re barrel from 243w to 260rem

Thinking of project next year my rem m700 sps in 243 has had lots and lots of rounds down the tube and accuracy has never been that great in that barrel it has always had a dull bore, never bright and shiny. I have shortened the barrel and suppressed it and with lots of trail and error with reloading i have gained reasonable accuracy but its been a problem child very fussy when compared to my 223 and 308 that with reloads i had instant success.
So i think its time to re barrel and was thinking changing it to 260rem with a similar contour barrel and suppress it.
What powder and bullet combo are others using i have heard that adi ar2209 works well.

140-147 case full of 2209 is what I like. Newer powders may give more speed. I'm getting 2740fps from a 147 out of 19.5 barrel

2209 and 143 eld x works very well in brother in laws Sako Carbonlight.

so you going from 6mm/08 to a 6.5mm/08 and you already own a 7.6mm/08.....
you could go the other way and make it a 5.5mm/08
or go fatter and go .357 so a ??8mm??/08???

just thinking your 260 ISNT going to be huge difference in preformance from you 08....

True Micky but once foxhound finds out just how much better the 260 is than his 308 he will sell the 308 and be far better off.

splutter splutter...nearly spilt my cuppa tea reading that......

Hodgdon superprofrmance or RL26 both will give good speeds and groups.
18" with Hodgdon superprofrmance and 143 ELDX get 2810 and 20" gets 2860

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The great thing about custom barrels is that you can fit a barrel with a fast enough twist rate for the modern projectiles. Most factory barrels are lagging well behind with slow twist barrels.

My weatherby 308 is a tack driver just is a bit heavy. The 243 barrel is about done and is a lighter shorter overall package and 260 seems the way forward in range work and the odd cull. And i want a new challenge. Will never sell they weatherby i use that plenty as well .

Thinking of 1 in 9 twist

Go 1-8 or 1-7.5

i rebarrelled a 308 to 260 rem years ago never regretted it i went 1:9 twist however 1:8.5 or 1:8 would have been better for more options in projectiles not that ive had any issue running 120gn jobs at 2800fps -3000fps except my shooting at times😳

My 260 liked AR2209, the Hornady 143 eld-x, and the Sierra Gameking 130.

Creedmore fits better in a short action with the long bullets.

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Originally Posted by Spitfire

The great thing about custom barrels is that you can fit a barrel with a fast enough twist rate for the modern projectiles. Most factory barrels are lagging well behind with slow twist barrels.

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a 6.5 has always been 1 in 8,,where did this bullshit start that you need a modern 1 in 8 when its still a 1 in bloody 8

Thanks for the input guys gives me plenty to go on. Next year its off for a re barrel and a new suppressor.

Or just go 243 or 243 ai if there's such a thing since you might be already set up for it

Yeah decisions, some how feel 260 will be more versatile had the 243 a long time and feel it was a dude barrel from the start.

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Originally Posted by 264 magic

a 6.5 has always been 1 in 8,,where did this bullshit start that you need a modern 1 in 8 when its still a 1 in bloody 8

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Feeling a bit grumpy today?

My point was a fair one and quite correct. Most factory rifles are fitted with barrels that are too slow for modern projectiles. I didn’t say a thing about a specific twist rate, but you are right that in 6.5 it’s not currently a problem. Have a nice day.

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Originally Posted by foxhound

Yeah decisions, some how feel 260 will be more versatile had the 243 a long time and feel it was a dude barrel from the start.

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I have a 243 and 308 and had a 260 until recently, they are quite different beasts in my opinion. I would put the 260 closer to the 308 end, even though in diameter it's closer to the 243.

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Originally Posted by stevodog

Creedmore fits better in a short action with the long bullets.

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@foxhound - this is a good point. Is there anything in particular pointing you towards the 260 (ie already having dies, brass etc)?

If you've only got the action and stock and want to start afresh with a 6.5mm there is a lot to recommend the Creedmoor. The designed is optimised for the long bullets available in 6.5mm by minimising the amount they intrude into the body of the case. It has minimal body taper, 30 degree shoulder and a reasonable length neck - all help to optimise performance within a 2.800 oal. There is a range of excellent brass available now ie Peterson, Lapua, ADG etc that works superbly and also lasts a very long time making it great value long term despite the purchase price.

My experience mirrors others that it is very easy to achieve accurate loads that offer a decent amount of performance with manageable recoil.

With the action you have there is scope to improve it - if you're fitting a premium barrel then why not get the gunsmith to true up the bolt face and lap the lugs in while he has it? You will very likely end up with a great performer that you will enjoy using. You could also look to get a Wyatts or similar magazine box to get approx 3" oal to really seat out those long pointy bullets to maximise capacity. The possibilities are almost endless!

Options are endless alright and if you have a .260 or a Creedmoor you won't need a
.243 or a .308.

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what id recommend is selling it as is and buying what you wanted instead

rebarreling it will cost a grand as long you keep it basic - and is a 6 week at best wait around
do you really want to spend that sort of coin on it when this far its been a dud

fair enough if you want a specific thing and its not offered factory, but otherwise you can buy a whole new rifle for the cost of the barrel

I do hear you Bill but i have changed the trigger and bedded it shortened it and just like it and it will be a project. i have a similar remington in 223 that was second hand and started to shoot crap. Re barrel with a true flight, fitted timney trigger and it shoots fantastic and so repeatable when dialing. The 243 is a bit hit and miss and i weighed up re barrel again to 243 or go bigger like 260.

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Originally Posted by foxhound

I do hear you Bill but i have changed the trigger and bedded it shortened it and just like it and it will be a project. i have a similar remington in 223 that was second hand and started to shoot crap. Re barrel with a true flight, fitted timney trigger and it shoots fantastic and so repeatable when dialing. The 243 is a bit hit and miss and i weighed up re barrel again to 243 or go bigger like 260.

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I've had a Remmy in 260, was too short in the mag to work well with the 140gr up bullets. Its already been mentioned 6.5CM is a better option with the short actions, which I agree. Bugger all difference between the two, speed wise if you are going to shorten up a 6.5 under 22".

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Originally Posted by stevodog

Creedmore fits better in a short action with the long bullets.

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Yep go with the 6.5 Creedmore much better designed cartridge than the 260 Rem very efficient and accurate, an old nearly bind friend was one in a Howa it shoots
sub .5MOA with 143 ELD-X projectiles