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.243 Win. to 6MM Rem. ?

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.243 Win. to 6MM Rem. ?

Old 03-03-2014, 09:01 AM
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Default .243 Win. to 6MM Rem. ?

As a 6MM Remington fan, it's sad that they are no longer in production. I was lucky enough to get a Remington 700 CDL Special Edition in 6MM and I love it! But for everyday use I would like to get something in 6MM that would be a good, cheap shooter. I am thinking about getting a H&R Handi Rifle or similar single shot rifle
My question is could the chamber of a .243 be bored to 6MM Remington?
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Old 03-03-2014, 10:12 AM
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The 6mm Rem case is only 0.188" longer than a .243 Win, so I would think there is enough steel in the barrel for that modification, but the gunsmith doing the re-chambering should be able to tell you for sure.
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Old 03-03-2014, 10:52 AM
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Piece of cake...
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Old 03-03-2014, 11:05 AM
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Originally Posted by jeepkid
Piece of cake...
Even with the taper of the 6mm? The diameter of the .243 is .454" at the shoulder and the 6mm is .429" - but the 6mm's shoulder is .165" longer from the base. I would think it would be very close.

Interesting proposition.
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Old 03-03-2014, 11:15 AM
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Thanks! I know that the 6MM is not that more potent than the .243, but I'm just a big fan of the 6MM, it's what I killed my first buck with. I had a sporterized Mauser 98 chambered in 6MM years ago but in a moment of stupidity I sold it!
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Old 03-03-2014, 11:51 AM
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Any reputable gunsmith can do this for you with ease.
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Old 03-03-2014, 01:17 PM
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Originally Posted by Big Uncle
Even with the taper of the 6mm? The diameter of the .243 is .454" at the shoulder and the 6mm is .429" - but the 6mm's shoulder is .165" longer from the base. I would think it would be very close.

Interesting proposition.
Actually, the more I think about it, I'm not sure since it's a single shot. If it was a bolt gun then you could just set it back and rechamber, but I'm not sure how a single shot would work...

He could make it into a 243 Ackley and have a winner
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Old 03-03-2014, 01:21 PM
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Originally Posted by jeepkid
Actually, the more I think about it, I'm not sure since it's a single shot. If it was a bolt gun then you could just set it back and rechamber, but I'm not sure how a single shot would work...
That is what I was thinking. I am curious about this one.
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Old 03-03-2014, 02:35 PM
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Originally Posted by Big Uncle
That is what I was thinking. I am curious about this one.
Yeah not an easy task on a single shot as the barrel would have to be set back...possible, yes....easy (piece of cake) no. It would be easy with a bolt gun...but the work would probably cost more than the gun on a H&R.
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Old 03-03-2014, 04:16 PM
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Hmmm... I'll check into that. I thought that if it was possible, it would be easier with a single barrel. A bolt gun would be even better!
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