Case Capacity Winchester vs Lake City in 308Win

garyjackso · January 10, 2013, 02:18 PM

I am changing from Winchester Commercial to Lake City Military brass in my target bolt gun 308Win loads. How much LESS capacity can I expect in the LC brass and how much LESS of 44grs/4064 should I expect to load??

GJ

grubbylabs · January 10, 2013, 03:13 PM

I think what most do is fill a case's with water to compare volume. But I bet some one here already knows the answer.

m&p45acp10+1 · January 10, 2013, 03:17 PM

Water weiging them is the way to go.

5R milspec · January 10, 2013, 06:44 PM

I'd start at 42gn and work back up to your load.Mil brass can come in at 2gn less a times.for this is what I have found when I tryed it in 223.I worked one load one time that took 2gn's less for the same POI for a Rem case.To add to this win brass holds the most from any other brass from what I undersatnd and have found myself.

Bart B. · January 10, 2013, 08:13 PM

Weighing water from a case won't be too accurate in determining how much capacity the case has. Depending on how much out of round the case is, it'll have different amounts of room inside for the water.

Just weigh cases. For every 10 grains difference in weight, adjust the powder charge 1 grain. Heavier cases need less powder, and so on...... So you'll probably use 43 grains of 4064 under 168's.

I don't understand why one would not use commercial brass when military match brass isn't all that good. It was probably originally fired in service rifles and they all have out of square case heads. Military teams tried reloading that brass but gave up; it never shot as accurate as new, virgin brass. I've fired thousands of rounds of military match brass and never picked up one to reload. Match brass was not made for reloading; too hard and not all that great in dimensional quality.

January 10, 2013, 02:18 PM	#1
garyjackso Member Join Date: August 30, 2009 Location: Perkinston, MS Posts: 26	Case Capacity Winchester vs Lake City in 308Win I am changing from Winchester Commercial to Lake City Military brass in my target bolt gun 308Win loads. How much LESS capacity can I expect in the LC brass and how much LESS of 44grs/4064 should I expect to load?? GJ

January 10, 2013, 03:13 PM	#2
grubbylabs Senior Member Join Date: October 11, 2009 Location: Hansen Idaho Posts: 1,465	I think what most do is fill a case's with water to compare volume. But I bet some one here already knows the answer. __________________ * (Swinging club) Whack! whack! whack! * Nope, the old nag's still dead . (Capt Charlie)

January 10, 2013, 03:17 PM	#3
m&p45acp10+1 Senior Member Join Date: May 3, 2009 Location: Central Texas Posts: 3,930	Water weiging them is the way to go. __________________ No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.

January 10, 2013, 06:44 PM	#4
5R milspec Senior Member Join Date: December 11, 2009 Location: South Carolina Posts: 360	I'd start at 42gn and work back up to your load.Mil brass can come in at 2gn less a times.for this is what I have found when I tryed it in 223.I worked one load one time that took 2gn's less for the same POI for a Rem case.To add to this win brass holds the most from any other brass from what I undersatnd and have found myself. __________________ life is great but its better when you can own as many guns you wish to own.for me I haven't bought enough yet.

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January 10, 2013, 08:13 PM	#5
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	Weighing water from a case won't be too accurate in determining how much capacity the case has. Depending on how much out of round the case is, it'll have different amounts of room inside for the water. Just weigh cases. For every 10 grains difference in weight, adjust the powder charge 1 grain. Heavier cases need less powder, and so on...... So you'll probably use 43 grains of 4064 under 168's. I don't understand why one would not use commercial brass when military match brass isn't all that good. It was probably originally fired in service rifles and they all have out of square case heads. Military teams tried reloading that brass but gave up; it never shot as accurate as new, virgin brass. I've fired thousands of rounds of military match brass and never picked up one to reload. Match brass was not made for reloading; too hard and not all that great in dimensional quality.