.308 from 7mm08 cases

Death from Afar · July 11, 2013, 09:31 PM

Guys, I can get a lot of 7mm08 cases for the best price- free. I plan to use this as field brass, so if it gets lost- big deal. Would it need a trim after necking up? I assume you are having a slightly thinner neck so your brass life is going to be reduced. This will be run through my TRG.

Thanks.

mmb713 · July 11, 2013, 11:47 PM

Never heard of anyone doing 7mm-08 to 308, it's usually the other way around. It should work fine though by just running the brass through your 308 sizing die. Lube the inside of the necks for sure. Measure the cases after resizing and if they are too long trim them down. I would load them up the first time with light loads to fireform them to my gun's chamber and after that load them up normally. The necks may be a little thinner but I doubt you will run into any serious problems. If the necks split prematurely I guess you will have your answer. Free brass is free brass though. Lucky dog. I load 7mm-08 and had to pay cash for my brass.

Living the dream in New Zealand indeed. That is one of the few places on this earth where I would LOVE to live.

Jimro · July 12, 2013, 02:03 AM

It'll work just fine. I got some 243 brass for free that I necked up to 308. Anneal first, then lube the inside of the necks. I split a few necks before I tried annealing and lubing.

Jimro

PA-Joe · July 13, 2013, 07:28 PM

Why not sell the 708s and then get 308s.

Death from Afar · July 13, 2013, 08:02 PM

Thanks guys! Why not sell you ask? Well, the guy will give them to me on the basis they are used through my .308. It would not be right to go back on my word.

BigD_in_FL · July 13, 2013, 08:31 PM

And, after seeing the prices for guns, ammo, and components at your country's largest gun shop, I would take free brass every time.

Which powder are you going to use and would you mind sharing how much reloading components costs?

Thanks

July 11, 2013, 09:31 PM	#1
Death from Afar Senior Member Join Date: November 7, 2004 Location: Living the dream in Christchurch, NEW ZEALAND Posts: 1,635	.308 from 7mm08 cases Guys, I can get a lot of 7mm08 cases for the best price- free. I plan to use this as field brass, so if it gets lost- big deal. Would it need a trim after necking up? I assume you are having a slightly thinner neck so your brass life is going to be reduced. This will be run through my TRG. Thanks. __________________ "Beware of the Man with one gun...he probably isnt into guns enough to be safe with it".

July 12, 2013, 02:03 AM	#3
Jimro Senior Member Join Date: October 18, 2006 Posts: 7,097	It'll work just fine. I got some 243 brass for free that I necked up to 308. Anneal first, then lube the inside of the necks. I split a few necks before I tried annealing and lubing. Jimro __________________ Machine guns are awesome until you have to carry one.

July 13, 2013, 08:02 PM	#5
Death from Afar Senior Member Join Date: November 7, 2004 Location: Living the dream in Christchurch, NEW ZEALAND Posts: 1,635	Thanks guys! Why not sell you ask? Well, the guy will give them to me on the basis they are used through my .308. It would not be right to go back on my word. __________________ "Beware of the Man with one gun...he probably isnt into guns enough to be safe with it".

July 11, 2013, 11:47 PM	#2
mmb713 Senior Member Join Date: March 15, 2011 Location: Salt Lake City, UT Posts: 421	Never heard of anyone doing 7mm-08 to 308, it's usually the other way around. It should work fine though by just running the brass through your 308 sizing die. Lube the inside of the necks for sure. Measure the cases after resizing and if they are too long trim them down. I would load them up the first time with light loads to fireform them to my gun's chamber and after that load them up normally. The necks may be a little thinner but I doubt you will run into any serious problems. If the necks split prematurely I guess you will have your answer. Free brass is free brass though. Lucky dog. I load 7mm-08 and had to pay cash for my brass. Living the dream in New Zealand indeed. That is one of the few places on this earth where I would LOVE to live.

July 13, 2013, 07:28 PM	#4
PA-Joe Senior Member Join Date: June 9, 2010 Location: NEPA Posts: 909	Why not sell the 708s and then get 308s.

July 13, 2013, 08:31 PM	#6
BigD_in_FL Junior member Join Date: December 20, 2012 Location: The "Gunshine State" Posts: 1,981	And, after seeing the prices for guns, ammo, and components at your country's largest gun shop, I would take free brass every time. Which powder are you going to use and would you mind sharing how much reloading components costs? Thanks