military brass do make a difference.

shu · May 12, 2002, 01:02 PM

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.'

C.R.Sam · May 12, 2002, 01:37 PM

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

shu · May 13, 2002, 08:22 AM

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.

WESHOOT2 · May 15, 2002, 06:08 AM

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

May 12, 2002, 01:02 PM	#1
shu Senior Member Join Date: May 11, 2000 Location: lower rio grande valley, texas Posts: 216	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.' __________________ If you would have Liberty you must accept that individual security is not the responsiblity of government. You must. - XAVIER ONASIS

May 13, 2002, 08:22 AM	#3
shu Senior Member Join Date: May 11, 2000 Location: lower rio grande valley, texas Posts: 216	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. __________________ If you would have Liberty you must accept that individual security is not the responsiblity of government. You must. - XAVIER ONASIS

May 15, 2002, 06:08 AM	#4
WESHOOT2 Senior Member Join Date: February 20, 1999 Location: home on the range; Vermont (Caspian country) Posts: 14,324	FRIGGIN' PRIMER CRIMP............... Even in 9x19................ __________________ . "all my ammo is mostly retired factory ammo"

May 12, 2002, 01:37 PM	#2
C.R.Sam Senior Member Join Date: October 29, 1999 Location: Dewey, AZ Posts: 12,858	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