dasher neck tension

[skeetlee]

Just out of curiousity how much neck tension are you fellas using on your dasher loads with the heavy bullets? Lee

 

[Bob3700]

Just enough to hold the bullet in the case. Then I seat them .020 long and let the bbl and bolt final seat the bullet.

Works for me with a BRX.

Bob

 

[Flybuster]

In the 6 Dasher?

I am using a bushing that's sized .002 smaller than the diameter of a loaded round.

 

[canderson]

I seat my 108's long and let the rifle do the final seating. I run 0.001 neck tension.

 

[skeetlee]

who else??

 

[ridgeway]

.0008

 

[queen_stick]

using .267 bushing for a loaded .269 non-turned neck. tension is about a thou.

I'll be buying a 266 and 265 bushing in the near future. It's a varmint rig, so I'd like to go up on the tension a bit. Would prefer about 3 thou.

Walt

 

[techshooter]

My loaded rounds come out .2695", and I use a 0.268" bushing for freshly annealed necks, and a 0.267" for necks that have been resized a few times. This keeps the stretch and hence tension approximately the same as they get springier due to work hardening.

 

[skeetlee]

really i was just curious. I use a .268 bushing and i have found no need to change thus far. I seat my bullets to a nice firm fit in the lands. Lee

 

[skeetlee]

Thanks Lynn, good read!! Do you think it is ok to turn .001 off my new brass even though my chamber is a no turn .272? Lee

 

[queen_stick]

Thanks Lynn, good read!! Do you think it is ok to turn .001 off my new brass even though my chamber is a no turn .272? Lee

I was wondering the same thing ???

 

[spclark]

If your end goal is the most accurate loads you can work up, it's worth taking a shallow cut off new brass necks if only to make as uniform as possible the neck wall thickness around the full neck circumference.

Even with "no-turn" chambers, having brass that's got consistent neck tension is worth achieving. You may not have to take off .001", it's enough to adjust your neck turner to cut 50% - 66% of the neck surface.

Taking a cut off the entire neck may be worthwhile if your choice of case brand is particularly uneven in neck wall thickness. At least then you know what you're dealing with.