine length will be discussed before build and I don't aspire to shoot at anything beyond 200 metres.

I am not committed to any particular gunsmith, so recommendations are welcome by all readers. I am based in the Bendigo region but not adverse to go elsewhere, should a gunsmith be recommended
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Re: 6x47 opinions

Post by bladeracer » 10 Oct 2023, 12:20 pm

Widgeon58 wrote:Many thanks, Blade Racer for all that information, this rifle is a project I am working on, it as yet to go to the gunsmith to be built up, but the smith will know in advance the bullet weights I intend to use so throat and magazine length will be discussed before build and I don't aspire to shoot at anything beyond 200 metres.

I am not committed to any particular gunsmith, so recommendations are welcome by all readers. I am based in the Bendigo region but not adverse to go elsewhere, should a gunsmith be recommended


If you are building the rifle anyway I would look for information on target shooting forums where people may have already worked out the wrinkles with the 6x47mm (the 6x47mm Lapua is a very different cartridge). I'm not seeing a lot of posts regarding the cartridge after about 2010 so it may be fairly obscure now. It's possible the small capacity (reduced velocity potential) doesn't suit the longer/heavier bullets anyway (especially with the hunter-length barrel) so it may be better to build it for shorter hunting bullets if you're planning field use rather than putting holes in paper. It's not a cartridge that interests me as I use the .243 and just load it down to reduced loads to suit different situations - 2000fps with the 58gn VMax is very pleasant shooting for small targets out to 100m or so, pretty much a heavy .22 Hornet load.

We have family in Bendigo but only venture up there every few years, they prefer to come down to the farm to visit.
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Re: 6x47 opinions

Post by Widgeon58 » 10 Oct 2023, 10:28 pm

I have checked some of the target shooting Web sites and pulled some data from them
As soon as I find it again I will post what I have for comments as soon of the powders I didn't recognise, so will need to know if there are equivalent powders in Australia
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Re: 6x47 opinions

Post by bladeracer » 11 Oct 2023, 10:01 am

Widgeon58 wrote:I have checked some of the target shooting Web sites and pulled some data from them
As soon as I find it again I will post what I have for comments as soon of the powders I didn't recognise, so will need to know if there are equivalent powders in Australia


ADI powders are sold in the US under Hodgdon and IMR brands, but what is currently available here is very limited nowadays, especially as you want the faster rifle powders for the small case capacity. I wouldn't worry too much about chasing load data, you have basic starting points now just with ADI/Hornady data, from that you can work up your own loads very easily.

Do you have a supply of primers already? Without those you won't be loading anything. You'll need small rifle for the 6x47mm and large rifle for the 6.5x55mm. I use AR2206H (H4895) in everything so I would suggest starting with that or AR2208 (Varget), both will work fine in both the cartridges you want to load.
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