Scratching my head please help. 28 nosler

[Kmccord]

Ok That is what I thought. So I have a different issue as the bullet won't even enter the neck on some of the fired cases. Well they will with some pressure but they don't just drop right in like I am used to. Ever seen this before?

That is nothing I have ever seen, have you checked the diameter of the bullets to see if all are the same? Why would brass not expand to the size of the neck in the chamber when fired.. Have you verified the thickness of each neck that will not pass a bullet versus ones that will? I am curious to see and hear what is causing that problem, are all the same brand and lot on the cases? I would sort out all the ones that are fired and allow the bullet to flow in and out of the neck, then I would weigh each case and match those cases that are the same, reload those and see if the group closes.

 

[Colin78]

That is nothing I have ever seen, have you checked the diameter of the bullets to see if all are the same? Why would brass not expand to the size of the neck in the chamber when fired.. Have you verified the thickness of each neck that will not pass a bullet versus ones that will? I am curious to see and hear what is causing that problem, are all the same brand and lot on the cases? I would sort out all the ones that are fired and allow the bullet to flow in and out of the neck, then I would weigh each case and match those cases that are the same, reload those and see if the group closes.

I didn't check the diameter of the bullets but I did try a few of them (175 ELDX) and got the same result. I have not checked the thickness of each neck either. These are all Nosler brass from the same lot. I have some spent brass from some factory Nosler ammo as well as Hornady ammo. I will look at those this evening and see if I see the same in them.

 

[L.Sherm]

What neck dia. is a fired case

 

[Colin78]

What neck dia. is a fired case

Ok, doing some measuring and here is what I'm coming up with

Outside neck diameter = .319.5 to .320 on all cases
Inside neck diameter= .283.5 to .284 on cases that bullets don't drop in
Inside neck diameter= .284.5 to .285 on cases that ballet drops in
Neck thickness = 16 to 18 thou on all cases

 

[L.Sherm]

What does a fired case measure on the outside of the neck

 

[Kmccord]

Ok, doing some measuring and here is what I'm coming up with

Outside neck diameter = .319.5 to .320 on all cases
Inside neck diameter= .283.5 to .284 on cases that bullets don't drop in
Inside neck diameter= .284.5 to .285 on cases that ballet drops in
Neck thickness = 16 to 18 thou on all cases

You sure you did not size the cases that will not slide in? Take a measurement on a case that has been sized.

 

[L.Sherm]

Is it the 319.5-320

 

[L.Sherm]

If you have .018 thick necks.
.284+ .018x2 = .320
You have no neck clearance in your chamber if your necks are .018 thick
Trim them to all to .016 and you will should be good to go.

 

[ResearchinStuff]

If it's not the neck thickness (which it might be), it could be that your chamber is cut just a tad short for how long your cases are. Whats the difference in length on the fired cases between the ones the bullets will and won't drop through the neck of?

 

[Colin78]

Ok so I just went thru a bunch of fired brass, both factory ammo and reloads of several calibers, 243, 6.5cm, 308, 270, and the are all the same. Most of them a bullet will slide right thru the neck but several in each caliber and both factory and reloaded cases don't.

 

[Colin78]

If you have .018 thick necks.
.284+ .018x2 = .320
You have no neck clearance in your chamber if your necks are .018 thick
Trim them to all to .016 and you will should be good to go.

Most are 16 to 17, only a few were 18 and that might have been me not measuring carfuly.

 

[Colin78]

Is it the 319.5-320

Yes that is the outside neck diameter

 

[Colin78]

You sure you did not size the cases that will not slide in? Take a measurement on a case that has been sized.

Positive

 

[Colin78]

And it's just that they don't slide in without any pressure. Some of them are just tight but with hand pressure they will push in.