CLEANING INSIDE CASE NECKS

[J&J Custom Rifles]

thanks for all the replies

 

[Bradley Walker]

Derek,
In that case I agree 100% with Tim and you, I use the same process except I use a rcbs case prep station with the Montana nylon brush, thanks for clearing the montana extreme thing up for me I was definitely thinking solvent
Wayne.

I tried this. I even BUFFED the inside of the case neck using polish. It had the 2nd smallest effect of all factors I tried for seating bullets (including dry lube, painting moly lube, painting graphite lube, etc among others---the first was dry lube which appeared to do nothing at all). I found that the greatest factor for effecting seating force is (by far) the amount the neck is sized, and the seating force goes through the roof at .002" of interference.

At .0005" of interference (unturned, full thickness Lapua necks) I can nearly seat the bullet with the Wilson die by pushing it with my hand, which I figure is about right. My groups have agreeing with me also...

Bradley,
If that is working for you my friend,...don't change a thing!! I agree with you on less tension
Wayne.

Tumbled brass after ultrasonic cleaning also has lower seating tension. I assume from the polish/corncob still left in the case.

 

[bozo699]

Derek,
In that case I agree 100% with Tim and you, I use the same process except I use a rcbs case prep station with the Montana nylon brush, thanks for clearing the montana extreme thing up for me I was definitely thinking solvent
Wayne.

I tried this. I even BUFFED the inside of the case neck using polish. It had the 2nd smallest effect of all factors I tried for seating bullets (including dry lube, painting moly lube, painting graphite lube, etc among others---the first was dry lube which appeared to do nothing at all). I found that the greatest factor for effecting seating force is (by far) the amount the neck is sized, and the seating force goes through the roof at .002" of interference.

At .0005" of interference (unturned, full thickness Lapua necks) I can nearly seat the bullet with the Wilson die by pushing it with my hand, which I figure is about right. My groups have agreeing with me also...

Bradley,
If that is working for you my friend,...don't change a thing!! I agree with you on less tension
Wayne.

Tumbled brass after ultrasonic cleaning also has lower seating tension. I assume from the polish/corncob still left in the case.

You may have something there.
Wayne.

 

[CaptainMal]

Size with spray lube and some gets inside the necks. After de-burring the mouth I run it over a small rod jammed into one of my reloading presses and covered with a rag. One quick turn, quick clean and done. Move the rag a bit when it gets real dirty. No buying a brush or dealing with it getting dirty.

Small rod and an old t-shirt...that's what it takes.

 

[Flouncer]

What is the tension ?

Related question then, is, are there any threads here or recommended reading on measuring the force required to unseat the bullets or the consistency of that force ? i.e actual measurements ? I was told many years ago "you should be able to hold the bullet against your waist and by leaning into the loading bench unseat the bullet."

I had to unseat my first 6mm bullet with the inertia hammer and it was a loud drum solo.

 

[mikecr]

Just go to main forum index and search 'seating force'
http://forum.accurateshooter.com/index.php?action=search2

 

[Flouncer]

Thanks Mike. Did the search. It opened another can of worms, apparently.