small ring above belt on .300 win mag

[aebhunter]

I had a new .300 built and am not to a point where I am reloading some of the cases I have shot through it. I noticed that some of them were chambering extremely tight, so I decided to run them through my full length resizer to sort of "start from scratch. Using a Redding full length sizer. After I ran a couple through I chambered and they were a little better, but not great. I also noticed a little ring just above the belt. I then ran a couple through a body only die and bumped the shoulders back, they chamber like butter now, but there is a tiny little ring of brass that actually came off the case...***?

Wondering if my new .300 has a tighter chamber than my old one and I am getting the dreaded "case bulge" above the belt?

Anyone ever dealt with this before? I am not real keen on firing rounds through my gun where I seem to have "manipulated" so much brass.

 

[gohring3006]

Did you start with new brass or ammo thru this rifle, or is it old stock from the previous?

 

[aebhunter]

Did you start with new brass or ammo thru this rifle, or is it old stock from the previous?

It's from my previous gun

 

[gohring3006]

It's from my previous gun

Someone on this forum said one time. "A new rifle deserves new brass".
There is more utility in that statement than novelty.

I would start with new brass or new ammo fired in that particular barrel. That should solve your problem.

 

[aebhunter]

Someone on this forum said one time. "A new rifle deserves new brass".
There is more utility in that statement than novelty.

I would start with new brass or new ammo fired in that particular barrel. That should solve your problem.

I am starting to think that is the route I will go.

 

[FEENIX]

Someone on this forum said one time. "A new rifle deserves new brass".
There is more utility in that statement than novelty.

I would start with new brass or new ammo fired in that particular barrel. That should solve your problem.

IIRC, that was shortgrass!

ADDED:

Yep, found it!

Necking up a cartridge case will make the thickness of the neck wall thinner. You can neck a case down and if it's too thick you can do something about that. If it's too thin you have no recourse. Winchester head stamped .30/06 brass is currently available. That's the direction I'd go if I didn't want to spend the $$$ on 'premium'. New rifle,,,,, new brass.

 

[gohring3006]

IIRC, that was shortgrass!

ADDED:

Yep, found it!

Right on Ed!!!