It's all 18 stamped.Yes,IF your LC head stamp date(90's) is prior to ATK's involvement.
I find for 308, yes it's worth the effort. For 223 I am less inclined to go through all the hassle to use LC brass but I still save it. It does seem to hold up better than a lot of other 223 brass.
These brass have been run through my AR15.Not if it got shot through a MG first!
I have had a bad experience with Federal in 22-250. I got that batch of LC done. It wasn't too bad.If you are buying, star line is great brass, as is Lapua. Lake City is real good brass and lasts quite a while. Federal has been known to have loose primer pockets earlier than most other brands.
I shoot on my own property. I'll take the solitude in exchange for buying brass. Winchester was all I cared to use until I got some Sellier&Bellot 308 brass. It's primer pockets are extremely tight.life is too short for crimped primer pockets. lake city gets and F minus minus as far as I am concerned. I've gotten very good accuracy from winchester and remington. Don't know how good the cases are, but 223 out of an ar is very forgiving. And who cares how long the cases last. The ranges are drowning in 223 brass.
It's the extra information that is offered here that makes it nice. I appreciate the time that people take to help others. That machine is unnecessary unless you are trying to feed a machine gun.This might be interesting. I had a bud who worked gage inspection at one Army Ammunition plant. Army Ammunition plants are Government Owned, Contractor Operated. The real situation is now, Government funded, Contractor dominated. Anyway, once the Contractor reaches the Government quota, the Contractor is free to run the plant for itself. So that is why you occasionally see new, primed, LC cases, and fully charged ammunition with LC headstamps. The Contractor gets to keep and sell the stuff. It is made to the same standards as the military issue. And it is good stuff.
I have not shot every year, nor every caliber, but I have shot lots of once fired LC 223, 308, and 30-06 brass. As long as it is not machine gun brass, it is good stuff. Brass fired in a machine gun is swelled so much that even a small base die can't reduce it. That is when you buy a case roll sizer. Here is one, the Case Pro 100. Yours for $893, extra die sets at additional cost.
http://www.casepro100.com/desc.ydev?prod_id=33744
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Lake City was the best stuff to use in an AR, and the best stuff to use in a Garand or M1a. I used to pick up big handfuls of once fired Federal Gold Medal brass from the military teams. They shot that stuff out to 300 yards, sometimes 600 yards. The case heads in Federal brass would expand and drop a primer around reload three to four. It was free so I should not complain. But LC, that stuff would last, and last.
Brass quality varies, some years better than others, but when I was shooting match AR's, IMI match was good, W/W was good, never picked or used much R-P, but LC was my primary brass. I got lots of medals at Camp Perry shooting LC out to 300 yards, my 600 yard loads had W/W.
These brass have been run through my AR15.
I was contemplating buying starline or Winchester brass.
My research says 556/223 brass doesn't follow the same lines that 7.62x51 Vs 308 does.Ok, now we're on to something. There are differences in military vs commercial brass. LC is military, Starline and Winchester is commercial. I don't really know if it makes that big of a difference in 5.56mm, but it does in 7.62mm... the case capacity on military brass is less than the equivalent of commercial brass, so the same load would have higher pressure in military brass, all else being equal. Someone please correct me if I'm wrong on that. I do know that I get higher velocity on factory loaded LC M193 (55grn FMJ) vs 'Federal' M193... by 200fps.