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New Build: 6mm Rem vs. 243 Win

 
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Old 07-03-2011, 11:37 PM
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New Build: 6mm Rem vs. 243 Win

As a kid I my first bolt rifle was a Remington Model 7, 6mm Remington which I still have and use on occasion. I'm thinking of a long range 6mm build, and am having a hard time deciding between 6mm Rem and .243 Win. The rifle would be based on a stainless Remington M700 long action, and probably a 24-26" fast twist 1:7 barrel to shoot the heavier 105 to 115 grain bullets. The rifle would be used primarily for fun, target practice, coyote and deer hunting. I know the .243 has better (Lapua) brass availability but a little less powder capacity. The pros for me of the 6mm is that I have quite a bit of Remington brass on hand, reloading dies, and it should yield a little more velocity. I'd like to hear other's thoughts and opinions on this. Thanks in advance.
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Old 07-04-2011, 12:41 AM
Edd Edd is offline
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Re: New Build: 6mm Rem vs. 243 Win

That decision would be an easy one for me. I'd pick the 6mm.
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Old 07-04-2011, 03:17 AM
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Re: New Build: 6mm Rem vs. 243 Win

+1, 6mm over 243.
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Old 07-04-2011, 04:46 AM
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Re: New Build: 6mm Rem vs. 243 Win

Well I would say since you already have all the 6mm stuff than just stick with it. I was thinking the same thing awhile back and just ended up going with a 243 in a factory sps varmint, and that decision was based purely on the price of brass. I like the cheaper brass, but you can get the lapua if you really want to wring it out. I would think the 6mm might be a better option if your running the heavies. Good luck with your decision.
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Old 07-04-2011, 08:00 AM
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Re: New Build: 6mm Rem vs. 243 Win

Quote:
Originally Posted by NWdan View Post
As a kid I my first bolt rifle was a Remington Model 7, 6mm Remington which I still have and use on occasion. I'm thinking of a long range 6mm build, and am having a hard time deciding between 6mm Rem and .243 Win. The rifle would be based on a stainless Remington M700 long action, and probably a 24-26" fast twist 1:7 barrel to shoot the heavier 105 to 115 grain bullets. The rifle would be used primarily for fun, target practice, coyote and deer hunting. I know the .243 has better (Lapua) brass availability but a little less powder capacity. The pros for me of the 6mm is that I have quite a bit of Remington brass on hand, reloading dies, and it should yield a little more velocity. I'd like to hear other's thoughts and opinions on this. Thanks in advance.
I would go with the 6mm Rem also because you are familiar with it and have all the stuff to
reload it.

If you intend to shoot the 105+ bullet weights you will need to increase the twist rate.(The old
factory barrels had a 1 in 12 twist and that is what killed there popularity compared to the
243 Wins 1 in 10 twist.

I would recomend a 1 in 8 twist that would allow you to shoot any bullet weight without over
rotating lighter bullets.

A quality barrel like a Lilja Stainless will also help the velocity and cleaning.

J E CUSTOM
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Old 07-04-2011, 08:16 AM
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Re: New Build: 6mm Rem vs. 243 Win

1 in 7 1/2 twist is minimum for 115g. bullets. May be too long for an extended magazine box with 107/115g.
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Old 07-04-2011, 08:53 AM
Edd Edd is offline
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Re: New Build: 6mm Rem vs. 243 Win

Quote:
Originally Posted by shortgrass View Post
1 in 7 1/2 twist is minimum for 115g. bullets. May be too long for an extended magazine box with 107/115g.
Why would length be an issue with a model 700 long action? Unless my brain and calculator are out of sync, seating a 115 gr Berger against the lands in a standard 6mm chamber will have an OAL length less than 3.100".
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