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Old May 12, 2002, 01:02 PM   #1
shu
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Join Date: May 11, 2000
Location: lower rio grande valley, texas
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military brass do make a difference.

Speer Manual says to decrease powder charge when using military brass, because thicker case walls mean smaller powder cavity.

I had loaded for 308win some sierra 168gr hpbt match with a modest 42.0gr of win748, using strings of several different cases on hand.

When I worked through to the Lake City Match brass, noise and recoil increased and the group (still an inch and half at 200 yards) jumped up two inches. Interesting.

That is what I most like about reloading - learning the subtlties of different powders, bullet designs, etc. This from a guy who used to just ask the hardware store guy for a box of 'the cheapest stuff you've got.'
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Old May 12, 2002, 01:37 PM   #2
C.R.Sam
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Be glad you weren't using an overly stiff load for a civillian case.

Capacity difference tween military and civillian cases has been published for over 60 years that I know of.

Seems to be a nice load for you and your gun tho. Good groups.

Sam
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Old May 13, 2002, 08:22 AM   #3
shu
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That's why I was using close to Speer's published starting load for this comparison.

It did make a believer out of me as regards sorting brass by headstamp.
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Old May 15, 2002, 06:08 AM   #4
WESHOOT2
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FRIGGIN' PRIMER CRIMP...............

Even in 9x19................
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