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5/7/2014 9:38:27 AM EDT
I just ordered a 243 LBC from BHW.  I got a 20" standard profile with a rifle length gas system on a 1-8 twist.  This was definitely an impulse buy.  What I found so far is that a 243LBC is just a 6.5 Grendel necked down to 6mm.  I assume that I can get a Grendel neck sizing bushing die and just replace the bushing with a 6mm bushing to do the sizing.  anyone have any experience with this?.  any input rather it be handloads, experiences or information would be great thanks.
5/7/2014 9:57:44 AM EDT
[#1]
The neck sizing dies that I use do not neck size all the way down to the shoulder.  So you may have problems chambering.
5/7/2014 10:41:52 AM EDT
[#2]
What dies are you using
5/7/2014 12:44:36 PM EDT
[#3]
Dies and such for 6mmAR might also be helpful.

John
5/7/2014 1:05:47 PM EDT
[#4]
Quote History
Quoted:
Dies and such for 6mmAR might also be helpful.

John
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you just cost me so much money...
5/7/2014 4:08:26 PM EDT
[#5]
Is the 6mm AR the same as the 243 Lbc
5/7/2014 4:43:38 PM EDT
[#6]
Precision308 I would assume it's a straight forward swap bushings and go, I take 6.8 down to 6mm but I do it with 3 bushings as I found adding the 3rd  paid for it's self in saved brass. I'm using Redding type S FL sizing dies
5/7/2014 6:47:35 PM EDT
[#7]
Is there a diff b/t it and 6mmAR??????????
5/7/2014 8:28:00 PM EDT
[#8]
After a little research 6mm AR is a little shorter case body.  Several others have had luck using a 6mmppc neck sized so that is what I will try
5/7/2014 9:37:09 PM EDT
[#9]
Quote History
Quoted:
After a little research 6mm AR is a little shorter case body.  Several others have had luck using a 6mmppc neck sized so that is what I will try
View Quote


6mm ar issimply made by nexking brass down, NO resizing, shoulder moving or  trimming required, unless of course brass is stretched from firing.  


Does the 243 lbc require resizing, shoulder movement, fireforming , or trimming?  Is it interchangible with 6mm ar??

Closed sourcers are really pissing me off...
5/8/2014 3:59:18 AM EDT
[#10]
I googled the two and 6mm ar has different dimensions than the 243lbc. Ive read some good on this cartridge especially figuring in it is a ar15 platform.  Im curious to see what barrel life is.
5/8/2014 6:02:18 AM EDT
[#11]
The 243 LBC from BHW is not a closed source. PT&G makes the reamers.  Barrel life is unkown as none of us have shot a barrel out and we have been shooting the snot out of them  Die choices are the FL Redding Type S Grendel die. Don't bother with the 6 PPC dies as they won't size the base of the case. I did that initailly to get my three barrels running but the Grendel is what you need. Any small area not sized by the bushing is incocnsequential,  

Best brass is LAPUA...the NEW AA stuff is just rebadged Hornady. That is suported by the AA site. Large amounts of information has been posted on other sites and is available with a quick search.  No fire-forming.

Feel free to contact me if you have any questions.

Greg
5/8/2014 2:39:40 PM EDT
[#12]
So with the 243 lbc you have to move the shoulder back?

Did les b invent it or did they just commemorate him since it is based off the 264 lbc??
5/8/2014 6:20:22 PM EDT
[#13]
Quote History
Quoted:
So with the 243 lbc you have to move the shoulder back?

Did les b invent it or did they just commemorate him since it is based off the 264 lbc??
View Quote


No sholder movement in a 243 LBC.  

I would say that it was parallel development by several people.  The BHW version has a very slightly raised shoulder. Miniscule but it is there.  Overall the case is well balanced.  The 6X6.8 will out run it but I am such a purist I have three AR's in each plus a Savage barrel in each also.

Remember these aren't SAAMI  cartidges. Just like the old 22-250 Varmnter there are nuances from one to another.

Greg
5/8/2014 7:42:09 PM EDT
[#14]
Quote History
Quoted:


No sholder movement in a 243 LBC.  

I would say that it was parallel development by several people.  The BHW version has a very slightly raised shoulder. Miniscule but it is there.  Overall the case is well balanced.  The 6X6.8 will out run it but I am such a purist I have three AR's in each plus a Savage barrel in each also.

Remember these aren't SAAMI  cartidges. Just like the old 22-250 Varmnter there are nuances from one to another.

Greg
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
So with the 243 lbc you have to move the shoulder back?

Did les b invent it or did they just commemorate him since it is based off the 264 lbc??


No sholder movement in a 243 LBC.  

I would say that it was parallel development by several people.  The BHW version has a very slightly raised shoulder. Miniscule but it is there.  Overall the case is well balanced.  The 6X6.8 will out run it but I am such a purist I have three AR's in each plus a Savage barrel in each also.

Remember these aren't SAAMI  cartidges. Just like the old 22-250 Varmnter there are nuances from one to another.

Greg


so all you have to do is neck it down w/ one or two bushing dies and load?  
5/10/2014 1:31:53 PM EDT
[#15]
Quote History
Quoted:


so all you have to do is neck it down w/ one or two bushing dies and load?  
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
Quoted:
So with the 243 lbc you have to move the shoulder back?

Did les b invent it or did they just commemorate him since it is based off the 264 lbc??


No sholder movement in a 243 LBC.  

I would say that it was parallel development by several people.  The BHW version has a very slightly raised shoulder. Miniscule but it is there.  Overall the case is well balanced.  The 6X6.8 will out run it but I am such a purist I have three AR's in each plus a Savage barrel in each also.

Remember these aren't SAAMI  cartidges. Just like the old 22-250 Varmnter there are nuances from one to another.

Greg


so all you have to do is neck it down w/ one or two bushing dies and load?  



That is correct.

Greg
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