Got a quick question...I cannot find any 223 brass except for the high dollar lapua...so im gonna order some. However, I FL size and neck size with a bushing, and I know the lapua stuff is thicker than most brass. Can someone tell me what bushing I will need or please measure a few case neck walls and let me know the thickness. Id like to run 3 thou neck tension. Any help is greatly appreciated.
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Lapua 223 brass question
- Thread starter patrick123456789
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Neck wall thickness is ~.013.
What bushing you may need depends on how much springback you have in your necks, where the state of the necks hardness is a factor. But, generally, it's say something like .246 - .245 to get that .003 neck tension.
You may find this of interest:
Lapua 223 Rem Brass Weight Variation
I recently weighed 100 pieces of brand new Lapua 223 Remington "Match" brass, and honestly...
precisionrifleblog.com
Hmmm...good info. I do not want to buy lapua...but I am out of options as nothing else is in stock. I already have a .246 bushing, but I think Ill get a .247 as well just to be on the safe side...Thanks for all the info guys...
x2, mine from 2 different lots have measured .269
I use a .265 bushing followed with a turning arbor as my expansion so I end up with my .247 final sized.
Patrick123456789 as a option have you considered buy once fired 223/556 brass ?
just in case here’s a source ://www.capitalcartridge.com/once-fired-223-5-56-brass-s/116.htm
just in case here’s a source ://www.capitalcartridge.com/once-fired-223-5-56-brass-s/116.htm
I wouldn’t go buying buckets of random shit brass just because Lapua is 60 cents a case new.
Lapua brass does not seem to be what it once was. Have seen as much as .002” neck wall thickness variation on the same case. Neck turning takes care of that. On the plus side the flash holes have no burrs and the primer pockets are good for 10+ firings.Neck wall thickness is ~.013.
What bushing you may need depends on how much springback you have in your necks, where the state of the necks hardness is a factor. But, generally, it's say something like .246 - .245 to get that .003 neck tension.
You may find this of interest:
Lapua 223 Rem Brass Weight Variation
I recently weighed 100 pieces of brand new Lapua 223 Remington "Match" brass, and honestly...
OFG
My 75gr ELDm loaded rounds measured 0.250in and I use a 0.248in bushing. This lot of Lapua is from circa early 2018
Keep in mind that brass hardens with every firing, so that affects how the brass springs back after sizing. The harder it gets the more it springs back so you need progressively smaller bushings as time goes on.
If you anneal, that will re-set the cycle and you will be back to the larger bushing.
As mentioned above the neck wall thicknesses always vary by some amount, so if you use the same bushing for all, you will get a range of neck tension variability.
So the "correct" bushing is rarely one size... its a range of sizes.
For me, I typically begin with the thickest part of a neck times 2 plus bullet diameter and order that size and every bushing in between for about 5 or 6 sizes smaller.
When they are not neck turned, I like to sort my cases according to the bushing used to get the neck tension I'm after. I start with the large bushing and size all the cases and use a pin gage that is smaller than the bullet by the amount of neck tension I want as a go-no go gage.
If the pin goes, I put that case in a bowl to be sized smaller... If the pin will not go, then that case is sized correctly and goes into it's own bowl with all other cases that needed that same size bushing.
I just repeat until all cases are sorted into lots like this and they become a set that are never mixed with others.
If you anneal, that will re-set the cycle and you will be back to the larger bushing.
As mentioned above the neck wall thicknesses always vary by some amount, so if you use the same bushing for all, you will get a range of neck tension variability.
So the "correct" bushing is rarely one size... its a range of sizes.
For me, I typically begin with the thickest part of a neck times 2 plus bullet diameter and order that size and every bushing in between for about 5 or 6 sizes smaller.
When they are not neck turned, I like to sort my cases according to the bushing used to get the neck tension I'm after. I start with the large bushing and size all the cases and use a pin gage that is smaller than the bullet by the amount of neck tension I want as a go-no go gage.
If the pin goes, I put that case in a bowl to be sized smaller... If the pin will not go, then that case is sized correctly and goes into it's own bowl with all other cases that needed that same size bushing.
I just repeat until all cases are sorted into lots like this and they become a set that are never mixed with others.
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