New to neck turning; question please

[Dr.Lee]

The cartridge is 6 BR. I am sure this will be the first of many questions.
A simple one first..... Are you supposed to turn all the way to the junction of the neck and shoulder angle and remove the small radius there or stop short of the radius ?
I am sure they are many variations, but a basic starting technique I guess is what I am looking for.
Thanks,
Dr.

 

[Area Man]

I peel a little bit from the radius so that the the transition from neck to shoulder is smooth. They say if you take a little shoulder, it reduces the develpment of donuts.

 

[lpreddick]

most 6mmbr chambers are such that you really don't have to turn necks. i'v done this a lot since i was under the impression that it contributed to accuracy. the blue box lapua 6mmbr brass is so good neck turning may not be necessary...if done poorly and eraticaly it could hurt. the tighest neck i'm aware of is pt&g's .2704 and my loaded neck is .269. i was very hesitant to shoot this one, but "everybody else was doing it", so i did and am deligted. remchester and others may well benefit from turning. the 6mmbr is one of the cartridges that you have to really work at it to make it shoot bad!

 

[P1ZombieKiller]

I turn mine just slightly into the shoulder.

 

[spclark]

Recommended practice is to cut ever so slightly into the shoulder behind the neck surface. Neck-turning cutters come ground with a second cutting edge with this in mind, some brands offer options for the specific angle between edges for the cartridge you're working with.

 

[JRS]

Do you have a tight neck chamber? If not, there is no real reason to neck turn.

 

[P1ZombieKiller]

Do you have a tight neck chamber? If not, there is no real reason to neck turn.

There may not be a NEED to turn, but with a bushing sizing die, IMO you can see an increase in accuracy if youhave the necks turned uniformily.

 

[CatShooter]

Do you have a tight neck chamber? If not, there is no real reason to neck turn.

There may not be a NEED to turn, but with a bushing sizing die, IMO you can see an increase in accuracy if you have the necks turned uniformly.

If the neck is a no turn neck, and your brass is garbage, then you only need to skim cut it, in which case, there is no need to worry about how far into the shoulder you cut, cuz you don't cut there.

If you have a no turn neck, and Lapua brass, you are wasting your time turning the neck.

 

[diego-ted]

It is my understanding that the difference in thickness of the brass at the neck causes uneven neck tension? So even in a no turn chamber there is a gain to turning the neck for even tension. Please correct me if I have this wrong.

Diego

 

[P1ZombieKiller]

It is my understanding that the difference in thickness of the brass at the neck causes uneven neck tension? So even in a no turn chamber there is a gain to turning the neck for even tension. Please correct me if I have this wrong.

Diego

In my opinion.... yes. But I have to agree with Cat if the gun is a hunting plinking gun, their may be little gained.

 

[JRS]

It is my understanding that the difference in thickness of the brass at the neck causes uneven neck tension? So even in a no turn chamber there is a gain to turning the neck for even tension. Please correct me if I have this wrong.

Diego

True, but, even neck tension will be dictated by the inside of the case neck. If the ID is true, you have no problems.

 

[Dr.Lee]

this is a no turn chamber in a 600 yd bench gun.

 

[artbosco]

Just kiss the junction. Some folks use a 1/32" kiss. Some use slightly more, some slightly less. You don't need much. Take a gander at this: http://www.accurateshooter.com/technical-articles/neck-turning-basics/ and this: http://bulletin.accurateshooter.com/2007/10/neck-turning-tip-match-your-cutter-angle-to-the-shoulder/ Wes has a great picture posted. Take a good look at it.

 

[JRS]

this is a no turn chamber in a 600 yd bench gun.

Use LAPUA or NORMA brass, load and shoot When/if you want to turn necks to evaluate a difference in accuracy, go for it 8)

 

[Dr.Lee]

Thanks for all the replies and help, guys.

Dr.

 

[lpreddick]

use the scientific approach...turn 10 cases and no turn 10, load and shoot. a turned neck will have slightly less neck tension, so you have introduced another variable. if the groups are identical, you have your answer. lapua 6 br brass is so good turning may be a waste, as noted. i'v gone so far as to neck ream attempting to get as uniform neck thickness as possible...probably a waste of time.

 

[Gene75]

JMO on this I have a standard spec chamber in my 308win heavy barrel, I run Lapua brass and I turn the necks just enough to uniform them to keep even neck tension on all the necks, I have noticed a difference in accuracy and my ES across the crony, IMO the more uniform you can keep you brass, charge weights and all the other elements that go along with building quality ammo for you rifle needs to be done if that's what your looking for? but here again as stated it my or not make a difference? but if your goal is to reach as much accuracy and uniformity as possible for what you have I can't see this hurting unless you remove to much! JMO ;D