6BR or 6 Dasher

FLSTFO2

FLSTFO2

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Well I emailed Hirsch precision to tag 1 of the 7mm krieger barrels he has on order, after going over the list of barrels, I ordered a 6mm 1-8 twist as well. The 6mm is new territory for me , never gave it a thought before I ordered the barrel.
Original plan was a 6BR . from what I've read there easy to tune and shoot very well. but then got reading about all the wildcats and the 6 Dasher sparked some interest. Also tunes easy and shoots very well but with more MV.( from what I've read)
Are there a lot of 6 Dashers in use, the articals I've read seem to be from the mid 2000 era.
Are dies hard to find.
Any problems/tips blowing out the brass. Which method work best.
Neck sizes vary from .265 to .272, I don't plan on turning down the necks (lapua brass) so is .272 about rite. ( I guess the gun smith would know )
I have a choice of 2 actions to sacrifice.
A short action Rem 700 currently a 22-250, or a Savage 12 BTVSS also a 22-250. The Rem may not have enough room for the long VLD's ? Any Thoughts?
 
I have a 6xc as mentioned above. Good caliber. Drives the 105/108 at 3000fps. If I were to do it all over again(which I will) I would be looking at both the 6CM (competition match) or the 6SLR(super long range). Both of those will drive the 115 6mms at upwards of 3200fps. Which kinda puts it into 6.5/284 territory. And the rumours have it that the CM can last upwards of 3,000-4,000 rds of accurate life. Recoil is like a .223. And apparently the CM brass is formed by just firing .243 brass in the CM chamber. Very simple!
 
Dasher

Bah, build a Dasher http://bulletin.accurateshooter.com/2012/08/01/ aaand those experimental bullets... Matrix, made in Canada= World record Thk
 
It depends on your purpose for the build. Is it 0-600m, 600-1000m or maybe even 1000+.
I kind of went through the same thing recently. I wanted a .243AI and ended up researching the whole 6mm line of cartridges. Longshot has a good point which is why I decided to go 6 SLR. It is IMO one of the very few cartridges that can utilize the heavier 6mm bullets to the max while getting great accuracy and velocity.

I don't want to sway you in any way but take a real good look at all the 6mm offerings and you may find something that suits your purpose exactly.
 
I just finished building my 6mmCrusader. Plan on shooting 117 matrix bullets hopefully somewhere around 3200-3300 fps. Uses 6mm Remington brass. We shall see.
 
c4pyro said:
I just finished building my 6mmCrusader. Plan on shooting 117 matrix bullets hopefully somewhere around 3200-3300 fps. Uses 6mm Remington brass. We shall see.
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Are you using 7 twist for the 117's, what's the expected barrel life like ?
It doe's sound like an easy setup, can you get dies off the shelf or are they custom.
Man there are a lot of variants of the 6mm. What I'm looking for with this build is a 0-600 yard gun thats easy to tune, does'nt need custom dies or neck turning, good brass life thats easy to fire form and good barrel life.
 
The 6BR as is is an extremely capable cartridge. It will push 105 bullets to 2900+ quite easily and with unmatched precision. The Dasher adds another grain and a half of powder and pushes 105's to 3000. You can also get 115's up to 2800, but the hybrid 105s equal the 115's in performance so it is a moot point.

As to necks, the new lapua brass is thinner in the neck, so a 272 is no longer a "no turn" tight chamber. Need to go down to 270 for that. ALL brass benefits from a clean up turning, so I would personally suggest you look at a 269 chamber and lightly turn your brass.

I have used nearly every 6mm wildcat and normal chambering out there. The Berger 105 hybrid bullet and its outstanding BC was a game changer. The advantage of the XC, SLR, 6X47 Lapua, etc. was the ability to use the 115's. but 105s have the same BC, so there is no advantage to the heavier bullets.

I personally feel, and there are those that will argue, that VLD bullets have a functional maximum velocity. If you push them faster than that maximum, they seem to lose precision. I feel the max for the 105 is about 3050. I have NEVER gotten them faster than that and had them group well.

For the drop in barrel life and the minimal gain in performance going faster is a lost cause, 2900 is a sweet spot for those bullets, and the plain 6BR does it better then anything out there,
 
Yeah I agree the BR is probably the way to go if you are only going to 600. The BR goes out to 1000 without too much problem either although the ability to push the 115s so fast is pretty interesting. I read somewhere that the new pointed Dtacs have a slightly higher BC than the hybrid but who knows. I only have the old Dtacs which I point myself. Berger should get their #### together and build a 115 hybrid! I'm sure it and the 105 would own the 6mm market. There are so many good 6mm calibers out there that I'm sure you won't go wrong. It might come down to bullet availiability and or ease of finding/making brass and dies etc.
 
I have shot against the 6mmBR and Dasher for many years right out to 1000 yards (900 meters) and in the hands of drivers who know what they are doing there is very little advantage going to a bigger 6mm cartridge. The only advantage I can see is from the 800 meter to 900 meter ranges. The 6mm BR's do have a disadvantage at these ranges particularly when the wind is blowing. Then the big 7's and 30's really shine. The extra velocity offered by the Dasher really seems to help to get to 900 meters and the bigger 6's would be an advantage. However under those ranges the plain 6mmBR works fine. Although a lot of people talk about shooting to 900 meters or 1000 yards we don't see them on the ranges where I shoot (and the amount of 1000 yard ranges are very few in Western Canada) so why worry about it. Build a 6mmBR and get involved in the disapline then build a specialized range for the longer ranges. Shoot the 6mmBR for everything else.

However, if you want a magazine feed, then the 6mmBR case doesn't and you must go to the longer case. That is a mechanical issue and not a performance issue.

Steve
 
SteveB said:
I have shot against the 6mmBR and Dasher for many years right out to 1000 yards (900 meters) and in the hands of drivers who know what they are doing there is very little advantage going to a bigger 6mm cartridge. The only advantage I can see is from the 800 meter to 900 meter ranges. The 6mm BR's do have a disadvantage at these ranges particularly when the wind is blowing. Then the big 7's and 30's really shine. The extra velocity offered by the Dasher really seems to help to get to 900 meters and the bigger 6's would be an advantage. However under those ranges the plain 6mmBR works fine. Although a lot of people talk about shooting to 900 meters or 1000 yards we don't see them on the ranges where I shoot (and the amount of 1000 yard ranges are very few in Western Canada) so why worry about it. Build a 6mmBR and get involved in the disapline then build a specialized range for the longer ranges. Shoot the 6mmBR for everything else.

However, if you want a magazine feed, then the 6mmBR case doesn't and you must go to the longer case. That is a mechanical issue and not a performance issue.

Steve[/QUOTE)
The only time the gun would see 1000yds is when the lakes freeze, The gravel pit range gives me 500yds to shoot, or I could set up on a power line cut but access is a pain. From what I've read the 6br and its wildcats don't take a back seat to any thing out to 600+ yrds . I think a 6BR, 6BRX or 6mm Dasher will be a lot of fun to shoot and inexpensive to reload. Every artical I've read can't say enough about there accuracy.
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FLSTFO2;761325 It doe's sound like an easy setup said:
If this is what you are looking for don't look any further than a 6br , I have one and love it easy to tune very low recoil and cheap to shhot with great barrel life.

About 2 weeks ago I tried it one night with no wind ,cloudy so no mirage and at 615 m I got a bit less than a one inch group I was very surprised to say the least.
I don't always get groups like this , yesterday there was so much mirage I could hardly focuss on the center of the target and managed about 3 inches at the same distance .

If you do some reading on other sites about the 6br you will soon learn that it is the one to beat out to 600 unless the wind is really howling then you want to break out the big boomers.

Dont hesitate to build a 6br ,dies ,brass are easy to get and they shoot.
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I really like the straight 6mm BR for the simple reason that on most match 1:8 barrels with a good chamber job done to them you take new Lapua brass, add a CCI 450 primer, a stout load of Varget, & a 105 gr Berger and they usually shoot unreal. That is my experiance.
 
Don't forget the 6x47 lapua.I had my Barnard actioned 6x47 lapua( 0.269 neck) out on Saturday for the first time this year. The worst group I shot at 600 yards was 2.2 inches with the best being 1.1 . I don't think you can expect much better.
 
Canuck525 said:
Don't forget the 6x47 lapua.I had my Barnard actioned 6x47 lapua( 0.269 neck) out on Saturday for the first time this year. The worst group I shot at 600 yards was 2.2 inches with the best being 1.1 . I don't think you can expect much better.
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Been there done that (a couple of times in fact) . It is a hard cartidge to make work well, and in terms of velocity, for 25% more powder, you get about 7% more velocity max. I would go 6XC over the 6-6.5X47 Lapua, or even a plain 6-22-250. The exception would be for varmints. With a light varmint bullet, it can be a hummer.

I still say the 6BR can't be touched for ease of set-up, load development, precision and barrel life. it is accurate well beyond 1000 yards and can even be shot to a full mile with accuracy.
 
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