Is a 8.5 twist barrel on a .260 and 6.5 x 47 Lapua fast enough to stabilize the heaviest, highest B.C. bullets in these calibers. Or does a person need a 8 twist?
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Re: 8.5 twist barrel on a .260/6.5 x 47 Lapua
I went with an 8 twist on my 260 just to be sure.
I went with an 8 twist on my 260 just to be sure.
Re: 8.5 twist barrel on a .260/6.5 x 47 Lapua
I have always used 1:8 with great results in both my 260 and 6.5 creedmoor
I have always used 1:8 with great results in both my 260 and 6.5 creedmoor
Re: 8.5 twist barrel on a .260/6.5 x 47 Lapua
I had a 6.5x55 made and wanted to go with 1:8. However, got talked into 1:8.5 twist rate. I haven't picked it up yet, hopefully on Friday I will get it. Consequently, when I did the DOJ paper work I was shown a sample target and it was .09-something. When I get the target I will post it. BTW it was only a 3 round group. Also, it was Norma 130gr HPBT that was used. I plan on using 142 gr when I get it.
Jamie
I had a 6.5x55 made and wanted to go with 1:8. However, got talked into 1:8.5 twist rate. I haven't picked it up yet, hopefully on Friday I will get it. Consequently, when I did the DOJ paper work I was shown a sample target and it was .09-something. When I get the target I will post it. BTW it was only a 3 round group. Also, it was Norma 130gr HPBT that was used. I plan on using 142 gr when I get it.
Jamie
Re: 8.5 twist barrel on a .260/6.5 x 47 Lapua
My 6.5X47 works fine with the 8.5 twist.
My 6.5X47 works fine with the 8.5 twist.
Re: 8.5 twist barrel on a .260/6.5 x 47 Lapua
1 in 8.5 works great in my 260.
I shoot 142's
1 in 8.5 works great in my 260.
I shoot 142's
Re: 8.5 twist barrel on a .260/6.5 x 47 Lapua
1-8 or 1-8.5 will work equally well, 130's to 142's no problem.
1-8 or 1-8.5 will work equally well, 130's to 142's no problem.
Re: 8.5 twist barrel on a .260/6.5 x 47 Lapua
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: wnroscoe</div><div class="ubbcode-body">1-8 or 1-8.5 will work equally well, 130's to 142's no problem. </div></div>
So, if you were going to order a barrel for a 6.5 Creedmoor (I plan to order one very soon) which would you choose. Flip a coin?
Thanks,
Joe
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: wnroscoe</div><div class="ubbcode-body">1-8 or 1-8.5 will work equally well, 130's to 142's no problem. </div></div>
So, if you were going to order a barrel for a 6.5 Creedmoor (I plan to order one very soon) which would you choose. Flip a coin?
Thanks,
Joe
Re: 8.5 twist barrel on a .260/6.5 x 47 Lapua
I went 8.5 twist, and it works great. A 1:9 will work, but is right on the edge with the 140 VLD's and 142 SMK. I don't think .5" of twist will make much difference, but I want the slowest possible twist and still work well at long range.
I went 8.5 twist, and it works great. A 1:9 will work, but is right on the edge with the 140 VLD's and 142 SMK. I don't think .5" of twist will make much difference, but I want the slowest possible twist and still work well at long range.
Re: 8.5 twist barrel on a .260/6.5 x 47 Lapua
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 427Cobra</div><div class="ubbcode-body">I'm putting a 8 twist Bartlein on my 260, but I think my next tube will be 8.5, I think the 8.5 should give a cunt hair more speed. </div></div>
Yes, I am looking at it from the same point of view as you 427. Thanks guys. Appreciate the responses.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 427Cobra</div><div class="ubbcode-body">I'm putting a 8 twist Bartlein on my 260, but I think my next tube will be 8.5, I think the 8.5 should give a cunt hair more speed. </div></div>
Yes, I am looking at it from the same point of view as you 427. Thanks guys. Appreciate the responses.
Re: 8.5 twist barrel on a .260/6.5 x 47 Lapua
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TN-MadDog</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: wnroscoe</div><div class="ubbcode-body">1-8 or 1-8.5 will work equally well, 130's to 142's no problem. </div></div>
So, if you were going to order a barrel for a 6.5 Creedmoor (I plan to order one very soon) which would you choose. Flip a coin?
Thanks,
Joe </div></div>
Either will work. Like Rob said, 1-8
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TN-MadDog</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: wnroscoe</div><div class="ubbcode-body">1-8 or 1-8.5 will work equally well, 130's to 142's no problem. </div></div>
So, if you were going to order a barrel for a 6.5 Creedmoor (I plan to order one very soon) which would you choose. Flip a coin?
Thanks,
Joe </div></div>
Either will work. Like Rob said, 1-8
