Can a 243 be rechambered for a 6mm Remington case? I have seen on some other forums where guys have done it, just not sure if they are not worried about the .025 difference at the shoulder, or the longer case takes care of this. Any of you guys know if this will work?
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Probably, but why? If you want the extra speed just punch it out to a .243 AI...
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How common is 243 AI? Can I by brass for it or will I have to form my own? 6mm brass is more common right?
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You just buy regular .243 Win brass/ammo, fire-form it, then reload as usual. I'm not sure how common 6mm brass is, but Lapua makes .243 brass...
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For those who understand, no explanation is needed. For those who do
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A golf course is a willful and deliberate misuse of a perfectly good rifle range.
Thanks jeep! You had me dig some more and the AI actually has a larger capacity then a 6mm, 4%. I also read about the fire forming and that seems pretty simple. With how common 243 brass is it would make more sense to go that route. Any ideas on what it would cost to have this cut by a gun smith?
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Hunting is like Marriage, you get out of it what you put in it. Sometimes you score and sometimes you don't, but its always fun going out!
I'm not sure how much it'd be...but probably around $100 or so, some of the smiths on here will chime in.
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For those who understand, no explanation is needed. For those who do
not understand, no explanation is possible.
A golf course is a willful and deliberate misuse of a perfectly good rifle range.
you'd be hard pressed to achieve more velocity with the 243 AI than with the 6mm if you load to the same pressures, but to rechamber to a 6mm would require a barrel setback which would be pretty expensive, so your better off with just a rechamber.
However, you will experience better case life with the 243 AI than you would with either the 6mm or the 243 as long as you don't really push it hard, another thing you should know, very often you will see no pressure sign with an AI cartridge until you lose prime pockets, when this happens that case is much closer to failing than a standard case which is starting to show signs of excess pressure. just a lil FYI.
RR
Probably, but why? If you want the extra speed just punch it out to a .243 AI...
+1. Good idea Jeep. I do not have much use for a 243, but you still have a good idea. This would allow you to use the same brass, And if you are neck siziing, you should be able to use the same dies??? Tom.
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Probably, but why? If you want the extra speed just punch it out to a .243 AI...
+1. Good idea Jeep. I do not have much use for a 243, but you still have a good idea. This would allow you to use the same brass, And if you are neck siziing, you should be able to use the same dies??? Tom.
No, you would need to buy .243 AI dies. I have Reddings and they were $90. They're not cheap..
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I love Christmas lights. They remind me of the people who voted for Obama. They all hang together; half of them don't work, and the ones that do, aren't that bright.
For those who understand, no explanation is needed. For those who do
not understand, no explanation is possible.
A golf course is a willful and deliberate misuse of a perfectly good rifle range.
Not for the sake of arguing. Well OK for the sake of arguing. If you are only sizing the neck, and not touching or bumping the shoulder-why would you need new dies??? You can neck size with FL dies if you do it correctly. But then I always take the expander ball out of the dies and use a Sinclair sizing mandrel.
I thought the AI rechambering mostly affected the body taper, and shoulder??? How would it affect the neck??? Tom.
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We need to stop using these terms today, "Sniper Rifle", "Tactical", "Assault Weapon".
.243 and 6mm
