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BAR pressure signs

 
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  #1  
Old 03-26-2012, 11:01 PM
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BAR pressure signs

How do you tell pressure signs on a browning bar? Not real sure how to know when I am getting too hot. Pretty sure I am not there yet, but would like to know what things your looking for on a semi-auto rifle
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Old 03-28-2012, 01:09 PM
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Re: BAR pressure signs

When I got to the range for a work up, I measure the extractor groove with dial calipers before and after firing.
Any growth all the way around is cause to stop and reduce powder change by 4%.
This is much better indicator for loose primer pockets than waiting for a primer to fall out.
And it is faster than waiting until another primer is inserted to see if insertion became too easy.

This only works for cartridges where the primer pocket is the weakest link.
Exception:
If the BAR is a 308 with Lapua small primer pocket brass, the primer piercing would be the weakest link.
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