6 Dasher no turn neck diameter

[KWeigel]

What is the standard dimension for a no turn neck using blue box lapua brass.

 

[johnmyers]

Kiff's blue box reamer is .2704

 

[falconpilot]

Kiffs .2704 is too small in my opinion. There are several threads on here talking about this. Blue box loaded with measure .268-.2685 with 105 hybrid. Brown box will measure .269-.2695 with same bullet. Your blue box will also blow out 10-15 thousand short (1.535-1.540 range)than the brown box.

Perfect reamer for blue box....272 neck, 1.550 overall length. Free bore .125-.150 ...

 

[ShootDots]

Kiffs .2704 is too small in my opinion. There are several threads on here talking about this. Blue box loaded with measure .268-.2685 with 105 hybrid. Brown box will measure .269-.2695 with same bullet. Your blue box will also blow out 10-15 thousand short (1.535-1.540 range)than the brown box.

Perfect reamer for blue box....272 neck, 1.550 overall length. Free bore .125-.150 ...

I am in agreement with FalconPilot.. I ordered a reamer from PT&G (6 Dasher) and it is a .271 neck, 1.55O.A.L. and .155 Freebore... I am still waiting on my Pierce Action (should be here in a week or 3) and my Dasher will commence building. But I made the decision on this reamer after MUCH consultation with several people>> AND from observations stemming from my first Dasher.. However, I have turned my necks for a 1K neck tension fit, using a .266 reamed die..

 

[Alex Wheeler]

An extra thou or 2 clearance wont hurt your accuracy, a thou too tight will.

 

[falconpilot]

At Perry last year, I shoot all my old brass, which was turned to measure .265 loaded rounds in my new .273 chamber. That was 8 thous total clearance. Gun shoot great.

 

[stool]

there is a big difference in cmp/dcm "accuracy" and benchrest "accuracy"
1/2 moa is good in cmp/dcm and is barely an also ran in benchrest....

discipline managed answers and questions work best....

At Perry last year, I shoot all my old brass, which was turned to measure .265 loaded rounds in my new .273 chamber. That was 8 thous total clearance. Gun shoot great.

 

[falconpilot]

My Dasher with these cases will consistently shoot in the 1-2" inches at 600, and 3-6" at 1000 yards. That is better than 1/2" MOA. The gun and cases are capable. Most of the time, I'm not.

For that matter, I believe if you'll take the time and do a search, you'll find that several national IBS records have been shot with no turn necks..

 

[stool]

the point was not "no turn necks",
but the gross clearance you claim....and the accuracy you claim at the same time.
if you can "consistently shoot in the 1-2" inches at 600, and 3-6" at 1000 yards" with .004 clearance per side,
you are shooting the wrong game.

My Dasher with these cases will consistently shoot in the 1-2" inches at 600, and 3-6" at 1000 yards. That is better than 1/2" MOA. The gun and cases are capable. Most of the time, I'm not.

For that matter, I believe if you'll take the time and do a search, you'll find that several national IBS records have been shot with no turn necks..

 

[falconpilot]

Geezeee...what a charmer : I edited this post as you don't deserve the response..

You're kind of like wrestling with a muddy pig...the pig enjoys it, you are going to get dirty, and you always come away smelling like shit...

 

[Alex Wheeler]

the point was not "no turn necks",
but the gross clearance you claim....and the accuracy you claim at the same time.
if you can "consistently shoot in the 1-2" inches at 600, and 3-6" at 1000 yards" with .004 clearance per side,
you are shooting the wrong game.

My Dasher with these cases will consistently shoot in the 1-2" inches at 600, and 3-6" at 1000 yards. That is better than 1/2" MOA. The gun and cases are capable. Most of the time, I'm not.

For that matter, I believe if you'll take the time and do a search, you'll find that several national IBS records have been shot with no turn necks..

Stool, can you please explain how .008" of clearance around the neck harms accuracy?

 

[savagedasher]

What is the standard dimension for a no turn neck using blue box lapua brass.

My new cases are .267 loaded my fired cases are .270 with a .2704 reamer That tells me a .2704 reamer is fine. That is .0004 spring back. Larry

 

[6fatrat]

Geezeee...what a charmer : I edited this post as you don't deserve the response..

You're kind of like wrestling with a muddy pig...the pig enjoys it, you are going to get dirty, and you always come away smelling like shit...

+1

 

[tonedaddy]

my 6br has a 272 neck. I do not have to turn Lapua brass. I use a 268 bushing to size them.

 

[Alex Wheeler]

The necks job is to release the bullet consistently. The bullet is aligned in the chamber by the throat, which is only a few ten thousandths over bullet diameter. I have tested neck clearance at 1k, so has another poster here. Our results matched. Stool, what were your results?

 

[Barlow]

Mine is a .271 OD and .267 loaded OD. Barlow

 

[falconpilot]

Just for clarification. I have many groups as stated with the 8 thous clearance brass. After I switched to the 273 neck, I had a lot of fairly new brass that I had turned to run in my .269 chambers, and these loaded rounds measure .265. I'm also shooting no turn brass that gives me 4-5 total clearance, and it does not shoot any better than the other brass. It all shoots with the right right load work up.