Is 0.005 neck tension ok

[LC 6.5 Shooter]

Ive got a .266 bushing and my load lapua 6 creed with a 115 dtac measure .271”. So is 0.005” neck tension too much. I believe the redding recommendation is 0.002”. Just seeing if I should purchase a different bushing prior to resizing.

 

[mdmp5]

Yeah get a bushing that gives you 1-2 thousandths. In your case, 269-270

 

[D_TROS]

Even tho 1-3 is considered ideal in BR applications (and so we adopted it), there is no science saying one or the other UNLESS you happen to notice it during rifle load up which is more rare. 1-3 or whatever you brass thickness allows, does indeed work more than not and not over work your brass.

5 is considered high BUT is fine if your rifle shoots fine.

Some BR guys will fine tune with different tensions. Majority of tests ive read and done myself show negligible diff from 1-5 and that's the most Ive done.

The biggest concern with over sizing will be brass wear if you over size too often, but with annealing, your primer pockets will go before anything else.


GL
DT

 

[Yerman]

I would run an expander mandrel after you are done sizing. By only using an outside bushing, if there are inconsistencies in your neck wall thickness (even if you neck turn), those inconsistencies are transferred to the inside of the case and onto you bullet.

I use the mandrels that are used for neck turning so you gat about 2 thou once its all said and done.

I actually just ordered a pilot for my K&M so I can turn down my 300NM brass. I'm trying to get ES and SD down so I'm going to turn down the necks and use an expander mandrel so I can get as consistent as possible on my handloads.

These are the ones I use...if you do this, make sure you order the right expander mandrel body for 6mm.

STAINLESS STEEL NECK TURNING MANDRELS | Brownells

Sinclair stainless steel neck turning and expander mandrels for 17 through 50 caliber cartridges are turned from high grade stainless steel on precision turning centers. Turning mandrels are sized .002 inch under bullet diameter and expander mandr...

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749011715 | Brownells

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[Steel head]

At about that level you can start denting target bullets and abusing expensive bullet seating dies.

 

[straightshooter1]

Ive got a .266 bushing and my load lapua 6 creed with a 115 dtac measure .271”. So is 0.005” neck tension too much. I believe the redding recommendation is 0.002”. Just seeing if I should purchase a different bushing prior to resizing.

The thing that I've seen with my reloading at neck tensions at .005 or so is that the amount of seating force it takes to seat a bullet induces some unacceptable bullet runout. And if the neck irregularities are pushed to the inside of the neck by the die (bushing or not), even more runout is induced due to the tighter seating force. .002 neck tension or less along with annealing I'm able to get quite good results in terms of consistent seating depth and runout.