Brass Failure.

[Leyerly338]

Noticed this while inspecting My brass after a trip through the Tumbler. I only have three firings on this Brass, guess I'll be discarding the lot and Parking the lapua until I can get some lapua Brass ordered.

 

[Leyerly338]

Is this due to excessive Headspace? Or excessive chamber pressures?

 

[KRP]

Shoulder bumped too far?

 

[Trnelson]

Either of those reasons could explain your result. What's the load data? I would at first glance suspect excessive pressure.

 

[Leyerly338]

Either of those reasons could explain your result. What's the load data? I would at first glance suspect excessive pressure.

88gr H1000 COAL 3.681" 300gr OTM Berger, Fed 215M Primers.

 

[Trnelson]

That should be a reasonable load. Adjust your die to just barely bump the shoulder. I'd start with fresh brass and recycle the rest of what you have there. YMMV

 

[green 788]

what kind of brass is that?

 

[Broz]

Yep, oversizing and thin brass. What dies?

Jeff

 

[Leyerly338]

Yep, oversizing and thin brass. What dies?

Jeff

I use The RCBS two die set Jeff, looking back at the issue I've had in the past I am to blame. When I was dealing with chambering issues I kept bumping and bumping the shoudler back. Well come to find out it was a pic rail screw that was causing the bolt closure issues and after resolving that I never adjusted My die depth (**** rookie). I have crimped all My brass and discareded it since finding the head seperation since I found several with thin spots and one had a split about 5/8" long running parallel between the web and shoulder. I am going to order Lapua brass from here on out, My buddy who is an experienced handloader is going to help Me get set up right and I plan on annealing between every firing in the future as well. It bums Me out cause I have finally found a load that it likes to shoot and groups well with but I'd rather take the time to get safe rather than blow My face off.

 

[Broz]

You are smart by tossing that brass. Aint worth the chance of a scored chamber either. You will be ok and it might shoot even better in brass as good as Lapua. You caught it in time, all is good.

Jeff

 

[Leyerly338]

You are smart by tossing that brass.

Jeff

My Girlfriend was looking at pic's online of catostrophic failures with rifles/brass and She was in tears after seeing the results. I was a little uneasy after I found the bad brass but I'm here to shoot another day.

 

[Mikecr]

You seem like a rational person. So consider a mistake as raising the probability of other mistakes -that you don't know about yet.
I suggest you pick up [ame="http://www.amazon.com/Handloading-Competition-Making-Target-Bigger/dp/096269259X?tag=duckduckgo-d-20"]Amazon.com: Handloading for Competition Making the Target Bigger. (9780962692598): Glen D. Zediker: Books@@AMEPARAM@@http://ecx.images-amazon.com/images/I/41bnCS92VjL.@@AMEPARAM@@41bnCS92VjL[/ame]
You probably won't put it down once you start reading it.

 

[Broz]

You seem like a rational person. So consider a mistake as raising the probability of other mistakes -that you don't know about yet.
I suggest you pick up Amazon.com: Handloading for Competition Making the Target Bigger. (9780962692598): Glen D. Zediker: Books
You probably won't put it down once you start reading it.

Great suggestion. I have lost track of how many hand loading manual and books I have. And I still use most of them once in a while for a reference.

Jeff