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RCBS Rockchucker ?????

 
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  #8  
Old 03-13-2008, 08:41 AM
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Quote:
Originally Posted by ICANHITHIMMAN View Post
Brass is Lapua/5 to 6 loadings...
Is it time to anneal?
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  #9  
Old 03-13-2008, 11:17 AM
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When you notice the OAL starting to get shorter or longer, have you tried to measure them with a bullet comparator? Something along the lines of the Hornady (used to be Stoney Point) bullet comparator. I have noticed on occasion that OAL can vary a little, but when measuring with a comparator, you actually measure at the ogive and they are consistent. Just a thought.
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Old 03-14-2008, 01:46 AM
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anneal?

anneal I am aware of the words definition but how do I do it? Also what will it do to help me?

I looked at the Hornady Chamber All™ Bullet Comparator looks like a good idea and I think I will try it not to expensive and that just might be it, and its something I had never thought of.
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Last edited by ICANHITHIMMAN; 03-14-2008 at 01:52 AM.
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  #11  
Old 03-14-2008, 04:26 AM
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I'm unable to provide an extensive answer for you. The forum will time me out and disconnect. However, the following may benefit you.

Three reasons a cartridge won't chamber -

Brass work hardens with age and sizing. It will influence the sizing process. Annealing reverses the hardening effect, and should be performed periodically, although I don't think it is influencing what you are recognizing since the brass chambers w/o problem. Here is a link on annealing:

June, 96 Cases

You probably don't have a problem, as you will come to realize. For brevity's sake, I will let others address the issue.

Last edited by Winchester 69; 03-14-2008 at 03:28 PM.
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  #12  
Old 03-14-2008, 07:55 AM
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good info

Thanks for that info I read it over and think I might give it a try. I have the felling that I know what the issue is now. You guys were a big help
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  #13  
Old 03-14-2008, 08:22 AM
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Quote:
Originally Posted by ICANHITHIMMAN View Post
Thanks for that info. I read it over and think I might give it a try.
Presume you're referring to annealing. You can get the crayon from a welders supply.

Quote:
I have the feeling that I know what the issue is now.
I can guess that your ogive to base measurement is consistent, but would you give us a hint?

Last edited by Winchester 69; 03-14-2008 at 08:28 AM.
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  #14  
Old 03-14-2008, 08:36 AM
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"I notice them starting to get shorter or longer so I then have to re-adjust the die to get back to the right OAL."

Ah! I see. Think you will find that the reason for tiny variations in OAL is due to the bullets, not the dies. Variations of perhaps .005" are, in the real world, exactly the same, they will have no effect on a target. So, yes, you may be getting to anal.

I don't know why OAL has recently become such a puzzle for newer loaders. It wasn't a problem before the newer loading manuals started publishing the OAL they used to develop the loading data but it's no more written in stone than the powder charges they list.

Annealing will have absolutely no impact on OAL consistancy.

Last edited by boomtube; 03-14-2008 at 04:16 PM.
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