Is there a difference between a 6mm and a .243? I was recently told that a 6mm would shoot a .243 shell...
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6mm vs. .243
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Originally posted by dswaim View PostThanks... That is what I was thinking... I asked my wife to stop and pick a box of 6mm up, and the guy at Sports Authority in Humble tried to sell her a box of .243...
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243Win==necked down 308Win
6mmRem==necked down 7x57
They are NOT intherchangable. A rifle chambered in one will not safely fire the other. In fact, I don't think the shoulder dimensions will allow you to fully chamber either in the other.
The twist rates were different when the 6mm was introduced at the 244Rem. When the 243Win started proving more popular because it could handle the heavier bullets, Remington changed the standard twist allowing it to stabilize heavier bullets. Now I believe the factory offerings have the same twist and are virtually interchangeable. They both shoot the exact same diameter bullet.
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They are totally different. Do not mix or try to shoot a 6mm in a 243.
The casings are not the same.The neck on the 6mm is longer than the 243.
And yes a 6mm is a 244 When you reload, you still buy the same diameter bullet for both. Please , please don't do it. The counter help has been known to not know what they are talking about.
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Originally posted by CDH View PostNow I believe the factory offerings have the same twist and are virtually interchangeable. They both shoot the exact same diameter bullet.
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Originally posted by CDH View Post243Win==necked down 308Win
6mmRem==necked down 7x57
They are NOT intherchangable. A rifle chambered in one will not safely fire the other. In fact, I don't think the shoulder dimensions will allow you to fully chamber either in the other.
The twist rates were different when the 6mm was introduced at the 244Rem. When the 243Win started proving more popular because it could handle the heavier bullets, Remington changed the standard twist allowing it to stabilize heavier bullets. Now I believe the factory offerings have the same twist and are virtually interchangeable. They both shoot the exact same diameter bullet.
X2. The .243 is more versital 58 grain-105 gr. 6MM 80 grain- 105 gr. in my loading manual They will both do a superb job. It will probably be easyer to find 243 ammo anywhere you go than 6MM .
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