Quick 6mm's - 6XC, 6x47 and 6mmCM

I have a Model 7 that needs a rebarrel. This has been my main hunting rifle for a few years in 260imp (30degree). I never really got the best out of the case, as it was the thin factory barrel and only a 1:9 twist. I'll look at a full length SA for doing this again. But reckon the Model 7 action would suit one of these shorter 6mm's with a 1:8 or even 1:7.5 in a heavier contour. 243 is a little long to get the best from the reduced length action. I may put the action in a mill yet and open entry from the magwell too.

So the question for you lot is; who is already shooting one of these 6's, what projectile, barrel length and velocity?

I'm thinking down the lines of a 1:8 with a 105 or 108gn from a heavy 24 or most liekly 26 inch with a break. This will be for shooting PRS style match and likely to see the end of some smaller game too.

I’m all about the 6XC. Out of a 22inch barrel I got 2930 with the 105 Berger. Stupid accurate and so easy to shoot comfortably/well.

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Originally Posted by Proudkiwi

I’m all about the 6XC. Out of a 22inch barrel I got 2930 with the 105 Berger. Stupid accurate and so easy to shoot comfortably/well.

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6XC is certainly the way I'm leaning and have been for some time. However, I don't really think there is much between them all.

What is your total overall length?

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Was running 95gr Berger in mine. OAL of 68.2 loaded at 40thou jump, 3100 fps

I found it easy to load and inherently accurate. Sold it to fund the 22BR!

I have just been contemplating a similar build but considered all of those cartridges as well as 6x46 swiss match.. I actually decided on the more efficient 6mm Dasher running 95gr bullets in a 22" 1-9" should get 2950 to 3000fps. Have just ordered the reamers and dies etc.

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Originally Posted by Uplandstalker

I have a Model 7 that needs a rebarrel. This has been my main hunting rifle for a few years in 260imp (30degree). I never really got the best out of the case, as it was the thin factory barrel and only a 1:9 twist. I'll look at a full length SA for doing this again. But reckon the Model 7 action would suit one of these shorter 6mm's with a 1:8 or even 1:7.5 in a heavier contour. 243 is a little long to get the best from the reduced length action. I may put the action in a mill yet and open entry from the magwell too.

So the question for you lot is; who is already shooting one of these 6's, what projectile, barrel length and velocity?

I'm thinking down the lines of a 1:8 with a 105 or 108gn from a heavy 24 or most liekly 26 inch with a break. This will be for shooting PRS style match and likely to see the end of some smaller game too.

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I’m shooting a 6.5CM (24” Howa, 1:8 twist in a GRS stock). I will soon start reloading but with off-the-shelf Hornady 140gr ELD Match, this is what I got at 100m this morning - average velocity 2662fps:
https://uploads.tapatalk-cdn.com/201...6100943df5.jpg

If your main purpose is hunting, then the 143gr ELD-X Precision Hunters or 129gr Interlocks might be a better option to explore if you go down this path.


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Originally Posted by janleroux

I’m shooting a 6.5CM (24” Howa, 1:8 twist in a GRS stock). I will soon start reloading but with off-the-shelf Hornady 140gr ELD Match, this is what I got at 100m this morning - average velocity 2662fps:
https://uploads.tapatalk-cdn.com/201...6100943df5.jpg

If your main purpose is hunting, then the 143gr ELD-X Precision Hunters or 129gr Interlocks might be a better option to explore if you go down this path.


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I've been shooting the 140gn VLDs and 143gn ELD-X at 2770fps in the light 19" barrel for the past few years with good success. If I was going to do the 6.5mm again, it would most likely be in 260imp again, just a heavier, longer, tighter barrel and a medium length action/mag.

Specifically looking at 6mm for this rifle. U have other plans for a dedicated hunting rifle, a 7mm.

Your groups nice, reloading should tighten that up a but and bump your velocity up another 100fps.

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Me mate has a 6xc with a truck axel barrel and it is awesome , nearly keeps up with the 6.5. such an awesome little case .

Quote:

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Originally Posted by janleroux

I’m shooting a 6.5CM (24” Howa, 1:8 twist in a GRS stock). I will soon start reloading but with off-the-shelf Hornady 140gr ELD Match, this is what I got at 100m this morning - average velocity 2662fps:
https://uploads.tapatalk-cdn.com/201...6100943df5.jpg

If your main purpose is hunting, then the 143gr ELD-X Precision Hunters or 129gr Interlocks might be a better option to explore if you go down this path.


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Have you tried the new S&B 140gn yet? I have a few on order, but they will not be here for a week.

Iv had a 243ai for some years now. OAL with the 105 berger is 2.810. Pushing 3180fps from a 23" barrel. Its a remarkably good hunting round but like others if it was a competition gun Id go 6xc for the extra barrel life and lower recoil.

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Originally Posted by Got Juice?

Have you tried the new S&B 140gn yet? I have a few on order, but they will not be here for a week.

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Nope, only different types of Hornady so far. Please let know how you find the S&B 140’s once you get them.


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Quote:

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Originally Posted by janleroux

Nope, only different types of Hornady so far. Please let know how you find the S&B 140’s once you get them.


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Well, I exaggerated some... I have 900 coming in a week...

So here is hoping it is not an epic mistake.

I’m running a 6mm Creedmoor for my comp rifle. 25" 1 in 7.5 twist Bartlein. Using the 110gr Sierra Matchkings in it @ 3,080fps, OAL to the lands is 2.780". Very accurate with basically no recoil (weighs 7.8kg and has a brake) which makes for easy spotting of shots and fast follow up. I’ve had a 243AI, 6XC and 6x47L, the Creedmoor is my favourite so far but that probably has a bit to do with the rest of the setup too.

I just dropped my Sako A2 off yesterday to get a new 1-8" bartlein 2b chambered in 6mm cm fitted will be 22". Really looking forward to having a play. It's intended use will be a hunting/steel shooter. Got a 100 105gr Targex to have a play with as I was really impressed with the 95gr I used in the .243.

Wouldn't want to sell any 260ai dies would ya?

I'm liking my 6BRX. 108's with 33g of 2206H are doing 2900

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Originally Posted by HuntGatherRepeat

Wouldn't want to sell any 260ai dies would ya?

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@HuntGatherRepeat there's a set of dies in the for sale section at the moment.
https://www.nzhuntingandshooting.co....ai-dies-50872/

My 260 improved was not an Ackley. It was a 30 degree shoulder.

I have fitted a 6XC barrel to my Model 7 and wiped up a few loads. Seem like it might work out OK.
https://uploads.tapatalk-cdn.com/201...26325ac4c3.jpghttps://uploads.tapatalk-cdn.com/201...0574eea6a4.jpghttps://uploads.tapatalk-cdn.com/201...c15ebca9d3.jpghttps://uploads.tapatalk-cdn.com/201...3b23ec5a47.jpg

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Quote:

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Originally Posted by Uplandstalker

My 260 improved was not an Ackley. It was a 30 degree shoulder.

I have fitted a 6XC barrel to my Model 7 and wiped up a few loads. Seem like it might work out OK.
https://uploads.tapatalk-cdn.com/201...26325ac4c3.jpghttps://uploads.tapatalk-cdn.com/201...0574eea6a4.jpghttps://uploads.tapatalk-cdn.com/201...c15ebca9d3.jpghttps://uploads.tapatalk-cdn.com/201...3b23ec5a47.jpg

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Looking good mate [emoji106]

When did you start questioning your manlyness?
6mm?[emoji16] What projectiles?

You made the right call it is bucketing down and blowing here.
I might stay wet and go chase some ducks. Seen heaps flying around the river bed while I was bouncing around on the tractor.

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Originally Posted by R93

Looking good mate [emoji106]

When did you start questioning your manlyness?
6mm?[emoji16] What projectiles?

You made the right call it is bucketing down and blowing here.
I might stay wet and go chase some ducks. Seen heaps flying around the river bed while I was bouncing around on the tractor.

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The 6XC will be for shooting some matches and small game. Manliness will be restored in the way of a fast 6.5mm again or 7mm (280AI or long action 284).

Currently trying a 108gn ELD-M, will try some 110gn SMK's too. The 105gn Bergers look good too. At some point, will get some 58gn VMAX going at around 3500fps too, should be a hoot!

Pretty warm and windy on my side of the hill, so that means you must be getting pretty wet!

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Quote:

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Originally Posted by Uplandstalker

The 6XC will be for shooting some matches and small game. Manliness will be restored in the way of a fast 6.5mm again or 7mm (280AI or long action 284).

Currently trying a 108gn ELD-M, will try some 110gn SMK's too. The 105gn Bergers look good too. At some point, will get some 58gn VMAX going at around 3500fps too, should be a hoot!

Pretty warm and windy on my side of the hill, so that means you must be getting pretty wet!

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Bit of tinkering with loads is always good for the soul.[emoji106]
Too wet for ducks even.
Might stay by the fire[emoji16]



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Criterion pre-fit?

What sort of speeds you getting?

Accurate?

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Originally Posted by 300_BLK

Criterion pre-fit?

What sort of speeds you getting?

Accurate?

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Yeah man, Criterion prefit. Took crony this morning, with a flat battery, so not sure in speed yet. But I should be getting close to, at at 3100fps for 105 to 110s. Will go again tomorrow and confirm. Barrel seems to be good!

Putting 5 shots into a half minute with some loads, but still not at max pressure yet and having fiddled around much yet. Loading long and still have 2 or 3mm in the mag.

Using a Model 7 action and the length works out really nice for the 6XC. Need to find a suitable stock/chassis as the fiberglass one I have isnt really suitable to open the barrel channel up for the heavy barrel. I've attacked the original factory stock with the Dremel for now, but need a long term, ridged solution.

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After our chats in the hut I think 6xc will be the next barrel on that 308

In theory, the barrel life of the 6XC is better than the 6mm Creedmore and the complete lack of recoil is very cool. The necks are long and expected life of 2500 to 3000 rounds is a mile better than a 243WIN.

About 39 to 41gn of 2209 in the prefit 26 inch, 1:7.5 is looking pretty nice.

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@300_BLK

Back to the field range today. Climbed a velocity spike between 40.5 and 41gn of 2209. Jumped 100fps in 0.5gn. The accuracy and speed are both there. The flyer was called and was the first shot of the group.

The velocity in the picture was from 41.5gn and there was more felt recoil, the brass is just starting to show a little ejector mark, so the 41gn load is looking the business at 3130fps.

https://uploads.tapatalk-cdn.com/201...5a41f346ca.jpghttps://uploads.tapatalk-cdn.com/201...acef310f4d.jpg

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Pretty good performance from 41 grains of powder.

Will beat that pesky wind at Shenley

Have got my 6mmCM up and going Sako A2 Ken H stock and a bartlein 2b 22" barrel with A-Tec suppressor and NF 2.5-10x42mm
Attachment 117378
Shoots pretty good with the 105gr targex at 2950fps avg
Attachment 117379
But really likes the berger vld hunting 105gr around the same speed!
Attachment 117380
Both loads are running 42gr AR2209 havent really pushed it but I'm happy where its at and really impressed with the A-Tec!!

My 6x47L F-class gun runs 105s at about 3140 from ~39grs of powder, mind you, it is a 30" bbl.

I'd have to say it's far less forgiving than its brother the straight 6.5L. Definitely more finicky to find a load.