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Old 07-28-2012, 05:30 PM   #1
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Default .243 Win. or 6mm Rem?

Speaking from a reloading perspective, which would most prefer, the .243 Win ot the .244/6mm Remington?
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Old 07-28-2012, 05:47 PM   #2
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The same, sort of.

The 6MMs are normally chambered with slower twist barrels, thus limiting the use of heavier bullets.

The .243s barrels normally have faster twist and will handle heavier bullets.

With the same, lighter weight, bullets they both have generally the same capabilities.

I have always favored the 6MM but feel the .243 has more versatility.

This one falls in the category of personnel preference in bullets weights for a given use.

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Old 07-28-2012, 06:33 PM   #3
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.243 brass is likely to be easier to find.

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Old 07-28-2012, 09:07 PM   #4
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Quote:
Originally Posted by oldpapps View Post
The same, sort of.

The 6MMs are normally chambered with slower twist barrels, thus limiting the use of heavier bullets.

The .243s barrels normally have faster twist and will handle heavier bullets.

With the same, lighter weight, bullets they both have generally the same capabilities.

I have always favored the 6MM but feel the .243 has more versatility.

This one falls in the category of personnel preference in bullets weights for a given use.
I do not believe that is correct. The original designation was .244 Remington and was introduced with a slower twist barrel. They changed the designation to 6mm and sped up the twist. The 6mm is capable of slightly higher velocities. The neck is also longer than the .243 and holds the bullets better. I vote 6mm!
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Old 07-28-2012, 10:02 PM   #5
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If you aren't dead set on either, I vote 30-06.

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Old 07-28-2012, 11:02 PM   #6
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'robo' may well be correct. Maybe I should have kept that 6MM back then. I still favor the 6MM over the .243, but then, I sold/traded all I had off. I stand corrected.

These are old numbers but give some info.

243 Winchester - 1 in 9" . . . . . . .Remington 660, 700, 788 (1969);
243 Winchester - 1 in 9 1/8" . . .Remington 700, 7400, 7600, 7;
243 Winchester - 1 in 9 1/4" . . .Savage (present)
243 Winchester - 1 in 10" Browning; Colt; FN; Harrington and Richardson models 300, 308, 360; Husqvarna; Mannlicher Schoenauer; Musketeer; Mossberg 800; Remington 700, 40-XB; Savage 99, 110, 111, 112-V, 116 (old); Sako Bolt and Lever Actions; Schultz and Larsen; Stevens 110; Winchester 70, 88,100,670,770; J.C. Higgins 51-L; Ruger 1, 77; Wichita;Weatherby Vanguard; Thompson/Center Rifle
243 Winchester - 1 in 12" . . . . .Steyr SSG-PII
244 Remington - 1 in 10" . . . . . .Remington 700
244 Remington - 1 in 12" . . . . . .Remington 722, 760, 740, 725, 40-XB; Sako
6mm Remington - 1 in 9" . . . . . .Remington 600, 700, 742, 760, 660; Browning B-78; Ruger
6mm Remington - 1 in 9" . . . . . .Remington 700, 4, 6, 7, 7400,7600
6mm Remington - 1 in 10" . . . . .Remington 40-XB; Schultz and Larsen; Ruger 1, 77; Browning
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Old 07-29-2012, 02:49 AM   #7
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I chose the 6mm rem it has a velocity edge between the two cartridges,I also like the longer neck for seating bullets.

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Old 07-29-2012, 04:12 AM   #8
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I've had, and reloaded both.

The 6MM has a longer neck, and IMHO is therefore much easier to reload. It also has about a 100 FPS velocity Advantage with equal bullet weights.

The .243 bass is easier to find.

Bottom line, I liked the 6MM better.( but the differnce is small. Both are great cartridges.)

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Old 07-29-2012, 05:58 AM   #9
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Heard a story once about Jack O'Conner. He had little use for the guy that designed the .243, but had even less for Remington, so he got around it by just promoting Winchester rifles.



image-532973577.jpg

I throw this pic around on here a lot, but it's just so damn good! This was with my wife's Tikka .243 and a nice load I worked up. 95 gr SST, 44 grains IMR 7828, CCI BR-2 primer and Hornady brass.

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Old 07-29-2012, 02:46 PM   #10
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If you take your 6mm out to the field on a hunt 500 miles away and forget the ammo, you might be screwed. The 243 is a lot more common and shelf ready. Everybody has a 243 right? Here is some ammo in camp, it's my back up gun.

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