Pure accuracy…. 6br vs 6dasher vs 6GT

[hoz53]

You can order 10 reamers of the same spec and they wont all shoot the same. Its not just about the spec but the actual chamber they cut. Variation in reamers causes this. Its easier for a gunsmith to identify a really good reamer because you see it doing exceptional across a lot of barrels. If you or someone you know always seems to get really good barrels thats also a sign.

thanks for that

 

[Alex Wheeler]

Can it also be the interaction between the reamer and the specific barrel? I imagine each barrel is slightly different even if the reamers were identical. It would be interesting to see the same barrel blank chambered with both reamers.

I I have not seen anything that would make me think that.

 

[Alex Wheeler]

Alex do you think there's an correlation to reamer design for 3,4,5 or 6 groove barrels?
Or bore and groove or both?

No I don't. If its good in a 4 groove its been good in a 5r. I can think of a couple I have that I do 4s and 5r barrels with often and both are very good.

 

[Fire Dog]

Just a bit off subject,
If you have an exceptional barrel that finally need replacing due to throat erosion, can it be cut shorter and just re-chambered and extend the life of the barrel?

 

[LVLAaron]

Just a bit off subject,
If you have an exceptional barrel that finally need replacing due to throat erosion, can it be cut shorter and just re-chambered and extend the life of the barrel?

Barrels get set back all the time. A word of caution... The throat you're cutting into is hard as rock. The stainless work hardens and the carbon buildup is hard as diamonds. If it's a reamer you really love, I wouldn't do it, personally, unless it was carbide.

 

[Evan]

The groove diameter has also opened up, so cutting a thread or two isn’t as good as cutting 3 or 4 inches to get to pristine barrel again. I had 4 inches cut off a 29” HV chambered 6.5x47 with 1100 rounds down it. Rechambered it again and it is shooting phenomenally with another 700 rounds down it now. Right at the last match (LRBR), I shot 2.8 inches at 1000yd - a personal best during a match.

 

[Fire Dog]

Barrels get set back all the time. A word of caution... The throat you're cutting into is hard as rock. The stainless work hardens and the carbon buildup is hard as diamonds. If it's a reamer you really love, I wouldn't do it, personally, unless it was carbide.

Thank you,
I do have all my own reamers but they are not carbide…
I would really hate to ruin one and have to start over with a new reamer.
Being able to have the same chamber every time I find eliminates a lot of “start up” fiddling as what worked before is usually still working and maybe only a slight tweak is necessary to get things going the way it was before the new barrel.

 

[LRPV]

Just a bit off subject,
If you have an exceptional barrel that finally need replacing due to throat erosion, can it be cut shorter and just re-chambered and extend the life of the barrel?

I’ve had quite a few set back. Some just cut the tenon off and went again, some cut off 3” or so. All have shot as good or better. I do try to do it around 8-900 rounds on Dashers.

 

[Dan Hall]

what A wide open question. For supreme accuracy, hunting deer size game or smaller and REALY easy to load I’d go with a 6BR.
QUALITY BUILD REQUIRED.
try: Lapua no turn brass/reamer spec. 87 Berger VLD hunting, 32.0 gr. Varget. If quality build and ability to shoot. 1/2” or smaller 5shot/ 100yard groups.

 

[tlc2057]

I’ve got the itch to build a target rifle in hunting rifle form. A hunting rifle to shoot small groups first, take game as a secondary purpose. With velocity as a secondary concern which cartridge is considered most accurate/easy to load, or is it a wash?

In the last two years I have had a 6 gt, 22 gt and a 6 dasher built off factory actions. The 6 gt off a tikka 595 action, the 22 gt off a tikka t 3 action, the dasher off a RBLP savage target action. All three was really easy to tune and shoot extremely well all in the .200 or below . The GT is the easiest ticket, cycles in factory guns with out all the Mods.

 

[tdogg]

I have 2 dashers and just built a 6GT. I never had a 6BR.

Both Dashers are very fun shooters. One is a bench gun on a savage target action with a 28 inch barrel and one is built on a Christensen MPR rebarreled with a carbon six barrel. It is now my deer rifle/fun gun. I was shooting a 6 ARC gasser (also a fun gun) as a deer rifle but wanted a little more energy and had all the dasher reloading components.

My 6GT was built because I was gifted 18lbs of H4350 and needed a cartridge that would burn it up as the Dasher wasn't happy and I didn't want to run a drop tube. Thus far the 6gt is performing well and is on par with the dasher but I haven't pushed it hard and probably won't. It is my new PRS rig and will stay on the low node most likely. I really like the AW double stack feeding on the 6gt, it is really smooth.

I think the worst 5 shot group in my OCW work up on the 6gt was .8 inch, without seating depth testing. It should settle in under 0.5 MOA easily. Similar results happen on the Dasher with ease.

Pick one based on your use, the 6GT should be able to hit higher velocity with less barrel wear due to the slightly larger case volume. If you don't need velocity, then they all are performers and all have good components available.

Cheers,
Toby

 

[Lightfoote]

I ordered a 6dasher pre fit a little while back. .120fb alpha reamer. Probably be awhile till I get it but hopefully it will live up to expectations.

 

[Tommie]

Since hunting is in the cards, I wouldn’t sacrifice terminal performance to gain an eighth MOA of accuracy. Dasher, BRX or GT gets my vote.