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Reloading Berger Bullets


BAR pressure signs

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Unread 03-26-2012, 11:01 PM
Silver Member
Join Date: Nov 2008
Location: ND
Posts: 156
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

Defiance Rebel 338 Norma Mag 24" Benchmark Barrel
Manners T4 stock
G7 NF NXS 5.5-22X50MM

Savage LA 7SAUM 20" Benchmark Barrel
Manners T4
308 Varminter 2.0 Suppressor
Sightron SIII 6.5-24X50MM LRMOA

Remington 700 SA 22-243 Win
26" SS Benchmark Barrel 1-8 Twist
Grey Bull Precision Stock
Built by Hazer@Bison Barrels in Gillette,WY
Sightron SIII 6.5-24X50MM LRMOA

Tikka T3 Lite 270 WSM
Greybull Precision Scope
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Unread 03-28-2012, 01:09 PM
Gold Member
Join Date: Oct 2006
Posts: 652
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.
If the BAR is a 308 with Lapua small primer pocket brass, the primer piercing would be the weakest link.
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