Not Sizing Cases?

R

RBD

Guest
Does anyone not size match cases from a tight neck chamber?

My twice fired cases will chamber easily, and, apparently, have plenty of neck tension to hold a bullet.

RBD
 
It's entirely possible to shoot indefinitely, like 10-20-30 firings or more using this method as long as you shoot 'light' loads like those found in loading manuals and don't screw up and shoot a hot one.

Keep your lugs greased though..... every 10rds or so GREASE THOSE LUGS!!!

For many yrs this was to go-to method of loading for a number of BR competitors. Shooting around 3250 with a PPC/BR case and Match bullets will allow this.

Getcherself fitted Lyman powder dipper and you can go doggin' all day with just the powder scooper and a pocket full of bullets and primers. ;)

al
 
primer pockets

I have a simple question if you guys dont mind. I know that this goes against ALs prefered method - but if I fireform with a light load will my primer pockets stay tight for a long time? Is the converse true?

Thanks!

Dirk
 
DirkTejan said:
I have a simple question if you guys dont mind. I know that this goes against ALs prefered method - but if I fireform with a light load will my primer pockets stay tight for a long time? Is the converse true?

Thanks!

Dirk
Click to expand...

Dirk,

If you fireform with a light load and shoot using only light loads then your primer pockets will never loosen.

IMO if you plan to shoot heavier loads then it helps to wait until the case is somewhat work-hardened.... once its work-hardened it'll resist primer pocket expansion better. Also IMO slapping the case a little harder work-hardens it quicker but more importantly work-hardens it STRAIGHTER. There is a good chance that if you fireform with a too light load the case will only partly pop out. Subsequent shots will do little to straighten it because it's now work-hardened and will resist. The fact that I believe in SMAKKING the case straight in that first fireform shot is kind of unrelated..... the case will work-harden no matter what, over time.

AGAIN IMO, you only get one chance to make a straight case and this can only occur on the fresh case. The balancing act is getting it to fully pop out straight without expanding the primer pocket.

Once a crooked case, always a crooked case..... in Alinwa's World. :D

"make it once, make it right, enjoy"

I don't know what the converse is???? Do you mean, "If I fireform with a heavy load, will the primer pockets stay loose for a long time?" .... Once the primer pockets are loose, they stay loose.

al
 
Bruce
On one of my 300 Ackleys I do it exactly as you have described.My bullets click into place in the neck and accuracy is very good.Are you coming up for sundays match?
Lynn aka Waterboy
 
Thanks, al...

I neglected to thank you for your response, al-

Thanks.

I finally figured out I could use a neck sizing die without a bushing to de-cap the primers, but decided not to.

I'd had very good luck full-length sizing this round--6x47--with a standard Forster die.

So I decided to do that.

I used a go-gauge to set up the die, as the shoulder clearly didn't need to be set-back, but... after full-length sizing I tested the rounds, and it took just a little pressure to chamber them.

I put some magic-marker on a case, chambered it, and it didn't really show me where it was rubbing when chambered.

I can only surmise that the shoulder is being set back, slightly, and that is widening the cases.

My decision to full-length size was empirical--this had worked well for me before--and I can only hope it will continue to work in the future.

RBD
 
Bruce
If you didn't size them so that the full length die set the shoulder back your full length die squeezed down the area around the web and this actually made your cases longer.
If you have a case that hasn't been sized at all measure from the casehead to the shoulder not the mouth.Run the case into your die and measure it again.Chances are that it is now longer to the shoulder.
When you set the shoulder back you make the neck longer.
Lynn aka Waterboy
 
More Enthusiasm Than Experience...

Thank you, Lynn-

This explains a lot.

While I don't mind camming my cases in just a little--isn't this going to align it better with the bolt face?--it would seem I'm sacrificing case life.

I also suspect that one of the reasons I've done so well with full-length sizing is that my rifle just likes this specific neck tension.

If I'm lucky, the targets will tell me what I need to know.

RBD
 
thanks Al

"I don't know what the converse is???? Do you mean, "If I fireform with a heavy load, will the primer pockets stay loose for a long time?" .... Once the primer pockets are loose, they stay loose."

Haha! true!

Thanks- I have a 6XC that has VERY tight primer pocket brass (Norma) and I have an AR-15 that has very loose primer pockets real quick.

thanks again.

Dirk
 
Bruce
I have full length sized my 6BR brass and I've also just neck sized it.I don't buy the story that your brass needs full length sizing each shot or that it will help accuracy in any way.
I have 10 years worth of targets to look at and neck sizing only hasn't shown me any bad ju ju at all.
On the other hand I have two barrels that were installed by a top notch gunsmith and full lengtrh sized after each firing and they are both duds.

I took the decapping pin out of my Redding neck sizing die and my father thought it was the seater die.Apperantly he distinguishes the two dies by looking for the decapping pin because he can't read the tiny writing.He seated around 200 pieces of 6BR ammo using the neck sizing die by mistake and set a heavygun small group record using that ammo.Don Nielson has since beat that record.I used the remaing ammo to shoot sub 3.5 inches at a 1000 yard match the next month.
In my opinion if you shoot in good conditions your gun will shoot to your potential.If you shoot in the wind your gun will shoot to your ability to read it or judge it but never to its full potential.If your shooting in good conditions with good bullets and your shooting well that day you will go home a very happy camper.
Lynn aka Waterboy
 
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