Rounds not chambering

wood973

wood973

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I just picked up a mossberg mvp lc and went out to do some barrel break in. Since I already reload for my norc m305, I decided to use some of those rounds as it's what I already had loaded up. I found about half of them wouldn't allow me to lock the bolt down so I only ended up firing 5 round.

From my understanding, this is caused by the tighter chamber on the bolt rifle (We all know the norc chambers are a little sloppy) and that I need to bump the neck down a little bit. My question is, is this done by just screwing in the die a little more during sizing?

I'm new to this precision reloading as all my experience is mass production for pistol and AR. My current press is a lee turret with Lee dies. A single stage is planned for the future for this rifle but this is what I have right now. Any help would be appreciated. Thanks.
 
I would measure the length of the brass with a caliper and check that with your reloading manual. If they're to long then you'll need a case trimmer to get them back to spec. Hope that helps.
 
Cases were all trimmed to proper length.

My intent is to have dedicated bolt gun brass. Which will be fire formed and only neck sized. But to get that way, I need to start with brass that's been sized. So to bump the shoulder down, is it just turning in the die a little more?
 
wood973 said:
Cases were all trimmed to proper length.

My intent is to have dedicated bolt gun brass. Which will be fire formed and only neck sized. But to get that way, I need to start with brass that's been sized. So to bump the shoulder down, is it just turning in the die a little more?
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Well that's as far as my advice goes then, all my bolt guns I set the dies up as it says in the manual and have never had an issue. I would assume you would turn the die in a touch to get that shoulder pushed back that little bit more.
 
Just watched a few youtube vids and that's what they said, just screw it in a little more. Also looks like I need to order a case gauge to properly measure the shoulder without having to chamber every casing in the rifle.

Thanks for the help guys.
 
wood973 said:
Just watched a few youtube vids and that's what they said, just screw it in a little more. Also looks like I need to order a case gauge to properly measure the shoulder without having to chamber every casing in the rifle.

Thanks for the help guys.
Click to expand...

Keep turning it down until the bolt closes easily. Your going to have to size and check size and check.
 
Make sure the die touches the shell holder when the press handle is all the way down. It can't go anymore than that. If it still doesn't fit there could be a bulge at the base of the brass. You'll have to get a bulge buster or newer brass.
 
doc25 said:
Make sure the die touches the shell holder when the press handle is all the way down. It can't go anymore than that. If it still doesn't fit there could be a bulge at the base of the brass. You'll have to get a bulge buster or newer brass.
Click to expand...

Well that is one way to make sure the case is sized but often that will create excessive head clearance on the loaded round. I would prefer to work down to that level of sizing if required.
 
The brass formed in the sloppy norc chamber needs to be worked back to its spec size. Trimmed and full sized back.
Id separate brass from that gun and not use it for your rig.
 
wood973 said:
I just picked up a mossberg mvp lc and went out to do some barrel break in. Since I already reload for my norc m305, I decided to use some of those rounds as it's what I already had loaded up. I found about half of them wouldn't allow me to lock the bolt down so I only ended up firing 5 round.

From my understanding, this is caused by the tighter chamber on the bolt rifle (We all know the norc chambers are a little sloppy) and that I need to bump the neck down a little bit. My question is, is this done by just screwing in the die a little more during sizing?

I'm new to this precision reloading as all my experience is mass production for pistol and AR. My current press is a lee turret with Lee dies. A single stage is planned for the future for this rifle but this is what I have right now. Any help would be appreciated. Thanks.
Click to expand...

In a Norinco chamber, the brass is going to grown in width and length. if you are using a Lee FL sizing die, it should bring the case back to min spec. If things are tight to chamber, consider:

-more or better lube

-Turning your die lower so the SH will meet it long before the press lever goes to full down. There can be quite a bit of spring in a turret press.

If the brass still is stiff to chamber, consider brand new brass as things have swollen beyond the ability to size. Yes, you can take some material off the bottom of the die to push the shoulder back even more BUT you better measure to make sure it is the shoulder that is too long vs other parts of the case that are fat.

I would personally, not bother as oversized cases do not like being fireformed again and case splits/cracks are likely.

If you need some better priced brass to start, I can certainly help with Win and PRVI. Given how expensive ammo is to make and shoot, a few dollar on new brass is a good thing.. besides, you can't shoot the bolt brass in the norinco again or it will split.

So keep the brass for each rifle separate and enjoy

Jerry
 
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