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.243 Win to .260 Rem conversion

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/22/2013 at 16:48
Skylar McMahon View Drop Down
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I have a .243 that I'm working on, small project that has been taking a while.
 
But I have a friend who has a barrel in .260 that he's selling. I was curious.
 
Could I change the barrel and maintain the same bolt?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/22/2013 at 16:53
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Yes they both have the same parent case the .308.  .470 bolt face.

Along with:
225 Winchester
22/250 Remington
6mm Norma BR
243 Winchester
250 Savage
260 Remington
6.5/284 Norma
7/08 Remington
284 Winchester
300 Savage
308 Winchester
338 Federal
35 Remington
358 Winchester
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/22/2013 at 18:23
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What make is it? all you need is go/no go gauges and a barrel vise  and it all should work.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/22/2013 at 19:40
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Depending on what rifle it was removed from vs. what rifle it's being installed on, you may need to face the barrel tenon shoulder (that makes up against the front of the receiver) forward and/or the chamber face at the end of the barrel tenon. In the process, you may need to chase the threads. If you move the shoulder forward, you will likely also need to recut (deepen) the chamber with a chamber reamer. Any competent gunsmith can do this. Then, check with headspace gages. If you're lucky, the barrel may thread right onto the action just fine with no modifications needed.

Either way, this can easily be done...but if you're planning to change the barrel anyway, I think I'd just get a good custom barrel in 6.5 and install it rather than fit an existing factory take-off barrel. Then, you can get the exact twist (too many factory barrels tend to have too slow a twist), rifling profile, chamber dimensions, length, and contour you want and it will shoot better.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/22/2013 at 20:25
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Why change from the .243?  It's a great caliber.  243 gives up very little to 260 in parformance and "availability" of 243 far exceeds 260.  You don't have to burn the barrel out of .243 to get superior performance.  You can get factory loads to 105gr and 115DTACs are supposed to be "the bomb".  I've not shot that bullet, but have shot everything from 75gr to 105 in factory or factory/custom stuff.  My girls all hunted with it and I hunted for a couple of years exclusively with it.  In that two years, one deer went 10 yards… all the rest dropped on the spot.  
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/22/2013 at 20:46
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There's nothing I'd fire a .260 at where if armed with a .243, I'd pass up the shot, given the right bullet for the task at hand in both.

But sometimes, if you already have rifles chambered in something, you just want the next rifle chambered in something different just for variety's sake. Or, at least that's how I roll.

Both are great cartridges for medium sized and smaller game.


Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/22/2013 at 22:30
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If coming off a custom rifle, it might have had a thicker recoil lug or no lug, depending on the action. The odds of it just spinning on, and head-spacing correctly are slim.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 02:19
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The point to the .260 is to shoot high BC 6.5mm 140 gr projectiles I think - making it quite different than a .243.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 08:08
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Actually, the 243 is an outstanding long range caliber
George Gardner from GAP rifles is a big proponent of it and winning matches
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 08:41
RifleDude View Drop Down
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Originally posted by billyburl2 billyburl2 wrote:

If coming off a custom rifle, it might have had a thicker recoil lug or no lug, depending on the action. The odds of it just spinning on, and head-spacing correctly are slim.


Very true, which is why you may have to face either the barrel tenon shoulder, the chamber face, or both and re-ream the chamber.

To be on the safe side, it's sometimes best to just turn the whole chamber end of the barrel back, re-thread, and re-ream to proper headspace to the particular action from scratch.

...which is also another reason why if I decided to rechamber a rifle to a different caliber, I'd just install a new, custom tube anyway rather than fool with a take-off factory barrel.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 09:52
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The additional velocity of the lighter wt. 243. bullets will make up for the higher bc of the 6.5. The only difference is cross winds, the 6.5 being somewhat friendlier --- at least on paper. Any actual difference depends on gun setup. (scope/wt. type of rest etc.). given two identical setups any difference wouldn't be apparent up to 600 yards. Because of the complications RifleDude outlines, why not just go to a 6.5/284 and be assured of an increase in performance (even marginal in this case).
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 14:49
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Here it is.
 
"anyone looking to do a .260 Rem build and needs a barrel let me know. I have a brand new, never fired, Bartlein #14 contour barrel. It is 23" long and was chambered w/a tenon thread of 1.060x16, and a muzzle thread of 5/8-24 by the guys at... G.A.P.. The barrel was then spiral fluted by Chad Dixon up at Long Rifles Inc. This barrel is ready for a Rem 700 S/A to become a kickass rifle. I am asking $700 or best offer shipped and insured to your door."
 
I agree that the .243 is a great round, I'm not argueing that at all and it's available nearly every where. But this one is threaded. I was just thinking would it be worth it, or would it be more trouble?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 15:43
ccoker View Drop Down
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feel free to send it to me for testing :)
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 16:07
Skylar McMahon View Drop Down
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Charles, your close enough, maybe we could get together and have a range day.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 16:13
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Do you like the spirals?  Could you live without?  That seems high for a barrel and I imagine thats a contributing factor
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 16:14
Skylar McMahon View Drop Down
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I could honestly, but a friend of mine owns this one.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 16:50
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Oh, I was under the impression that was a factory take-off barrel. Very nice barrel, though $700 is a tad on the steep side. It's not too out of line, though. However, if you don't like the spiral flutes and if by chance you'd rather go with a lighter contour, you can always turn the blank down, which will remove the flutes.

Or, for about the same money, you can choose from several brands of custom tubes and have the length, contour, twist, and chamber you wish, installed.

If you do want that contour and the spiral flutes grows on you, you might get lucky and the headspace is perfect as is since it was fitted to a 700. Or, given variations in the recoil lug and bolt head position, you may only be off a small amount, where it's no big deal to face a small amount of mat'l off the thread shoulder or chamber face.

Either way, that barrel should shoot lights out!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/23/2013 at 16:55
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What twist, by the way? 4 or 5R style lands? SAAMI chamber, short throat, or...?

Those particulars would have a huge bearing on whether or not I'd buy it if it were me.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/25/2013 at 23:23
Skylar McMahon View Drop Down
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Ted, I'm not sure.
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