for those in the .260 know

Fenix.NZ

Fenix.NZ

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im wanting to do what im not supposed to do..

have a target and hunting rifle in 1

im going for a .260rem, heavy barrell on a weatherby action.. going to be in a manners T4 stock ..

my main questions is.. what is the minimum barrell length for the 260 to be able to retain most of its accuracy out to about 1200m ? as i still want to carry this thing occasionally

im thinking about 22" ? perhaps 20" ?
 
Fenix.NZ said:
im wanting to do what im not supposed to do..

have a target and hunting rifle in 1

im going for a .260rem, heavy barrell on a weatherby action.. going to be in a manners T4 stock ..

my main questions is.. what is the minimum barrell length for the 260 to be able to retain most of its accuracy out to about 1200m ? as i still want to carry this thing occasionally

im thinking about 22" ? perhaps 20" ?
Click to expand...

You're going the same route as I'm planning this winter... a 2-in-1 gun in .260 :D Only I'll be using a Savage 110 Long Action.
 
The barrel length will have little to do with accuracy, and plenty to do with being long enough to provide the velocity to the bullet to remain supersonic out to 1200+ yards. Which bullet do you intend to use? If you are shooting a good 139/140 grain match bullet with a BC around .585-.600, you only need a muzzle velocity of 2650 or so. That means a 20" barrel should make it. I would feel slightly more comfortable with a 22" tube, just for insurance. Regards, Eagleye.
 
Savage action wouldn't be a bad ideal for a 260rem build, I had several 260rem build on rem700, two in 25, 26" barrel and the other in 20" LTR, using H4831 comparing between the 25" to a 20" barrel with 45grain of H4831 there are no different in velocity, both are chronograph at 2620 mark. maybe with different powder will give a different result. we also try this with 308win, using Varget and BC-2.
 
GunBoy said:
Savage action wouldn't be a bad ideal for a 260rem build, I had several 260rem build on rem700, two in 25, 26" barrel and the other in 20" LTR, using H4831 comparing between the 25" to a 20" barrel with 45grain of H4831 there are no different in velocity, both are chronograph at 2620 mark. maybe with different powder will give a different result. we also try this with 308win, using Varget and BC-2.
Click to expand...

Gunboy, this is reassuring to hear, thank you, 20-22" seemed logical for what i wanted, i just wanted to make sure that i wasnt going to be losing out big time on accuracy at the other end
 
20" should get 2650 fps with a 140, that'll work just fine to 1200y if your optics will

My dual purpose 260 (23" tube) wears only a 9x :) but still works to 1000 if the target is big enough

IMG_0122-1.jpg
 
You not going to loose accuracy just by shorten the barrel, infact you will gain accuracy , the barrel will have a more stiffer profile then leaving it long, but I would go with 22" instead of 20" just to be sure, this is my 260LTR.
DSC01218.jpg

and this is my 22" 308win.
DSC01407.jpg
 
Fenix ---If you are going to shoot those long bullets, you may want to consider freebore a bit longer than standard SAAMI ... to leave a bit more boiler room... A 142 SMK seated .007 off the lands in my SAAMI freebore (I think its .118") puts the base of the bullet pretty close to the shoulder/case junction. Standard SAAMI would be friendlier to the match 120's...IMO
 
JEC said:
Fenix ---If you are going to shoot those long bullets, you may want to consider freebore a bit longer than standard SAAMI ... to leave a bit more boiler room... A 142 SMK seated .007 off the lands in my SAAMI freebore (I think its .118") puts the base of the bullet pretty close to the shoulder/case junction. Standard SAAMI would be friendlier to the match 120's...IMO
Click to expand...

english ? :D

im still learning on the reloading stuff .. this .260 build is my trial by fire so to speak
 
Fenix.NZ said:
if i said i hated you because of that .308.. would you hold it against me ? :p

that thing is milled from a solid billet of ###
Click to expand...

YET, I am pretty Offended, But if I ever win the Jackpot 649 or LottoMax, I send you the gun, it be my pleasure, how that?.

Sing
 
Fenix.NZ said:
" Originally Posted by JEC
Fenix ---If you are going to shoot those long bullets, you may want to consider freebore a bit longer than standard SAAMI ... to leave a bit more boiler room... A 142 SMK seated .007 off the lands in my SAAMI freebore (I think its .118") puts the base of the bullet pretty close to the shoulder/case junction. Standard SAAMI would be friendlier to the match 120's...IMO"



english ? :D

im still learning on the reloading stuff .. this .260 build is my trial by fire so to speak
Click to expand...

in other words , he said you may want to cut the throat in your chamber a bit longer than normal so you can seat the very long 142 grain bullets out of the case , so you have more room to add more powder .


you mention your using a weatherby action .
is it long enough to go to a longer case , like the 6.5x55 ?
or maybe a ackley improved version of the 6.5x55 .
 
burnt_servo said:
in other words , he said you may want to cut the throat in your chamber a bit longer than normal so you can seat the very long 142 grain bullets out of the case , so you have more room to add more powder .


you mention your using a weatherby action .
is it long enough to go to a longer case , like the 6.5x55 ?
or maybe a ackley improved version of the 6.5x55 .
Click to expand...

now that makes sense. and i will definately consider it.

i dont know if the action is going to be long enough. i can fit a .308 case with a 146 fmj round seated with about 5mm to spare, but in the magazine it only just fits
 
Fenix.NZ said:
now that makes sense. and i will definately consider it.

i dont know if the action is going to be long enough. i can fit a .308 case with a 146 fmj round seated with about 5mm to spare, but in the magazine it only just fits
Click to expand...

it sounds like it may still work , but you will have to have the magazine lengthened a bit .

are you installing the barrel , or having a gunsmith do it ?
if your having a smith do it , ask him what he thinks and go with that .

btw if you go with the 260 , and you cut the throat longer than normal , you will also have to have the magazine lengthened .
the 260 and 308 have the same overal length , and if a standard length 308 just fits in the mag now , the 260 won't fit the magazine , if you seat the bullet out farther to fit the longer throat .
 
burnt_servo said:
it sounds like it may still work , but you will have to have the magazine lengthened a bit .

are you installing the barrel , or having a gunsmith do it ?
if your having a smith do it , ask him what he thinks and go with that .

btw if you go with the 260 , and you cut the throat longer than normal , you will also have to have the magazine lengthened .
the 260 and 308 have the same overal length , and if a standard length 308 just fits in the mag now , the 260 won't fit the magazine , if you seat the bullet out farther to fit the longer throat .
Click to expand...

for target shooting i'll likely only load single rounds, wont be using the magazine. for hunting i wont need the long rounds so it may be alright.

and no im going to have Trueflite make and install the barrel for me
 
With which bullet, and from which barrel length? I have three 6.5 Swedes, none of them will hit 2900 safely with a 140 gr bullet. 2700-2800 is the best they will do. My 6.5-06 will go over 2900 with a 140. I've seen and used a 6.5x55 Arch (like an Ackley) that would do it. I'm curious. - dan
 
with 140grain Amax, 47.5grain H4831 from a 26" barrel, I got 2835fps at Genesee.
with this rifles.
1-8twist 26" barrel muzzle diameter .945"
IMG_4075.jpg
 
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