Home Forums Hunting & Shooting Ask The Gunwriters 30-06 barrel twist, 1/9" ??

Will be sending an action to Bartlein for rebarrel. Bullets used will probably be 165 to 180 grain BT/Accubond, maybe 130/150 TTSX. Any advantage or disadvantage in going 1/9" instead of 1/10"? Seems the current trend is to go for a little more twist when available.

Also looking at their contours. I'm between the #2 Standard Sporter and #2B Medium Sporter to be finished at 23". Action is a Kimber 84L to be in classicish wood stock without a lot of extra timber. Wanting to balance a little heavy to the front, but still stay light as possible overall. Anybody actually used these contours? Thanks.

I'm ALL for extra twist, but a 1-10" is perfectly fine for the 06.

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^^^^ This ^^^^

Spot on!

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How about for the 240 grain very low drag match bullets ?

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The Sierra 240 SMK benefits with the 1-9 twist.

So the winner is 1/10" it seems for anything no longer than a 180 ballistic tip even from you 1/1 .224 guys. Thinking that'll be the route in a #2 std sporter contour with the whiz-bang 5R rifling. At 23" the #2 should be around .605/.610 at the muzzle. Ought to be plenty fat for a .30 cal. Even looked at their gain twist rifling for a second, but just for a second. Now to get the donor pulled apart and send in the action. Toughest part of all this is the long wait. You wouldn't know we're in a recession by looking at delivery times for custom barrel makers.

Hmmmm, just ran the twist question past Brian at Bartlein and he's recommending 1/11" for even the 180 to 200 BT/Accubond.

I shoot 190 Noslers into small groups through 12" twist 308's.

Berger shows 11" through their 210 grain long range and VLD bullets. I don't know how long a 200 AB is compared to those though.

10" would remove all doubt for anything I think you would shoot in a rifle such as you described.

I have a friend who did some experiments with heavy Match King bullets in the .30-'06. He found that going too heavy in the '06 was self-defeating: the hoped for gains were just not there. Heck 10" twist will stabilize 220 gr bullets, I think the 11" option is really a good one�

jim

Well, they all cost the same. I'd flip a coin but it only has 2 sides. Can't imagine a 200 AB is as long as a 210 VLD. And I hear Berger knows a little about shooting. But was certainly surprised to hear that from Bartlein. Brian there was talking about Marine target rifles being twisted so IIRC. Guess maybe as Jim says too much can be just too much. So 1/10 or 1/11 and now I'm more toward 1/11 because 165 to 180 BT's and AB's is probably what it will live on. Geez, over such things we agonize. It's enough to make a man drink Scotch over ice.

Ditto.

In choosing between the 1-10 and 1-11 I am going with the faster twist every time with a hunting rifle and hunting bullets.

[bleep] the 11 and go 10

shootem, others here have given a pretty thorough opinion of the twist.

As to your other question, I have used a Bartlein 30 cal #3, and have had chambered and sent off for more work a Bartlein 30 cal #2. The first question for the contour would be--is a CM barrel acceptable? I think Bartlein won't turn anything smaller than a 2B in Stainless for 30 cal. If you want a Bartlein, and you want either a #2 or a 2B, and you want SS, 2B is your only choice.

As to the heft of the barrel, I think a Bartlein #2 will be very acceptable. I have not held a 2B, but I thought my #3 was too heavy. I chose a #2 to pair with a wood stock also, attached to a Winchester Model 70.

FWIW, my Bartlein 30 cal barrels have been 11 twist barrels. I have not shot anything longer than 180 Accubonds, but they shoot well. The barrels normally put varying bullet weights in about the same place also.

Ahhh, there's those bashful quick twist personalities showing up. Yeah, time to man up and {bleep} that 11. I'm going 10. Maybe 10.5 As far as contour I've pretty much settled on the #2. Metal will be finished in gloss hot blue so has to be CM anyway. Joel, what cartridge you shooting in your Bartlein .30s? You using the 5R?

shootem, 30-06 for me. But just because I can't leave well enough alone, I own a reamer and it has a 0.337 neck (0.340 is SAAMI) and a 1.5 degree leade (3 degrees is SAAMI for the 30-06). I have to neck turn Lapua brass, but all other brass fits without turning.

They are 5R barrels, but after shooting 5R barrels from Bartlein and Rock and a 4-groove barrel from Brux I can't tell a difference between any of them with respect to the groove configuration.

I think you will like the #2 more than the heavier contour paired with the Kimber action. It should be a great rifle. I also put Dyna Bore Coat in the bore for rust protection, and plan on using Dyna Gun Shield outside the bluing once complete. Then the rifle should be as protected, or more, than with a SS barrel, but still have the gloss blue appearance.

yep make mine a 10 twist for sure.

1-10 is a fast twist for a 30-06 and a good case can be made for a 1-11. Read German Salazar riflemansblog

If it starts with German, it's over engineered...

A tight necked 30-06 by 0.003. And I'm worried about an inch of twist one way or another. You really are looney. Definitely Bore Coat and was figuring to try the Shield on the bottom of the barrel in the forend channel to see how it affected the blue.