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Max Online: 16728 @ 03/25/12 08:51 AM
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#6981318 - 12/03/17 05:41 PM Trouble with new Lapua brass
Growley Online   content
Bird Dog

Registered: 10/26/10
Posts: 307
Loc: Aledo, TX
I just ran into an issue that I never have before. Iíve got a Tikka T3 6.5x55 that Iíve been loading for for a few years. Iím currently fire forming a new batch of brass. While at the lease this weekend I noticed that while chambering a round the bolt is difficult to close. Inspected the case and the shoulder is dented. Tried the next 2 in the magazine and got the same result. Iíve shot 80 of this new batch and not had a problem until today. These cases have only been neck sized. So my questions are 1) why do you think Iím running into this issue? 2) do you think theyíre safe to shoot?

Thanks for any help.

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#6981349 - 12/03/17 06:01 PM Re: Trouble with new Lapua brass [Re: Growley]
RiverRider Offline
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Registered: 11/11/07
Posts: 7537
Loc: Wise Co.
Safe to shoot if you can close the bolt without breaking sometthing (as in Remington 700 bolt handles).

When you employ neck sizing, you're going to have to bump shoulders back after several firings either by FL sizing or using a body die.
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#6981355 - 12/03/17 06:05 PM Re: Trouble with new Lapua brass [Re: Growley]
RiverRider Offline
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Registered: 11/11/07
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Then again, after more carefully reading about your experience there could be more to it.

Lack of lubrication can make bolt closure difficult, but not cause shoulder dents. Hmmm...
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#6981362 - 12/03/17 06:15 PM Re: Trouble with new Lapua brass [Re: Growley]
FiremanJG Offline
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Registered: 12/16/08
Posts: 22926
Loc: Wolfe City, TX
Originally Posted By: Growley
the bolt is difficult to close.



These cases have only been neck sized.


The first one is because of the second one.
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#6981375 - 12/03/17 06:22 PM Re: Trouble with new Lapua brass [Re: Growley]
RiverRider Offline
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Registered: 11/11/07
Posts: 7537
Loc: Wise Co.
You are probably right JG...but if I'm reading this right it's new brass, and all the ammo loaded before chambered fine. And there's the "dented" shoulders...whatever that could mean. Kinda sounds like crap building up in the lug recesses creating a tighter headspace situation. I dunno though. Maybe we need more info.
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#6981380 - 12/03/17 06:27 PM Re: Trouble with new Lapua brass [Re: RiverRider]
FiremanJG Offline
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Registered: 12/16/08
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Originally Posted By: RiverRider
Maybe we need more info.


Imma go with that.
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#6981413 - 12/03/17 06:54 PM Re: Trouble with new Lapua brass [Re: Growley]
Growley Online   content
Bird Dog

Registered: 10/26/10
Posts: 307
Loc: Aledo, TX
Yes, itís brand new brass. I neck sized them because a few of the case mouths were dented. Iíve been through 80/100 with no problems. The gun has a total of 260 rds through it. 25 or so since the last cleaning.

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#6981428 - 12/03/17 07:00 PM Re: Trouble with new Lapua brass [Re: Growley]
RiverRider Offline
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Registered: 11/11/07
Posts: 7537
Loc: Wise Co.
I think I'd just bump the shoulders on the next go round and keep on truckin.
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#6981481 - 12/03/17 07:33 PM Re: Trouble with new Lapua brass [Re: RiverRider]
FiremanJG Offline
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Registered: 12/16/08
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Loc: Wolfe City, TX
Originally Posted By: RiverRider
I think I'd just bump the shoulders on the next go round and keep on truckin.


-.002" for sure
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#6981497 - 12/03/17 07:46 PM Re: Trouble with new Lapua brass [Re: Growley]
Growley Online   content
Bird Dog

Registered: 10/26/10
Posts: 307
Loc: Aledo, TX
Ok thanks guys. Iím going to pull the bullets on everything I have left and bump them back. Iím going to shoot the 3 dented ones.

It just didnít make sense why I got through most of that batch of brass without a problem and then this. Thanks again.


Edited by Growley (12/03/17 07:48 PM)

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#6981554 - 12/03/17 08:25 PM Re: Trouble with new Lapua brass [Re: Growley]
FiremanJG Offline
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Registered: 12/16/08
Posts: 22926
Loc: Wolfe City, TX
Lapua makes very fine brass, but maybe they're not 100% perfect. That, and you may just have a tight chamber. Once you get your die set to a .002" shoulder bump, I would run any new brass through it from now on.
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#6981563 - 12/03/17 08:29 PM Re: Trouble with new Lapua brass [Re: Growley]
Growley Online   content
Bird Dog

Registered: 10/26/10
Posts: 307
Loc: Aledo, TX
Will do. Thanks.

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#6981632 - 12/03/17 09:26 PM Re: Trouble with new Lapua brass [Re: Growley]
kmon1 Offline
junior

Registered: 09/27/06
Posts: 22474
Loc: Texas
What do the dents look like? Good suggestions above but I would also clean the chamber just in case something got in there and is stuck to the chamber wall at the neck.
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#6981672 - 12/03/17 09:56 PM Re: Trouble with new Lapua brass [Re: Growley]
Growley Online   content
Bird Dog

Registered: 10/26/10
Posts: 307
Loc: Aledo, TX


Yeah I need to take a closer look at the chamber. I looked while I was out there but I could have missed something.

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#6981929 - 12/04/17 08:45 AM Re: Trouble with new Lapua brass [Re: Growley]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 11953
Loc: Lewisville, TX
Your picture shows why it's not chambering. The dents, and maybe the bullet engaging the rifling. Holy cow, those are seated long! Why so long?
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