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To neck turn or not

moe africa

Hi all
Im currently running a howa 1500 in 6.5 creedmoor
I've been measuring my fireformed brass
And it has a Neck of .295
It requires some force to pop a bullet in a fired case
My loaded round OD is .292
Would i benefit from turning my necks down ?
 
moe africa said:
Hi all
Im currently running a howa 1500 in 6.5 creedmoor
I've been measuring my fireformed brass
And it has a Neck of .295
It requires some force to pop a bullet in a fired case
My loaded round OD is .292
Would i benefit from turning my necks down ?
Click to expand...
Probably. So, if your brass wall thickness is .014 (which would give you a loaded round diameter of .292), taking even .0005 off it might be enough to give you the right clearance.
 
I prefer a K&M polished mandrel. You use it before seating the bullets. The reloading die may be sizing that neck down too much..
 
Bart Sauter just whipped us the second year in a row shooting at the Tack Driver III shooting no turn chambers. 6 BRA last year and a 6 PPC this year. I have chambered a lot of no turn 6BR barrels and had no complaints about accuracy. I don't think it's necessary except for an all out BR rifle. You do need enough neck clearance though or you could have some inconstancy.
 
I am in this same boat. I am wondering if I should turn my 6.5 cm necks. I’m strictly shooting off the bench for groups. I shoot Hornady brass , my bullets won’t even come close to dropping in a fired case.
 
moe africa said:
My sized case OD is .290
Click to expand...
Sooo, if this rifle has a factory chamber, IMO you would benefit by turning the necks to where there is a little not turned, turn to where there is about 80-90% of the neck turned. Just a little unturned This should give you enough clearance to work with and still be able to achieve good neck tension and have (hopefully) concentric loaded ammo. Completely deburr inside and out!
Be sure to set the cutter to just kiss the shoulder!
Good Luck. Let us know how this goes.
 
moe africa said:
Hi all
Im currently running a howa 1500 in 6.5 creedmoor
I've been measuring my fireformed brass
And it has a Neck of .295
It requires some force to pop a bullet in a fired case
My loaded round OD is .292
Would i benefit from turning my necks down ?
Click to expand...
Does your fired brass measure .295"? If so you have a .296" neck which is the SAAMI spec. .002" clearance a side is fine.
 
DaveTooley said:
Bart Sauter just whipped us the second year in a row shooting at the Tack Driver III shooting no turn chambers. 6 BRA last year and a 6 PPC this year. I have chambered a lot of no turn 6BR barrels and had no complaints about accuracy. I don't think it's necessary except for an all out BR rifle. You do need enough neck clearance though or you could have some inconstancy.
Click to expand...
Shooting a no turn chamber and not turning brass are 2 different things. Just because you have a no turn chamber doesn't mean you haven't turned brass. Now for my opinion...neck tension, even consistent neck tension is everything. No factory brass will give you this without work...so to say you won the world on a no turn chamber means nothing...you would be better off asking Don Nielson or Pat at PMA TOOL, why their tools cut to .0002...and then sit and think about it. How much you cut depends on more than just chamber size.
 
When you eject a case by just working the bolt, the neck will hit its side/edge on the way out, making the neck a little out of round. THIS WILL make a bullet a little hard to insert back in the fired case. Take your finger and place on the side of the case when it starts to exit the chamber. Keep enough pressure on the side of case to keep it from hitting inside of action causing the slight out of round.

Frank
 
I've been moving more and more toward no-turn chambers for several years now. The target tells us all that matters. I've seen very few instances where turning necks gave better results in match results, really none..frankly and my own results mimic this. No harm in minimally cleaning up neck(or mostly) if you still have desired neck tension but the other side of that is...did I waste my time or can I definitively see improvement on target and in the final match results. This is coming from someone who also used to believe that to be serious about being competitive, we had to turn necks. My results simply have proven otherwise. Ultimately, like many things, if you BELIEVE it matters, then it really does matter, but proving these things only happens with years of doing it both ways, which I have done. I believe that my time is better spent learning when NOT to pull the trigger and that any benefit of turning necks or not, I'm convinced is way less important, if it's even of benefit at all. I truthfully have come full circle on this after many years of believing otherwise, and I plan to do mostly no-turn stuff going forward. Mind you, this is full blown national level BR. If I think there is an advantage to doing anything, I will do it.

Too tight a fit is way more prone to give problems than too much clearance. The trend for the past few years has been for a little more clearance and again, my results confirm this to me. The only down side I can see is working brass a tad more work hardens the neck sooner..slightly. With the popularity of annealing, that should cure that aspect of it.
 
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There is something missing..
When you say "pop a bullet in a fired case" are you talking about pushing bullet bearing through the neck-shoulder junction (donut area)? Have case mouths been chamfer'd to accept bullets?

If you actually had 3thou difference between fired neck OD and loaded neck OD, that might as well be 3 miles of clearance to a bullet. There would be no resistance in re-seating until neck sized.
 
MSS said:
My opinion is no need for most to neck turn. It’s also expensive and time consuming. Buy good brass like Lapua and go have fun shooting!
Click to expand...
and that's the reason you get a "no turn neck chamber".
More time shooting and less time messing with turning case necks. ;)
If you're NOT competing, don't turn.
All you're getting is a thinner neck that expands easier when seating a bullet. Could be a problem down the road? Once turned and all? :oops:
 
I have had 3 boxes of Alpha OCD and it is no different than Lapua. These were measurements taken today on a new box of Alpha. First off Alpha has thin necks. 2 boxes in last week different calibers. Lapua is as inconsistent. See for yourself. This is the same piece of brass approximately turned 180 degrees on measurements
 

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