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OCW load development need advice for a newbie

 
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  #15  
Old 08-26-2009, 11:00 PM
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Re: OCW load development need advice for a newbie

I agree, but it sure does help having a load that is accurate to begin with.
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  #16  
Old 08-27-2009, 05:09 AM
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Re: OCW load development need advice for a newbie

hey guys, my once fired brass is hard to chamber occasionally. This is after trimming and full length sizing. If I rotate the brass before chambering sometimes it's easy to close the bolt, and other times it takes a lot of effort. After a while I start to notice brass smearing on the bolt face from just closing the bolt down. After about 10 chamberings of the brass experimenting trying to see what's causing the hard closing bolt the rim of the case head has shiny lines on it almost all the way around it. Anyone ever run into this before?
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  #17  
Old 08-27-2009, 09:34 AM
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Re: OCW load development need advice for a newbie

Do you measure the headspace and compare the difference between rounds before and after being fired? And then after sizing to make sure you push the shoulder back a bit-.001-.002?

The rounds that are hard to chamber may be your higher pressure rounds that have expanded the case more. Measure the case at the base at case head and see the difference.

Try sizing the cases that are tough to chamber a bit more. Just turn the die down a little at a time , to push the shoulder back, and try to chamber a round each time until you feel just a slight amount of pressure.
If it is difficult to close the bolt it needs to be sized again and the shoulder pushed back some more.

Last edited by RockZ; 08-27-2009 at 04:08 PM.
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  #18  
Old 08-27-2009, 12:36 PM
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Re: OCW load development need advice for a newbie

Quote:
Originally Posted by Frogman77 View Post
hey guys, my once fired brass is hard to chamber occasionally. This is after trimming and full length sizing.
Sounds like it's time to anneal your brass.

Annealing Cases
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  #19  
Old 08-27-2009, 01:51 PM
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Re: OCW load development need advice for a newbie

I think I found the problem, my sizing die isn't pushing the shoulders back far enough.
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  #20  
Old 08-27-2009, 04:05 PM
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Re: OCW load development need advice for a newbie

I thought that was the situation. Were you able to size them properly when you turned the die down or did you run out of sizing authority when the shellholder hit the bottom of the die?
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  #21  
Old 08-27-2009, 04:20 PM
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Re: OCW load development need advice for a newbie

yup, ran out of room on the bottom. My chamber is also a tight chamber, I'm thinking about getting a small base die from redding to size the body down. New brass that's been full length sized chambers fine, but the once fired doesn't seem to get sized down enough in the shoulder. Thoughts?

also, what could be causeing the marks on the case rim? why would the bolt be cutting into the rim of the case head?

Last edited by Frogman77; 08-27-2009 at 04:28 PM.
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