I'm looking at barrels to turn my 308 into a Remington 260 . I see criterion barrel for 260remington then I see kreiger barrels in 6.5mm , what's the diffence when they both shoot a 6.5mm Bullet , can I purchase a 6.5mm barrels to build a Remington 260 , or does the barrel have to be for a 260 ?
Barrel question
- Thread starter Remtac
- Start date
Barrels are made by many different manufacturers and in varying degrees of quality. Kreiger happens to be one of the finest cut rifled barrel made.
6.5mm barrels are all basically the same size but are available if different twists depending on your bullet choice. Some long (and heavy) specialty bullets require a faster twist than 'normal' to stabilize the bullet. The vast majority of .260 Remington's will work very well with a 9 twist.
6.5mm barrels are all basically the same size but are available if different twists depending on your bullet choice. Some long (and heavy) specialty bullets require a faster twist than 'normal' to stabilize the bullet. The vast majority of .260 Remington's will work very well with a 9 twist.
Chargerguy
CGN frequent flyer
I would definitely go with an 8 twist if you're planning on shooting 130/140 grain bullets.
Is the difference between the 260 Rem barrel in question and the 6.5mm blank just that the .260 Rem barrel is actually chambered for the .260 Rem, while the 6.5 would need to be chambered? Sounds like it to me.
Is the difference between the 260 Rem barrel in question and the 6.5mm blank just that the .260 Rem barrel is actually chambered for the .260 Rem, while the 6.5 would need to be chambered? Sounds like it to me.
I'd rather the 1:8 twist for 140 grain Bullets
Remtac, the 1-9 twist will stabilize 140 grain bullets quite well. I have a 260 Rem with a 1-9 twist and it is very accurate. I also have a 6.5x55 with a 1-8 twist in a strong modern action that I load to 260 Rem velocities and then some with IMR7828SSC and in all honesty I can't see any discernible difference. The 6.5-06 on a Winchester action has a 1-10 twist and it will only stabilize flat base 140 grain bullets at top velocities but it is also very accurate with the bullets it likes.
Where Guntech is coming from in his recommendation is that it was found by the bench rest crowd that the most accurate bullets were those that were just barely stabilized. Hence they used very slow twist rates in their barrels for almost every caliber. 1-15 twist rates for 30 cal is relatively standard depending on bullet length and weight. Many current made 308 Win barrels now sport 1-12 bores from commercial rifle makers. The same goes for calibers like 6mm. Many 6BR shooters use 1-14 twist rates.
The 1-9 will work fine for 99% of the jobs required of the 260Rem. If you are planning on shooting VLD or sleeker/longer bullets then you will need a 1-8 or even tighter twist rates such as those used in the M96 platform Swede rifles which was close to 1-7.5.
One other thing to consider, faster twist rates can and will increase pressures.
Where Guntech is coming from in his recommendation is that it was found by the bench rest crowd that the most accurate bullets were those that were just barely stabilized. Hence they used very slow twist rates in their barrels for almost every caliber. 1-15 twist rates for 30 cal is relatively standard depending on bullet length and weight. Many current made 308 Win barrels now sport 1-12 bores from commercial rifle makers. The same goes for calibers like 6mm. Many 6BR shooters use 1-14 twist rates.
The 1-9 will work fine for 99% of the jobs required of the 260Rem. If you are planning on shooting VLD or sleeker/longer bullets then you will need a 1-8 or even tighter twist rates such as those used in the M96 platform Swede rifles which was close to 1-7.5.
One other thing to consider, faster twist rates can and will increase pressures.
Chargerguy
CGN frequent flyer
Daily variables will affect your bullets stability and could negatively impact the ballistic coefficient. Play around with Berger's twist rate stability calculator on their site. It's a pretty neat tool.
The factory that produced the .260 Remington, produced it with a 9 twist which will handle all of the factory ammo.
As I said, "all are available if different twists depending on your bullet choice. Some long (and heavy) specialty bullets require a faster twist than 'normal' to stabilize the bullet. The vast majority of .260 Remington's will work very well with a 9 twist.
Now let's hear from the 'op' on his plans...
As I said, "all are available if different twists depending on your bullet choice. Some long (and heavy) specialty bullets require a faster twist than 'normal' to stabilize the bullet. The vast majority of .260 Remington's will work very well with a 9 twist.
Now let's hear from the 'op' on his plans...
Now you're splitting hairs.
I have owned only one Criterion Barrel. They are button rifled and lapped and they are well made and are very consistent. It seems they also use a chroming process on their chrome moly barrels. Not sure about the SS versions. Krieger is a step above in quality and they are cut rifled. Either will work wonders for your purposes.
I would suggest you fit the purpose. If you are going to create a blued hunting rifle then I would consider the criterion chrome lined barrel. If you are going f class shooting....then Krieger is top of the line. My 2c.
I would suggest you fit the purpose. If you are going to create a blued hunting rifle then I would consider the criterion chrome lined barrel. If you are going f class shooting....then Krieger is top of the line. My 2c.
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
260 is a North American name/number given to the cartridge. There are a bunch of different names using "kinda close numerical designations" for wildcat and factory chambers. It is just a name... where you want to look is a reloading manual and see the actual bullet diameter being loaded.
You are correct, the 260 Rem uses the good ole 6.5mm bullets and shot in 6.5 mm bore barrels.
From there you can look at manf, styles of rifling, type of steel and shapes/number/styles of the lands themself. Lots of great options especially from the better barrel makers.
If I can help, send me a PM or email....
Jerry
